Identification Information
Citation:
Originator:
Publication Date: 2008
Title:
Open-File Report O-08-03:
Preliminary Geologic Map of the
Publication Information:
Publication
Place:
Publisher: Oregon Department of Geology and Mineral Industries
Description:
Abstract: This data set contains the information used to create the Preliminary Geologic Map of the Surveyor Mountain 7.5’
Quadrangle for Open-File Report O-08-03. This map is one of a series of geologic maps created for quadrangles in south-
central
The digital raster Graphic (DRG)
of the 1985 provisional edition of the U.S. Geological Survey (USGS) 7.5’
Mountain quadrangle provides the base map on top of which have been placed geospatial vector format layers of the geologic
units, unit boundaries/contacts, and faults; and point data format layers of the analyzed rock sample collection locations and
volcanic centers. The geologic units and their boundaries were determined based on a combination of observations from the
field and of hand-sample,
thin-section, and geochemical analyses of 116 samples collected from within the
USGS 7.5’ quadrangle as well as of relevant samples collected from adjacent USGS 7.5’ quadrangles. Although the chemistry
data and thin-section observations were used in creating the map, the units are meant to be field-mappable, that is, recognizable
by the study of outcrops in the field.
The various layers (geologic units, samples, etc.) of the map were digitized in MapInfo Professional v.7.0 from drawings on
paper quadrangles, UTM coordinates, or maps from student research reports. Rock samples were collected and analyzed by
x-ray fluorescence (XRF) intermittently between 1991 and 2006. Several samples were also dated using K-Ar or 40Ar/39Ar
dating methods. The major and trace elemental chemistry data and ages are made available in the samples table of this data set.
Purpose: These data were collected and compiled in order to better understand the local geology and geologic history, to create a
field-mappable
geologic map of the
Report O-08-03, and to make available the collected chemical and age information that may be useful in various forms of study
of this volcanic region. The map is intended for a diverse audience with varying amounts of geologic understanding. This is one
of a series of geologic maps of
USGS 7.5’ quadrangles in the south-central region of
Department of Geology and Mineral Industries.
Supplemental Information: There are several different files and file formats in this data set. The geologic units table, unit boundaries/
contacts table, samples table, faults table, and volcanic centers table were created in MapInfo Professional version 7.0 and the
.TAB files can be opened using MapInfo software. These data were later translated to ESRI compatible file formats using the
MapInfo Universal Translator extension. These translated files were then arranged and setup to properly display the data when
opened in the ESRI ArcMap software.
There is a MapInfo workspace (.WOR) file that opens the georeferenced USGS Surveyor Mountain 7.5’ quadrangle raster
image and the other
ArcMap file (.MXD) which contains the georeferenced USGS Surveyor Mountain 7.5’ quadrangle and the geologic units, unit
boundaries, samples, faults, and volcanic centers shapefiles and accompanying attribute tables (SurveyorMountain.MXD).
Time Period of Content:
Multiple Dates/Times:
Calendar Date: 1991, 1994, 1995, 1997, 1998, 1999, 2003, 2004, 2006, 2008
Currentness Reference: ground condition and 2008 is the publication date
Status:
Progress: Complete
Maintenance and Update Frequency: Unknown
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -122.25
East Bounding Coordinate: -122.125
North Bounding Coordinate: 42.25
South Bounding Coordinate: 42.125
Keywords:
Theme:
Theme Keyword Thesaurus: none
Theme Keyword: geologic map
Theme Keyword: map of surface geology
Theme Keyword: surface geology
Theme Keyword: volcanoes
Theme
Keyword:
Theme Keyword: volcanic flows
Theme Keyword: lava flows
Theme Keyword: units
Theme Keyword: formations
Theme Keyword: formation boundary
Theme Keyword: contact
Theme Keyword: samples
Theme Keyword: rock samples
Theme Keyword: geochemistry
Theme Keyword: chemistry
Theme Keyword: age-dated
Theme Keyword: volcanic center
Theme Keyword: fault
Theme Keyword: geospatial vector format
Theme Keyword: digital raster graphic
Theme Keyword: drg
Theme Keyword: topographic map
Theme Keyword: topographic quadrangle
Theme Keyword: USGS quadrangle
Theme Keyword: Open-File Report
Theme Keyword: Open-File Report 08-03
Place:
Place Keyword Thesaurus: none
Place
Keyword:
Place
Keyword: south-central
Place
Keyword:
Place
Keyword:
Place
Keyword:
Place
Keyword:
Place Keyword:
Place
Keyword:
Place Keyword: Sheepy Creek
Place Keyword: Lower Sheepy Reservoir
Place Keyword: Sheepy Reservoir
Place Keyword: Puckett Glade
Place Keyword: Parker Reservoir
Place
Keyword: Grouse
Place
Keyword:
Place Keyword: Summit Rock Point
Place
Keyword:
Place
Keyword:
Place Keyword: Cold Creek
Place
Keyword:
Place Keyword: Johnson Creek
Place
Keyword:
Place Keyword: Cascades
Place
Keyword:
Place Keyword: High Cascade volcanoes
Place
Keyword:
Stratum:
Stratum Keyword Thesaurus: none
Stratum Keyword: surface
Stratum Keyword: surface geology
Stratum Keyword: surficial
Stratum Keyword: surficial formations
Stratum Keyword: surface formations
Stratum Keyword: upper strata
Stratum Keyword: surface strata
Stratum Keyword: volcanic strata
Stratum Keyword: volcanic
Stratum Keyword: surficial volcanic deposits
Stratum Keyword: lava flows
Stratum Keyword: surficial lava flow
Stratum Keyword: Quaternary sediments
Temporal:
Temporal Keyword Thesaurus: none
Temporal Keyword: 5.8 Ma
Temporal Keyword: 5.8 million years
Temporal Keyword: present
Temporal Keyword: 5.8 million years ago to the present
Temporal Keyword: late Cenozoic
Temporal Keyword: upper Cenozoic
Temporal Keyword: Quaternary
Temporal Keyword: 11.608 Ma
Temporal Keyword: 11.608 million years
Temporal Keyword: Less than 11.608 million years
Temporal Keyword: 11.608 million years ago to the present
Temporal Keyword: Upper Miocene to Holocene
Temporal Keyword: Miocene to Holocene
Temporal Keyword: Late Miocene to Holocene
Temporal Keyword: Miocene
Temporal Keyword: Pliocene
Temporal Keyword: Tertiary
Temporal Keyword: Neogene
Temporal Keyword: Pleistocene
Temporal Keyword: Holocene
Access Constraints: none
Use Constraints: Acknowledgement of the authors and the Oregon Department of Geology and Mineral Industries would be appreciated in
products derived from these data.
Point of Contact:
Contact
Person Primary:
Contact Address:
Address Type: mailing and physical address
Address:
City:
State or
Province:
Postal Code: 17604
Contact Voice Telephone: 1-717-291-3818
Contact Electronic Mail Address: stan.mertzman@fandm.edu
Contact Instructions: contact via electronic mail is preferred
Browse Graphic:
Browse Graphic File Name: O-08-03Map30x36.pdf
Browse Graphic File Description: The O-08-03Map30x36.pdf file contains the Preliminary Geologic Map of the Surveyor
Mountain 7.5’
Quadrangle,
provided in this data set. The basic image in this map (the 1985 USGS Surveyor Mountain 7.5’ quadrangle overlain by the
formations, formation boundaries/contacts, sample symbols, and the faults) was created in MapInfo Professional version 7.0
using the data available in this data set (SurveyorMtnQuadforTransparent.TAB, SurveyorMountainUnits.TAB,
SurveyorMountainUnitBounds.TAB, SurveyorMountainFaults.TAB, and SurveyorMountainSamples.TAB). This image was
exported from MapInfo Professional v. 7.0 as a Photoshop Document (.PSD) at a zoom of 1 inch = 1.4 miles, a window size
of 7.99 miles (in the export options, the actual window size was doubled from 5.72 inches to 11.44 inches), and with a
resolution of 600 pixels per inch. The colors of the resulting .PSD file were adjusted in Adobe Photoshop CS3 to match
USGS CMYK color standards. The image was then opened in Adobe Illustrator CS3 where its size was increased by
184.7999% to make the map scale 1:24,000. The scale was then checked manually within Adobe Illustrator CS3 and adjusted
if necessary. The samples’ map numbers, the formation labels, and the rest of what is seen on the map, such as the time rock
chart and the legend, were added to the map in Adobe Illustrator CS3. The resulting 30 inch x 36 inch Adobe Illustrator image
was saved as a Portable Document Format (.PDF) file and the result is the image of the geologic map seen in the file
O-08-03Map30x36.pdf.
Browse Graphic File Type: PDF
Native Data Set Environment: The majority of the data files in the data set used to make the Preliminary Geologic Map of the Surveyor
Mountain 7.5’
Quadrangle,
software version 7.0 running under a Microsoft Windows 2000 Professional operating system. The data that were digitized in this
environment were the geologic units, the unit boundaries, the sample locations, the faults, and the volcanic centers layers. These files
were modified using MapInfo Professional software version 7.0 running under a Microsoft Windows XP Professional version 2002
Service Pack 2
operating system. The USGS 7.5’
external source
(the
produced in a different environment. However, in order to make a version of this USGS quadrangle drg that would make its white and
green areas transparent (so that the map could overlay the formations layer and the formations could show through) the digital USGS
quadrangle drg was modified from the state in which it was originally obtained. This modification was done using Adobe Photoshop
version 5 and the resulting image of the quadrangle was manually georeferenced in MapInfo Professional version 7.0. The data were at
times accessed and modified in MapInfo Professional version 7.0 running under a Microsoft XP operating system. The data from the
in Microsoft Excel for addition or modification of certain attributes, particularly chemistry data. The Microsoft Excel file was then
reopened in MapInfo Professional version 7.0. The files of this data set have been saved and backed-up on various hard drives at
various times. The
most up-to-date MapInfo Professional formatted files (
total size of 64.8 MB.
After the data set had been produced in MapInfo Professional version 7.0, the files were converted using MapInfo’s Universal
Translator extension to produce files that could be opened with ESRI ArcMap software version 9.2. This was done by converting the
MapInfo TAB files into ESRI SHP format files. The USGS quadrangle drg was reopened and georeferenced anew within ESRI
ArcMap. Further modification of the data files occurred within ESRI ArcMap, such as adjustment of attribute names in the attribute
table, adjustment of symbol shapes and colors, and setting of the formation regions’ colors to make these features similar to how they
appear in the MapInfo Files and on the Open-File Report geologic maps. The ESRI-formatted files (MXD, DBF, PRJ, SBN, SBX,
SHP, SHX, AUX, RRD, TFW, TIF, TFWX, and XML) have a total size of 116 MB.
Data Quality Information
Attribute Accuracy:
Attribute Accuracy Report: The attribute accuracy was tested in several ways. For sample, unit boundary, and volcanic center location
attributes (UTM coordinates), accuracy was assessed by comparison of on-screen representations of the location (digital maps
on the computer screen) to hard copy versions (hand-drawn or similarly-demarcated locations and boundaries on top of paper
USGS quadrangles). On several occasions, the digitized versions of the Surveyor Mountain 7.5’ quadrangle were printed out
on paper with the symbol locations and formation/unit boundaries demarcated. The print-out was then assessed by the chief
geologist of the project, Stanley A. Mertzman.
The UTM coordinates of the samples provided in the attribute table have a precision that does not reflect that with which their
locations on the map were determined. The precision reflects the values that were assigned using MapInfo Professional version
7.0’s Coordinate Extractor extension after manual placement (digitization) of the sample locations on the drg of the USGS 7.5’
some cases, based on previously-rounded (to the nearest 10 m) UTM coordinates for samples not shown on the original paper
map(s). The accuracy of the locations drawn on the original paper maps may vary. Prior to the year 2000, sampling locations
were originally determined by use of a Brunton compass in the field and these data were later translated to the 1:24,000 USGS
7.5’ quadrangles using plastic overlay cards marked with 1:24000 scale UTM coordinate grids or tick marks at relevant,
repeated intervals. After the year 2000, Magellan GPS units were used in the field to determine a sample’s collection location,
and again these coordinates were placed on the 1:24,000 scale USGS quadrangles using the appropriate plastic overlay card
with UTM units.
The Public Land Survey System
(PLSS) attributes (¼ of ¼ Section, ¼ Section, Section, Township, and Range) in
the
Mountain samples table were created in a manner so as to be as accurate as possible, but have not been tested for accuracy
beyond the checks that occurred during their production. The Township and Range attribute values were assigned by selection
of all samples that occurred within either manually created or downloaded polygons of the Township and Range boundaries.
Samples near a Township or Range grid line were more carefully studied on the screen to check that the sample really did lie
within the supposed Township. The Section attribute was assigned based on a sample’s location in relation to the PLSS section
grid as represented on the drg of
the
demarcated by dashed red lines with the section numbers in their centers (where possible)).
The ¼ of ¼ Section and ¼ Section attributes were assigned for each sample based on downloaded grids
(http://www.geocommunicator.gov/GeoComm/lsis_home/home/index.shtm) which displayed the boundaries of the ¼ of ¼
Sections and ¼ Sections of Townships. Because the Section and Township boundaries did not always line up perfectly with
those of the underlying quadrangle DRG, at times attributes of samples close to lines in this grid had to be assigned based on
mental adjustments or at times, the use of a ruler held up to the screen, by a technician. For this reason, the accuracy of the ¼
of ¼ Section and ¼ Section attributes may be questionable in some cases, particularly in those samples which lie close to the
boundaries which demarcate these location
descriptors.
The accuracy of a sample’s Unit attribute was tested by a visual check of the sample’s location in relation to the unit boundaries
as displayed in MapInfo Professional version 7.0 and by analysis of the chemical data.
The accuracy of the chemical data is dependent on many factors not discussed here. The samples were analyzed by x-ray
fluorescence (XRF) at various times and possibly by different machines. All that will be said is that the accuracy of the XRF
chemical data is monitored and assessed during the measurement procedure by using an instrument monitor (to account for
local climate and machine conditions on the day of measurement), by running several well-measured standards in every batch,
and by analyzing the totals counts. That the chemical attributes of each sample in the data table match the originally assigned
data from the XRF instrument was insured by copying the data from the original Excel data files that contained the chemistry
information provided by the XRF spectrometer and pasting it into an Excel spreadsheet which eventually became the attribute
table of the SurveyorMountainSamples.TAB MapInfo table. All of the chemical data were derived from these original Excel
files, except for those of several of the age-dated samples, which may have values copied from a previous publication by
comparison of the digital data to the data printed in the publication. In cases where there were differences between the values in
the original XRF results and those in the 2000 publication (Mertzman, 2000), the values in the data table were changed to
match those of the 2000 publication.
The colors of the units are consistent between adjacent quadrangles mapped in this project and were created as the RGB (only
color mode allowed in MapInfo Professional version 7.0) equivalents of standard USGS CMYK colors.
Logical Consistency Report: The
boundaries of the
checked for self- intersections, overlaps, and gaps using MapInfo Professional version 7.0 and no self-intersections, overlaps, or gap
problems were detected. The edges of unit polygons have also been checked against those mapped in adjacent USGS 7.5’
quadrangles as part of this project, but available in other data sets (Lake of the Woods South to the north (OFR O-07-13 (Mertzman
et al., 2007)), Little Chinquapin to the west (unpublished as of 01/31/08, but will be OFR O-08-04 (Mertzman et al. 2008), and Mule
Hill to the south
(unpublished as of 01/31/08), and
boundaries were found to fit and all of the points at the quadrangle corners were found to align perfectly (including those of units in the
southwest
(unpublished as of 01/31/08), the Chicken Hills quadrangle to the southeast
(unpublished as of 01/31/08), and the
were drawn in a separate layer on top of the formations/units layer using the trace function that is available in the MapInfo Professional
version 7.0 software.
There is one pair of samples with
duplicate coordinates in the
to the collection of more than one sample from the same location or possibly from multiple XRF analyses of different parts of the same
sample.
Completeness Report: All field-mappable units (and thus unit
boundaries) in the USGS 7.5’
mapped. At least one sample (not necessarily within the USGS Surveyor Mountain 7.5’ quadrangle) from each unit present in the
quadrangle, except for the Basaltic Andesite of Puckett Glade (Tpbap) and Alluvium (Qal) units, has been age-dated. All known faults
and volcanic
centers within the
included in this data set. All samples known to have been collected within this quadrangle and analyzed by x-ray fluorescence (XRF) by
Professor Stanley A. Mertzman or a lab technician have been mapped and are included within this data set. All chemistry results from
the XRF analyses have been included in the attribute table of the samples data file (SurveyorMountainSamples). All map numbers,
sample numbers, ages (applicable only to dated samples) in millions of years (Ma), Public Land Survey System (PLSS: ¼ of ¼ Section,
¼ Section,
Section, Township, and Range according to the
Datum of 1927: Zone 10), unit membership, and lithology (based on the total alkalis versus silica (TAS) classification method for
volcanic rocks described by Le Maitre (2002)) have been included in the attribute table of the samples data file. The unit’s symbol,
name, geologic
time scale age, and radiometrically-determined age(s) are the attributes of the
(SurveyorMountainUnits). The attributes of the faults table indicate whether the fault’s location is approximate or concealed and inferred
(Appr_or_Conc); describe what kind of fault it is (Type_of_Fault); and indicate the relative direction of the hanging-wall / down-
dropped block to the fault (Notes). The attributes of the volcanic centers table provide their UTM Easting and Northing locations
(UTM_E_m and UTM_N_m) as determined using the Coordinate Extractor extension in MapInfo Professional v. 7.0 (NAD 27: Zone
10). As with the sample location coordinates, the precision of the UTM coordinates of the volcanic centers is greater than that with
which the locations were assigned due to the precision of the results the Coordinate Extractor produces.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: The horizontal positional accuracy of the digitized data with regard to the original paper
maps has been checked by visual comparison of the digitized sample locations, formation boundaries, and volcanic
centers to the original paper maps when possible. The positional accuracy of the original sample locations on the original
paper maps may vary depending on the location-determining methods used as discussed above (Brunton compass or
Magellan GPS after the year 2000). The positions of the unit boundaries are approximate and their accuracy has not
necessarily been field tested. Analysis of the collected samples (chemistry, hand-sample, and thin sections) and
familiarity with the area from lots of time spent in the field by experienced geologists ought to ensure reasonable
accuracy of the mapped unit boundaries, although this is not quantifiable.
Lineage:
Source Information:
Source Citation:
Originator:
Publication Date: 1985
Title:
Edition: Provisional Edition 1985
Geospatial Data Presentation Form: map and raster digital data (digital raster graphic (drg)) of map
Series Information:
Series Name:
Series Issue:
Publication Information:
Publication
Place:
Publisher:
Other Citation Details: A drg of this map can be downloaded from the
Online
Linkage: UO Libraries website: http://libweb.uoregon.edu/dc/24k_lookup/displaymap.php?ohio_code=42122b2
Source Scale Denominator: 24,000
Type of Source Media: Paper and Online
Source Time Period of Content:
Time Period Information:
Multiple Dates/Times:
Calendar Dates: 1980, 1981, 1985
Source Currentness Reference: 1980 corresponds to the year in which aerial photographs were taken; the map was
field checked in 1981; and the map was edited and published in 1985. The year of production of the particular
drg used in the data set is not currently known.
Source Citation Abbreviation: 42122b2
Source Contribution: The USGS Surveyor Mountain 7.5 minute paper quadrangle was used as the base map on which
the geology of the quadrangle was mapped by Stanley A. Mertzman, his colleagues, and students (the exact
version(s) of the map(s) used as the original base maps is not currently known). A downloaded drg of the
Surveyor Mountain 7.5 minute quadrangle (42122b2) was used as the base map for this data set onto which
the sample locations, units, some of the faults, and volcanic centers were copied (digitized) from a paper version
(or versions) of the map(s) produced by the geologists involved in this project. It is also possible that the sample
collection locations came from UTM coordinates provided in a report by one of the geologists. Some of the
faults’ locations were inferred based on the topography and the location of faults on adjacent quadrangles and
they were created in MapInfo on top of the Surveyor Mountain 7.5’ quadrangle drg without copying from a
paper version of the quadrangle.
Process Step:
Process Description: The first step in the production of this data set was the collection of rock samples and observations from
the field. The samples’ chemistries were determined by x-ray fluorescence (XRF) spectroscopy (see
http://fandm.edu/x7985.xml for an overview of the XRF spectroscopy preparation and analysis procedure). The hand-
samples were carefully analyzed and described. Thin sections of the rocks allowed further description of certain samples
by analysis with a petrographic microscope.
A sample’s collection location was determined in the field using a Brunton compass prior to 2000, and with a Magellan
GPS unit after 2000. The sample
locations were marked on paper versions of the USGS 7.5’
quadrangle. These locations were digitized using a georeferenced (to the North American Datum of 1927 (NAD 27)
zone 10 horizontal datum) drg of the quadrangle in MapInfo Professional version 7.0 by placing a point (node) in a layer
above the drg at the location identical to the sample’s location on the paper map. If a sample was not present on a map,
but the UTM coordinates of its collection location were known, these coordinate values were used to plot the sample’s
collection location in MapInfo.
This process was the first step in the production of the
(SurveyorMountainSamples); it produced point data from which the UTM coordinates, if not already known, could be
extracted to the attribute table. Please note that the precision of the UTM coordinates does not necessarily reflect the
precision with which they were originally obtained, but represents the precision obtained when extracting the
coordinates of the points (with MapInfo Professional version 7.0’s coordinate extractor tool) after they were digitized
from the paper maps.
The SurveyorMountainSamples attribute table was exported at least one time to Microsoft Excel, where other sample
attributes were added and or modified (such as lithology and chemistry data). These Excel spreadsheets were then
imported back into MapInfo Professional version 7.0 and the previously extracted UTM coordinates were used to re-
plot the sample locations over the 7.5’ quadrangle drg. The drg of the quadrangle was also used in assigning some of
the Township, Range, and Section attributes to the samples. Downloaded PLSS grids also aided in assigning these and
other PLSS attributes (¼ of ¼ section, ¼ section) to the samples table.
The combination of the analyses of collected samples and a familiarity with the area from a lot of time spent in the field
allowed Stanley A. Mertzman to
determine and discriminate between the units present within the
7.5’ quadrangle and to draw the approximate locations of their boundaries on the paper USGS 7.5’ topographic maps.
These boundaries were then digitized in the same manner as sample locations, by copying their locations from on the
paper map to a MapInfo layer on
top of a drg of the same map (USGS 7.5’
(42122b12)). This was done using the polygon tool in MapInfo Professional version 7.0. The boundary of the unit on
the map (contact) (SurveyorMountainUnitBounds MapInfo Table) was digitized as the boundary of the polygon in
MapInfo. The unit polygons were colored based on RGB equivalents of standard USGS CMYK colors. The unit ages,
names, and symbols (abbreviated names) were added to the attribute table at a later stage of the process. It was
decided that a separate layer (file) should be made for the unit boundaries (contacts) within the quadrangle because the
edges of the unit polygons did not necessarily correspond to the actual unit boundaries. The edges of the unit polygons
were limited by the quadrangle boundaries, so although many units extend beyond the boundaries of the Surveyor
Mountain USGS 7.5’ quadrangle, the polygons for this data set were limited to the area of the quadrangle.
In order to make a layer (SurveyorMountainUnitBounds) that corresponded to the actual unit boundaries (ground-
surface contacts between two rock units), the true unit boundaries (not those cut off at the quadrangle’s edges) were
made by tracing (using MapInfo’s trace function) all of the unit polygons’ edges, except those that corresponded with
the 4 sides of the quadrangle. This process created the polylines that now represent the unit boundaries/contacts in this
data set (SurveyorMountainUnitBoundaries).
The volcanic centers’ locations were originally determined from field observations and sample analyses. Their locations
were marked on a paper version of the quadrangle with temporary stickers and then digitized by copying the location to
the identical spot on the drg of the quadrangle. The UTM coordinates of these locations have been extracted into the
volcanic centers attribute table using MapInfo version 7.0’s Coordinate Extractor tool. Please note that, like the
precision of the samples' UTM coordinates, the precision of the volcanic centers UTM coordinates does not reflect that
with which the location was determined, but is the result of using MapInfo v. 7.0's Coordinate Extractor Extension that
outputs the data in a certain format.
The faults’ locations were primarily determined based on field observations, but in certain locations were inferred based
on the local topography and geology combined with the consideration of the location of faults that went to the edges of
adjacent 7.5 minute USGS quadrangles.
After the creation of final forms of all of the necessary files in MapInfo, the MapInfo Universal Translator Extension was
used to convert the MapInfo-formatted data set to ESRI-format files. This involved converting the mapinfo TAB files of
the unit polygons, unit boundary (contact) polylines, sample points, fault polylines, and volcanic center points to
shapefiles (SHPs). These files were opened and adjusted in ESRI ArcMap version 9.2. It should be noted that two
additional fields (attributes) were created when the MapInfo TAB files were converted to ESRI-format files. These two
fields are the “FID” and the “Shape*.” The “FID” numbers all of the objects in the data tables and the “Shape*”
attribute tells what kind of data an object is (multipoint, polyline, polygon). These added fields are not discussed with
the rest of the attributes below. It should also be noted that certain attribute names of the ESRI-format files were
changed by the program during their creation and were not able to be modified by the technician. In such cases, the alias
of the attribute was changed to fit the original attribute titles (as shown below), but the names had to be left as they were
converted.
The digital versions of the sample collection locations; units and unit boundaries; and the volcanic centers locations were
checked by visual comparison of the digital data on the computer screen (in MapInfo) or on printed copies to the
original source paper maps. Furthermore, final printed or digital (PDF) versions of the resulting maps were assessed by
the chief geologist of this project, Stanley A. Mertzman.
Source Used Citation Abbreviation: 42122b2
Process Date: 2008
Process Contact:
Contact Information:
Contact Person Primary:
Contact Person: Isaac Weaver
Contact Position: Research Assistant
Contact Address:
Address Type: mailing and physical address
Address: Isaac Weaver,
City:
State or
Province:
Postal Code: 17604
Contact Voice Telephone: Unavailable
Contact Electronic Mail Address: isaacweaver@hotmail.com
Indirect Spatial Reference: This data set contains the drg of the USGS
7.5’
which rock samples were collected from outcrops, polygons of the geologic units, polylines of the unit boundaries (contacts), polylines
of faults, and
point data volcanic center locations for the U.S. Geological Survey 7.5 minute
Direct Spatial Reference Method: Point, Vector, and Raster
Horizontal Coordinate System Definition:
Planar:
Grid Coordinate System:
Grid Coordinate System Name: Universal Transverse Mercator
Universal Transverse Mercator:
UTM Zone Number: 10
Transverse Mercator:
Scale
Factor at
Longitude
of
Latitude of Projection Origin: 0.000000
False Easting: 500000.000000
False Northing: 0.000000
Planar Coordinate Information:
Planar Coordinate Encoding Method: coordinate pair
Coordinate Representaion:
Abscissa Resolution: 0.01
Ordinate Resolution: 0.01
Planar Distance Units: meters
Geodetic Model:
Horizontal Datum Name: North American Datum of 1927
Ellipsoid Name: Clarke 1866
Semi-major Axis: 6378206.4
Denominator of Flattening Ratio: 294.9787
Detailed Description:
Entity Type:
Entity Type Label: Unit
Entity Type Definition: A rock unit (or just unit), with regard to this data set, is a body of rock with a limited range of
lithological characteristics (as determined by analyses of outcrops and samples in the field and in the laboratory) that can
be distinguished from other bodies of rocks by observations made in the field (such as analysis of outcrops or hand-
samples collected from them). That is to say, a unit is field-mappable according to the definition used in the creation of
this data set. Nevertheless, the chemistry data and other observations not possible in the field were still considered in
determining and discriminating the units. In the Surveyor Mountain 7.5’ quadrangle, a unit may represent one or more
volcanic flows, vent deposits, or quaternary alluvium. A unit has an age (or age-range), which has been determined by
radiometric dating of collected samples (except for the Basaltic Andesite of Puckett Glade (Tpbap) and Quaternary
alluvium (Qal)). It should be noted that the vent deposit units (Tbv) may all display similar macroscopic lithologies, but
are perhaps best described as sub-units of the units in which they are found. Therefore, samples collected from these
deposits are considered a part of the unit in which the vent deposits are found.
Detailed descriptions of the units
found within the USGS 7.5’
File Report O-08-03 (Mertzman et al. (2008)). In this data set, the units are colored polygons with their edges placed
at the approximate locations of the contacts, except when limited by the quadrangle boundaries.
Entity
Type Definition Source: See Mertzman et al. (2008) for detailed descriptions of
the units found within the
Mountain quadrangle.
Attribute:
Attribute Label: Symbol
Attribute Definition: The symbol is a form of shorthand text, specific to a unit, that is created by combining age and lithology
information with an abbreviated form of the unit’s name. The symbol attribute is meant to be displayed on the pdf
versions of the geologic map to save space while identifying the unit, or it can be displayed when viewing the data in
MapInfo or ArcMap on a computer. It is intended that the symbol convey age, lithology, and unit name information.
The first letter is capitalized and represents the period-age of the formation (T=Tertiary and Q=Quaternary). If the first
letter of the symbol is a capital T, then the second letter represents the epoch-age of the formation (p=Pliocene and
m=Miocene). It should be noted that these first two letters only represent the oldest dated age of the formation.
Therefore, a unit’s age may span from period to period or epoch to epoch, but this cannot be discerned from the
symbol. The remaining letters in the symbol indicate the lithology of the formation and its name. The lithology (for
volcanic units, b=basalt, ba= basaltic andesite, and a=andesite) comes first after the age information in the abbreviation
of the unit’s name, which is usually based on an outstanding geographic or topographic feature present in the area of the
unit. The vent deposits and the Quaternary sedimentary units do not follow this pattern, are treated more generally, and
only have the age information followed by a general lithology abbreviation because these units and sub-units (vent
deposits) do not have specific names based on a geographic feature.
Attribute Definition Source: None
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: Qal
Enumerated Domain Value Definition: Alluvium (Holocene).
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tbv
Enumerated Domain Value Definition: Basaltic to basaltic andesite vent deposits (Pliocene). This unit should be
considered a sub-unit of the unit in which it is found. Tbv is present in several different units. The Tbv
found in one unit may appear very similar to the Tbv in another unit in terms of macroscopic lithological
properties, but they differ chemically and/or their more slowly cooled equivalents (the lava that flowed
from the vent and solidified as the surrounding unit) have different lithologies.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Qbbb
Enumerated
Domain Value Definition: Basalt of
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Qbbp
Enumerated
Domain Value Definition: Basalt of
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Qbbl
Enumerated
Domain Value Definition: Basalt of
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tpbas
Enumerated
Domain Value Definition: Basaltic
Andesite of
Pleistocene).
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tpbcl
Enumerated
Domain Value Definition: Basalt of
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tpbtc
Enumerated Domain Value Definition: Basalt of Tunnel Creek (Upper Pliocene).
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tpbapm
Enumerated
Domain Value Definition: Basaltic
Andesite of
Pleistocene).
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tpbsc
Enumerated Domain Value Definition: Basalt of Sheepy Creek (Middle to Upper Pliocene).
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tpbab
Enumerated
Domain Value Definition: Basaltic
Andesite of
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tpbak
Enumerated
Domain Value Definition: Basaltic
Andesite of
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tpbap
Enumerated Domain Value Definition: Basaltic Andesite of Puckett Glade (Middle Pliocene?).
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tpbac
Enumerated Domain Value Definition: Basaltic Andesite of Camp Creek (Lower to Middle Pliocene).
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tpbgb
Enumerated
Domain Value Definition: Basalt of
Grouse
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Tmaob
Enumerated Domain Value Definition: Andesite of Old Baldy East (Upper Miocene).
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Attribute:
Attribute Label: Name
Attribute Definition: The Name attribute represents the name of the unit of which the entity is a part. The name combines
information on the lithology of the unit with a geographic feature located within or near the unit’s boundary, such as a
mountain or a body of water. Detailed descriptions of the units found within the Surveyor Mountain USGS 7.5’
quadrangle are available in Open-File Report O-08-03 (Mertzman et al. (2008)).
Attribute Definition Source: See Mertzman et al. (2008)
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: Alluvium
Enumerated Domain Value Definition: Unconsolidated sediment found in close proximity to modern drainages.
Holocene in age.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Basaltic to basaltic andesite vent deposits
Enumerated Domain Value Definition: Poorly lithified to unconsolidated lapilli to ash-sized cinders black to
brown to red in color with lesser amounts of similarly colored lava spatter, bombs, and scoria. These
deposits mark volcanic vents areas that are often cinder cones. Pliocene in age. These areas should be
considered sub-units of the units in which they are found and samples found within areas of basaltic to
basaltic andesite vent deposits are classified as part of the complimentary unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated
Domain Value: Basalt of
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated
Domain Value: Basalt of
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated
Domain Value: Basalt of
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated
Domain Value: Basaltic Andesite of
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated
Domain Value: Basalt of
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Basalt of Tunnel Creek
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated
Domain Value: Basaltic Andesite of
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Basalt of Sheepy Creek
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated
Domain Value: Basaltic Andesite of
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated
Domain Value: Basaltic Andesite of
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Basaltic Andesite of Puckett Glade
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Basaltic Andesite of Camp Creek
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated
Domain Value: Basalt of Grouse
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Enumerated Domain:
Enumerated Domain Value: Andesite of Old Baldy East
Enumerated Domain Value Definition: See Mertzman et al. (2008) for a detailed description of this unit.
Enumerated Domain Value Definition Source: Open-File Report O-08-03 (Mertzman et al. (2008)).
Attribute:
Attribute Label: Age_Geologic_Time_Scale
Attribute Definition: The Age_Geologic_Time_Scale represents the age of a unit in terms of the “Stage Age” (convention not
completely followed, only Lower, Middle, and Upper are used as classes in this naming category) and “Series Epoch”
classifiers of the 2007 International Stratigraphic Chart (International Commission on Stratigraphy, 2007) as defined by
dates calculated by Gradstein et al. (2004). The attribute value was determined by a comparison of a unit’s dated
age(s) to the stratigraphic age boundaries in the 2007 International Stratigraphic Chart (International Commission on
Stratigraphy, 2007). A range of geologic time scale ages may be provided for a unit due to a range of ages calculated
for one or more samples therein by K-Ar or 40Ar/39Ar dating methods. This attribute provides a low resolution
representation of the age of a unit.
Attribute Definition Source: See Mertzman et al. (2008), International Convention on Stratigraphy (2007), and Gradstein et al.
(2004)
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: Holocene
Enumerated Domain Value Definition: < 0.0115 million years ago (Ma)
Enumerated Domain Value Definition Source: Gradstein et al. (2004), International Convention on Stratigraphy
(2007), and Mertzman et al.(2008)
Enumerated Domain:
Enumerated Domain Value: Pliocene
Enumerated Domain Value Definition: 5.332 – 1.806 million years ago (Ma)
Enumerated Domain Value Definition Source: Gradstein et al. (2004), International Convention on Stratigraphy
(2007), and Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Lower Pleistocene
Enumerated Domain Value Definition: 1.806 – 0.781 million years ago (Ma)
Enumerated Domain Value Definition Source: Gradstein et al. (2004), International Convention on Stratigraphy
(2007), and Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Middle Pleistocene
Enumerated Domain Value Definition: 0.781 – 0.126 million years ago (Ma)
Enumerated Domain Value Definition Source: Gradstein et al. (2004), International Convention on Stratigraphy
(2007), and Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Upper Pliocene
Enumerated Domain Value Definition: 2.588 – 1.806 million years ago (Ma)
Enumerated Domain Value Definition Source: Gradstein et al. (2004), International Convention on Stratigraphy
(2007), and Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Middle Pliocene
Enumerated Domain Value Definition: 3.600 – 2.588 million years ago (Ma). It should be noted that the
Basaltic Andesite of Puckett Glade (Tpbap) has the value “Middle Pliocene?” for the
“Age_Geologic_Time_Scale” attribute. There is a question mark present because this unit has not been
age-dated and therefore the estimation of its age has been determined based on field observations and
taking into account the ages of surrounding units.
Enumerated Domain Value Definition Source: Gradstein et al. (2004), International Convention on Stratigraphy
(2007), and Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Lower Pliocene
Enumerated Domain Value Definition: 5.332 – 3.600 million years ago (Ma)
Enumerated Domain Value Definition Source: Gradstein et al. (2004), International Convention on Stratigraphy
(2007), and Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Upper Miocene
Enumerated Domain Value Definition: 11.608 – 5.332 Million years ago (Ma)
Enumerated Domain Value Definition Source: Gradstein et al. (2004), International Convention on Stratigraphy
(2007), and Mertzman et al. (2008)
Attribute:
Attribute Label: Age_Ma
Attribute Definition: The Age_Ma attribute describes the absolute age or age-range of a unit in millions of years as determined
by the dating of collected rock samples with K-Ar or 40Ar/39Ar methods. The values are presented with the calculated
ages and their error ranges. All units have been age-dated using either of the two aforementioned radiometric dating
methods, except for the Tpbap (Basaltic Andesite of Puckett Glade) and Qal (Alluvium) units. The Range domain
described below pertains to the radiometrically dated samples. The value for the Qal unit is “unknown Holocene
(<0.0115 Ma).” The Tbv units (sub-units) are tentatively given the age of the units of which they are considered part
since the age-dated samples did not come from these areas; therefore, a question mark is displayed with the Tbv areas’
age values to imply their tentative nature. The Tpbap unit is given a range of ages (“3.0 Ma < Tpbap < 3.5 Ma ?”)
based on the age estimated by the project’s chief geologist
Stanley Mertzman based on field observations and the age constraints of the surrounding age-dated units.
Attribute Definition Source: See Mertzman et al. (2008)
Attribute Domain Values:
Range Domain:
Range Domain Minimum: <0.0115 Ma
Range Domain Maximum: 5.77 +/- 0.09 Ma
Attribute Units of Measure: Millions of years (Ma)
Detailed Description:
Entity Type:
Entity Type Label: Unit Boundary
Entity Type Definition: A unit boundary is the same as a contact. It is the ground-surface (or its trace on the surface, if buried/
concealed) boundary between two rock units. In this data set, the unit boundaries are polylines traced on the unit
polygon boundaries (except on the boundaries that corresponded with the edges of the quadrangle and were not the
true unit boundaries). The contacts have been approximately located. The unit boundary entities contain no attribute
information.
Entity Type Definition Source: None
Attribute:
Attribute Label: SurveyorMountainUnitBounds
Attribute Definition: This attribute contains no information and was created by MapInfo Professional version 7.0 when the
polylines were created with that program (although it originally had a slightly different name which has since been
changed). Each row in this attribute column corresponds to a polyline within the data set, not necessarily the complete
length of a unit’s boundary present on the map.
Attribute Definition Source: None
Detailed Description:
Entity Type:
Entity Type Label: Sample
Entity Type Definition: A sample, with regard to this data set, is a field-collected rock specimen from an in situ outcrop (lava
flows or vent deposits) located within the boundaries of the Surveyor Mountain USGS 7.5’ quadrangle (42122b2). The
goal was to collect a representative suite of samples for each unit, although only one sample was collected from within
the Tpbap unit (Basalt of Puckett Glade). A sample may have been apportioned for the following possible types of
analysis: hand-sample analysis with possible use of a hand lens and other tools; chemical analysis by x-ray fluorescence
spectroscopy (all samples); thin section analysis; age-dating by either K-Ar or 40Ar/39Ar methods. Samples can be
displayed as point data.
In the SurveyorMountainSamples file, sample collection locations are indicated with either a black triangle or with a
yellow square with a black outline. The black triangles represent samples for which there is available chemistry data in
the attributes table. The yellow squares represent samples that have been age-dated by K-Ar or 40Ar/39Ar dating
methods and also have chemistry data in the data table (attribute table).
Entity Type Definition Source: See Mertzman et al. (2008)
Attribute:
Attribute Label: Map_No
Attribute Definition: The Map_No is the map number. The map number is displayed on the Geologic maps made using this
dataset, such as the O-08-03Map30x36.pdf discussed above. Map numbers were assigned sequentially to all
of the samples after they were organized by age, formation, and silica content. The samples and their data were
organized first by the formation, from oldest to youngest formation. Within each formation the data were further
organized by placing age-dated samples before samples that were not age-dated. The age-dated samples for each
formation were arranged by silica content, from lowest to highest silica content. Then the non-age-dated samples for
each formation were arranged by silica content, from lowest to highest. After the data were organized, the map numbers
were assigned sequentially down the data table from 1 to 116.
Attribute Definition Source: None
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 1
Range Domain Maximum: 116
Attribute:
Attribute Label: Sample_No
Attribute Definition: The Sample_No is the combination of numbers and possibly letters that was assigned to a sample when it
was collected in the field, or shortly thereafter. The letters, if present, indicate the initials of the person who collected the
sample and the first two numbers represent the last two digits of the year in which the sample was collected. After the
first two numbers (possibly with two letters) is a dash followed by a unique number that indicates a sample’s place in the
order of collection for a particular year.
Attribute Definition Source: None
Attribute Domain Values:
Unpresentable Domain: The values of this attribute were created systematically, but they are not all numerical and there
is no very easy way to describe the domain of these values without creating a sizeable list of the actual values. It
is best to understand how the Sample_No attribute was assigned as discussed in the Attribute Definition above.
Attribute:
Attribute Label: KAr_Age_Ma
Attribute Definition: The KAr_Age_Ma is a sample’s absolute age in millions of years as determined by K-Ar or 40Ar/39Ar
dating methods. Not all samples collected in the Surveyor Mountain 7.5’ quadrangle have been age-dated; a total of 7
samples collected from outcrops within this quadrangle have been age dated. Also provided is the error range of the
dated age of a sample.
Attribute Definition Source: Consult Mertzman et al. (2008)
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 1.88 +/- 0.22
Range Domain Maximum: 3.7 +/- 0.3
Attribute Units of Measure: Millions of years (Ma)
Attribute:
Attribute Label: Qtr_of_Qtr
Attribute Definition: The Qtr_of_Qtr attribute is the quarter-quarter section classifier of the Public Land Survey System
(PLSS). This attribute describes in what quarter (NW, NE, SE, SW) of a quarter section of a section of a township a
sample was collected. All Township descriptors are according to the grid defined by the Willamette Meridian and
Attribute Definition Source: Consult http://www-atlas.usgs.gov/articles/boundaries/a_plss.html and
http://www.blm.gov/or/landrecords/legaldescrip.php
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: NW
Enumerated Domain Value Definition: The northwest quarter of a quarter section of a section of a township.
Enumerated Domain Value Definition Source:
Consult http://www-atlas.usgs.gov/articles/boundaries/a_plss.html
Enumerated Domain:
Enumerated Domain Value: NE
Enumerated Domain Value Definition: The northeast quarter of a quarter section of a section of a township.
Enumerated Domain Value Definition Source:
Consult http://www-atlas.usgs.gov/articles/boundaries/a_plss.html
Enumerated Domain:
Enumerated Domain Value: SE
Enumerated Domain Value Definition: The southeast quarter of a quarter section of a section of a township.
Enumerated Domain Value Definition Source:
Consult
http://www-atlas.usgs.gov/articles/boundaries/a_plss.html
Enumerated Domain:
Enumerated Domain Value: SW
Enumerated Domain Value Definition: The southwest quarter of a quarter section of a section of a township.
Enumerated Domain Value Definition Source:
Consult
http://www-atlas.usgs.gov/articles/boundaries/a_plss.html
Attribute:
Attribute Label: Qtr_of_Sec
Attribute Definition: The Qtr_of_Sec attribute is the quarter section classifier of the (PLSS). This attribute describes in what
quarter section (NW, NE, SE, SW) of a section of a township a sample was collected. All Township descriptors are
according to the grid defined by the Willamette Meridian and Willamette Base Line of the PLSS.
Attribute Definition Source: Consult http://www-atlas.usgs.gov/articles/boundaries/a_plss.html and
http://www.blm.gov/or/landrecords/legaldescrip.php
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: NW
Enumerated Domain Value Definition: The northwest quarter section of a section of a township.
Enumerated Domain Value Definition Source:
Consult http://www-atlas.usgs.gov/articles/boundaries/a_plss.html
Enumerated Domain:
Enumerated Domain Value: NE
Enumerated Domain Value Definition: The northeast quarter section of a section of a township.
Enumerated Domain Value Definition Source:
Consult
http://www-atlas.usgs.gov/articles/boundaries/a_plss.html
Enumerated Domain:
Enumerated Domain Value: SE
Enumerated Domain Value Definition: The southeast quarter section of a section of a township.
Enumerated Domain Value Definition Source:
Consult
http://www-atlas.usgs.gov/articles/boundaries/a_plss.html
Enumerated Domain:
Enumerated Domain Value: SW
Enumerated Domain Value Definition: The southwest quarter section of a section of a township.
Enumerated Domain Value Definition Source:
Consult http://www-atlas.usgs.gov/articles/boundaries/a_plss.html
Attribute:
Attribute Label: Sec
Attribute Definition: The Sec is the Section of the Township (according to the PLSS grid) in which the sample was collected.
The Section is “a one-square-mile block of land, containing 640 acres, or approximately one thirty-sixth of a township.
Due to the curvature of the Earth, sections may occasionally be slightly smaller than one square mile.” All Township
descriptors are according to the grid defined by the Willamette Meridian and Willamette Base Line of the PLSS.
Attribute Definition Source: Consult http://www-atlas.usgs.gov/articles/boundaries/a_plss.html and
http://www.blm.gov/or/landrecords/legaldescrip.php
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 1
Range Domain Maximum: 36
Attribute:
Attribute Label: T_S
Attribute
Definition: The T_S (Township_South) is
the value of the horizontal row of townships in the PLSS grid (
township rows that pertain to this data set are south of the Willamette Base Line of the PLSS. When combined with the
R_E (Range) attribute value, this information provides the specific ~36 square mile Township in the Willamette Meridian
and Base Line defined grid of the PLSS in which the sample was collected. The other more specific PLSS descriptor
attributes were described and discussed above.
Attribute Definition Source: Consult http://www-atlas.usgs.gov/articles/boundaries/a_plss.html and
http://www.blm.gov/or/landrecords/legaldescrip.php
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 38
Range Domain Maximum: 40
Attribute:
Attribute Label: R_E
Attribute
Definition: The R_E (Range_East) is the
value of the vertical column of townships in the PLSS grid (
township columns that pertain to this data set are to the East of the Willamette Meridian. When combined with the T_S
attribute value, this information provides the specific ~36 square mile Township in the Willamette Meridian and Base
Line defined grid of the PLSS in which the sample was collected. The other more specific PLSS descriptor attributes
were described above.
Attribute Definition Source: Consult http://www-atlas.usgs.gov/articles/boundaries/a_plss.html and
http://www.blm.gov/or/landrecords/legaldescrip.php
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 5
Range Domain Maximum: 6
Attribute:
Attribute Label: UTM_E_m
Attribute Definition: This is the easting value in meters of a sample’s collection location according to the NAD 1927 UTM Zone
10 projection system. This value was determined with the MapInfo Professional version 7.0 Coordinate Extractor
extension. In cases where the UTM coordinates were already known, the coordinate extractor extracted these same
coordinates. Please note that the precision indicated by this value does not necessarily represent the precision with
which a sample’s location was determined. Instead, it represents the precision of the MapInfo v.7.0 Coordinate
Extractor extension’s results as determined for carefully digitized sample location points (from original paper maps to
the drg of the quadrangle, except where coordinates were provided and already rounded to the nearest 10 meters).
Attribute Definition Source: Consult http://erg.usgs.gov/isb/pubs/factsheets/fs07701.html
Attribute Domain Values:
Range Domain:
Range
Domain Minimum: 562,137.26
Range
Domain Maximum: 572,276.46
Attribute Units of Measure: meters
Attribute:
Attribute Label: UTM_N_m
Attribute Definition: This is the northing value in meters of a sample's collection location according to the NAD 1927 UTM
Zone 10 projection system. This value was determined with the MapInfo Professional version 7.0 Coordinate Extractor
extension. In cases where the UTM coordinates were already known, the coordinate extractor extracted these same
coordinates. Please note that the precision indicated by this value does not necessarily represent the precision with
which a sample’s location was determined. Instead, it represents the precision of the MapInfo v.7.0 Coordinate
Extractor extension’s results as determined for carefully digitized sample location points (from original paper maps to
the drg of the quadrangle, except where coordinates were provided and already rounded to the nearest 10 meters).
Attribute Definition Source: Consult http://erg.usgs.gov/isb/pubs/factsheets/fs07701.html
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 4,663,816.25
Range
Domain Maximum: 4,677,415
Attribute Units of Measure: meters
Attribute:
Attribute Label: Unit
Attribute Definition: This is the unit, indicated by the unit’s symbol, to which a collected rock sample belongs. Samples
collected in an area of Tbv are grouped with the unit in which the Tbv is found.
Attribute Definition Source: See Mertzman et al. (2008)
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: Tpbgb
Enumerated
Domain Value Definition: Basalt of
Grouse
Enumerated Domain Value Definition Source: See Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Tpbac
Enumerated Domain Value Definition: Basaltic Andesite of Camp Creek (Lower to Middle Pliocene)
Enumerated Domain Value Definition Source: See Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Tpbap
Enumerated Domain Value Definition: Basaltic Andesite of Puckett Glade (Middle Pliocene?)
Enumerated Domain Value Definition Source: See Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Tpbak
Enumerated
Domain Value Definition: Basaltic
Andesite of
Enumerated Domain Value Definition Source: See Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Tpbab
Enumerated
Domain Value Definition: Basaltic
Andesite of
Enumerated Domain Value Definition Source: See Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Tpbsc
Enumerated Domain Value Definition: Basalt of Sheepy Creek (Middle to Upper Pliocene)
Enumerated Domain Value Definition Source: See Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Tpbtc
Enumerated Domain Value Definition: Basalt of Tunnel Creek (Upper Pliocene)
Enumerated Domain Value Definition Source: See Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Tpbas
Enumerated
Domain Value Definition: Basaltic
Andesite of
Pleistocene)
Enumerated Domain Value Definition Source: See Mertzman et al. (2008)
Enumerated Domain:
Enumerated Domain Value: Qbbl
Enumerated
Domain Value Definition: Basalt of
Enumerated Domain Value Definition Source: See Mertzman et al. (2008)
Attribute:
Attribute Label: Lith
Attribute Definition: The Lith attribute is an abbreviation of the lithology of the sample according to the total alkali (Na2O +
K2O (weight%(wt%))) versus silica (SiO2 wt%) classification (TAS classification) for volcanic rocks of Le Maitre
(2002). The chemistry of the sample was determined by x-ray fluorescence (XRF) spectroscopy. Macroscopic
characteristics of the various lithologies are not discussed here.
Attribute Definition Source: See Mertzman et al. (2008) and Le Maitre (2002)
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: B
Enumerated Domain Value Definition: Basalt: a volcanic rock with a silica content of 45-52 wt% and less than
5 wt% total alkali (Na2O + K2O wt%) content.
Enumerated Domain Value Definition Source: See Mertzman et al. (2008) and Le Maitre (2002)
Enumerated Domain:
Enumerated Domain Value: BA
Enumerated Domain Value Definition: Basaltic Andesite: a volcanic rock with 52-57 wt% silica content and a
total alkali content of less than 5 wt% at 52 wt% SiO2 and less than 5.9 wt% at 57 wt% SiO2. Between
52 and 57 wt% SiO2, the upper total alkali boundary increases linearly from 5 to 5.9 wt%.
Enumerated Domain Value Definition Source: See Mertzman et al. (2008), Le Maitre (2002) and
http://www.geol.lsu.edu/henry/Geology3041/lectures/02IgneousClassify/IUGS-
Attribute:
Attribute Label: SiO2_%
Attribute Definition: The weight percent (wt%) of silica (SiO2) in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 49.01
Range Domain Maximum: 56.95
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: TiO2_%
Attribute Definition: The weight percent (wt%) of titanium (TiO2) in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.73
Range Domain Maximum: 1.32
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: Al2O3_%
Attribute Definition: The weight percent (wt%) of aluminum (Al2O3) in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 15.94
Range Domain Maximum: 21.07
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: Fe2O3_%
Attribute Definition: The weight percent (wt%) of ferric iron (Fe2O3) in the sample as calculated using results measured by XRF
spectroscopy and Iron Titration.
Attribute Definition Source: See http://fandm.edu/x7991.xml and http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.6
Range Domain Maximum: 9.77
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: FeO_%
Attribute Definition: The weight percent (wt%) of ferrous Iron (FeO) in the sample determined by Iron Titration.
Attribute Definition Source: See http://fandm.edu/x7991.xml and http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.44
Range Domain Maximum: 7.8
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: MnO_%
Attribute Definition: The weight percent (wt%) of manganese (MnO) in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.1
Range Domain Maximum: 0.18
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: MgO_%
Attribute Definition: The weight percent (wt%) of magnesium (MgO) in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 3.55
Range Domain Maximum: 9.21
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: CaO_%
Attribute Definition: The weight percent (wt%) of calcium (CaO) in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 6.72
Range Domain Maximum: 11.09
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: Na2O_%
Attribute Definition: The weight percent (wt%) of sodium (Na2O) in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 2.41
Range Domain Maximum: 4.15
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: K2O_%
Attribute Definition: The weight percent (wt%) of potassium (K2O) in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.16
Range Domain Maximum: 1.13
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: P2O5_%
Attribute Definition: The weight percent (wt%) of phosphorous (P2O5) in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.13
Range Domain Maximum: 0.67
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: LOI_%
Attribute Definition: True Loss on Ignition: the amount of weight lost (weight percent (wt%)) by the sample after heating to
between 900ºC and 950ºC for one hour added to a value that accounts for the changes in weight resulting from the
oxidation of ferrous iron.
Attribute Definition Source: See http://fandm.edu/x7991.xml and http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.01
Range Domain Maximum: 2.31
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: Total_%
Attribute Definition: The total weight percent (wt%) is the sum of the weight percent values for SiO2, TiO2, Al2O3, Fe2O3,
FeO, MnO, MgO, CaO, Na2O, K2O, P2O5, and LOI.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 97.12
Range Domain Maximum: 100.96
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: Fe2O3T_%
Attribute Definition: The ferric iron content (wt%) measured by XRF spectroscopy. This is not the true amount of ferric iron
originally present in the rock sample because it also accounts for ferrous iron that was oxidized to ferric iron during the
preparation for XRF. The Fe2O3_% value described above is the true amount of ferric iron present in the rock sample.
Attribute Definition Source: See http://fandm.edu/x7991.xml and http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 7.05
Range Domain Maximum: 10.92
Attribute Units of Measure: weight percent (wt%)
Attribute:
Attribute Label: Rb_ppm
Attribute Definition: The amount (in parts per million (ppm)) of rubidium present in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 1.8
Range Domain Maximum: 15.4
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Sr_ppm
Attribute Definition: The amount (in parts per million (ppm)) of strontium present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 387
Range Domain Maximum: 1118
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Y_ppm
Attribute Definition: The amount (in parts per million (ppm)) of yttrium present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 1.4
Range Domain Maximum: 53.9
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Zr_ppm
Attribute Definition: The amount (in parts per million (ppm)) of zirconium present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 36
Range Domain Maximum: 141
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: V_ppm
Attribute Definition: The amount (in parts per million (ppm)) of vanadium present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 125
Range Domain Maximum: 238
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Ni_ppm
Attribute Definition: The amount (in parts per million (ppm)) of nickel present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 22
Range Domain Maximum: 214
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Cr_ppm
Attribute Definition: The amount (in parts per million (ppm)) of chromium present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 33
Range Domain Maximum: 393
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Nb_ppm
Attribute Definition: The amount (in parts per million (ppm)) of niobium present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 1.6
Range Domain Maximum: 9.8
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Ga_ppm
Attribute Definition: The amount (in parts per million (ppm)) of gallium present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 17
Range Domain Maximum: 22.2
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Cu_ppm
Attribute Definition: The amount (in parts per million (ppm)) of copper present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 15
Range Domain Maximum: 382
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Zn_ppm
Attribute Definition: The amount (in parts per million (ppm)) of zinc present in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 62
Range Domain Maximum: 89
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Co_ppm
Attribute Definition: The amount (in parts per million (ppm)) of cobalt present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 17
Range Domain Maximum: 46
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Ba_ppm
Attribute Definition: The amount (in parts per million (ppm)) of barium present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 129
Range Domain Maximum: 592
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: La_ppm
Attribute Definition: The amount (in parts per million (ppm)) of lanthanum present in the sample as measured by XRF
spectroscopy. Lanthanum content has not been measured in everysample, where no measurement occurred or the value
was below the instrument’s limit of sensitivity, a “—“ has been placed.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 3
Range Domain Maximum: 34
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Ce_ppm
Attribute Definition: The amount (in parts per million (ppm)) of cesium present in the sample as measured by XRF
spectroscopy. Cesium content has not been measured in every sample, where no measurement occurred or the value
was below the instrument’s limit of sensitivity, a “—“ has been placed.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 10
Range Domain Maximum: 61
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: U_ppm
Attribute Definition: The amount (in parts per million (ppm)) of uranium present in the sample as measured by XRF
spectroscopy. Not all samples have been measured for uranium. Uranium content has not been measured in every
sample, where no measurement occurred or the value was below the instrument’s limit of sensitivity, a “—“ has been
placed.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.1
Range Domain Maximum: 2.2
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Th_ppm
Attribute Definition: The amount (in parts per million (ppm)) of thorium present in the sample as measured by XRF
spectroscopy. Thorium content has not been measured in every sample, where no measurement occurred or the value
was below the instrument’s limit of sensitivity, a “—“ has been placed.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.3
Range Domain Maximum: 5.3
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Sc_ppm
Attribute Definition: The amount (in parts per million (ppm)) of scandium present in the sample as measured by XRF
spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 17
Range Domain Maximum: 36
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Pb_ppm
Attribute Definition: The amount (in parts per million (ppm)) of lead present in the sample as measured by XRF spectroscopy.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 3
Range Domain Maximum: 8.8
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Yb_ppm
Attribute Definition: The amount (in parts per million (ppm)) of ytterbium present in the sample as measured by XRF
spectroscopy. Ytterbium content has not been measured in most of the samples from the Surveyor Mountain 7.5’
quadrangle; where no measurement occurred or the value was below the instrument’s limit of sensitivity, a “—“ has
been placed.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.8
Range Domain Maximum: 2.5
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Be_ppm
Attribute Definition: The amount (in parts per million (ppm)) of beryllium present in the sample as measured by XRF
spectroscopy. There are many samples from the Surveyor Mountain 7.5’ quadrangle in which beryllium has not been
measured; a “—“ as an indication that the beryllium was not measured or was below the limit of sensitivity of the
instrument.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 0.9
Range Domain Maximum: 2.1
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Hf_ppm
Attribute Definition: The amount (in parts per million (ppm)) of hafnium present in the sample as measured by XRF
spectroscopy. Hafnium has not been measured in any samples from the Surveyor Mountain 7.5’ quadrangle, a “—“ is
present for this attribute for all of the samples from this quadrangle.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: —
Range Domain Maximum: —
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Ta_ppm
Attribute Definition: The amount (in parts per million (ppm)) of tantalum present in the sample as measured by XRF
spectroscopy. Tantalum has not been measured in any samples from the Surveyor Mountain 7.5’ quadrangle, a “—“ is
present for this attribute for all of the samples from this quadrangle.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: —
Range Domain Maximum: —
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Nd_ppm
Attribute Definition: The amount (in parts per million (ppm)) of neodymium present in the sample as measured by XRF
spectroscopy. Neodymium has not been measured in any samples from the Surveyor Mountain 7.5’ quadrangle, a “—“
is present for this attribute for all of the samples from this quadrangle.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: —
Range Domain Maximum: —
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Sm_ppm
Attribute Definition: The amount (in parts per million (ppm)) of samarium present in the sample as measured by XRF
spectroscopy. Samarium has not been measured in any samples from the Surveyor Mountain 7.5’ quadrangle, a “—“ is
present for this attribute for all of the samples from this quadrangle.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: —
Range Domain Maximum: —
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Eu_ppm
Attribute Definition: The amount (in parts per million (ppm)) of europium present in the sample as measured by XRF
spectroscopy. Europium has not been measured in any samples from the Surveyor Mountain 7.5’ quadrangle, a “—“ is
present for this attribute for all of the samples from this quadrangle.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: —
Range Domain Maximum: —
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Tb_ppm
Attribute Definition: The amount (in parts per million (ppm)) of terbium present in the sample as measured by XRF
spectroscopy. Terbium has not been measured in any samples from the Surveyor Mountain 7.5’ quadrangle, a “—“ is
present for this attribute for all of the samples from this quadrangle.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: —
Range Domain Maximum: —
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: Lu_ppm
Attribute Definition: The amount (in parts per million (ppm)) of lutetium present in the sample as measured by XRF
spectroscopy. Lutetium has not been measured in any samples from the Surveyor Mountain 7.5’ quadrangle, a “—“ is
present for this attribute for all of the samples from this quadrangle.
Attribute Definition Source: See http://fandm.edu/x7985.xml
Attribute Domain Values:
Range Domain:
Range Domain Minimum: —
Range Domain Maximum: —
Attribute Units of Measure: parts per million (ppm)
Attribute:
Attribute Label: DatedOrNot
Attribute
Definition: This attribute is only
present in the ESRI Shapefile formatted
(SurveyorMountainSamples_point.shp). This attribute indicates if a sample was age-dated or not.
Attribute Definition Source: None
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: Y
Enumerated Domain Value Definition: The Y stands for “Yes,” meaning that this rock sample has been age-
dated by K-Ar or 40Ar/39Ar dating methods.
Enumerated Domain Value Definition Source: None
Enumerated Domain:
Enumerated Domain Value: N
Enumerated Domain Value Definition: The N stands for “No,” meaning that this rock sample has not been age-
dated with radiometric dating methods.
Enumerated Domain Value Definition Source: None
Detailed Description:
Entity Type:
Entity Type Label: Volcanic Center
Entity Type Definition: A volcanic center is a source of volcanic rocks. In other words, it is a location where subterranean
magma has erupted
onto the surface. The locations of the some of the volcanic centers in the
quadrangle were determined on the basis of vent deposits. Other observations made in the field helped to locate
volcanic centers where there were no vent deposits. In this data set, the volcanic centers are point data displayed as red
triangles with a black outline.
Entity Type Definition Source: See Mertzman et al. (2008) for a description of the vent deposits.
Attribute:
Attribute Label: UTM_E_m
Attribute Definition: This is the easting value in meters of a volcanic center's location according to the NAD 1927 UTM Zone
10 projection system. This value was determined with the MapInfo Professional version 7.0 Coordinate Extractor tool.
The precision of this value does not represent that with which it was determined, but is the precision provided by
MapInfo Professional v.7.0's Coordinate Extractor extension for the points manually digitized to the georeferenced
quadrangle drg.
Attribute Definition Source: None
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 563,970.64
Range Domain Maximum: 571,598.67
Attribute Units of Measure: meters
Attribute:
Attribute Label: UTM_N_m
Attribute Definition: This is the easting value in meters of a volcanic center's location according to the NAD 1927 UTM Zone
10 projection system. This value was determined with the MapInfo Professional version 7.0 Coordinate Extractor tool.
The precision of this value does not represent that with which it was determined, but is the precision provided by
MapInfo Professional v.7.0's Coordinate Extractor extension for the points manually digitized to the georeferenced
quadrangle drg.
Attribute Definition Source: None
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 4,663,930
Range Domain Maximum: 4,677,040.97
Attribute Units of Measure: meters
Detailed Description:
Entity Type:
Entity Type Label: Fault
Entity Type Definition: A fault is a planar fracture or area of fractured rock where there is relative movement of large bodies
of rock. There are many prominent faults in the Surveyor Mountain USGS 7.5’ Quadrangle. These faults are normal
faults. The dashed lines with the hatch marks/ tick marks/ bars represent the inferred location of the faults where the fault
traces are buried/ concealed. The solid lines with hatch marks/ tick marks/ bars represents the approximate location of
the fault traces. The hatch marks/ tick marks/ bars are on the down-dropped block (hanging wall).
Entity Type Definition Source: See Mertzman et al. (2008), http://volcanoes.usgs.gov/Products/Pglossary/fault.html ,
http://www.ucmp.berkeley.edu/glossary/glossary_2.html
, http://earthquake.usgs.gov/learning/glossary.
php?term=fault%20plane , http://www2.nature.nps.gov/geology/usgsnps/deform/ghangft.html and
http://en.wikipedia.org/wiki/Fault_%28geology%29
Attribute:
Attribute Label: Appr_or_Conc
Attribute Definition: This attribute indicates if the fault trace is present on the earth’s surface or if the fault is buried, such as
by Quaternary-aged alluvium.
Attribute Definition Source: None
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: Approximate
Enumerated Domain Value Definition: This indicates that the fault trace is present on the earth’s surface and that
its location is a close approximation. This portion of the fault is displayed on the geologic map as a
hatch-marked solid line with the bars / hatches on the down-dropped block (hanging wall).
Enumerated Domain Value Definition Source: None
Attribute:
Attribute Label: Type_of_Fault
Attribute Definition: This attribute indicates the type of fault present.
Attribute Definition Source: None
Attribute Domain Values:
Enumerated Domain:
Enumerated
Domain Value:
Enumerated Domain Value Definition: A normal fault is a plane at which the hanging wall moves down relative
to the footwall (in other words, one body of rock slides down along the fault relative to the other body
of rock). The fault plane slopes downward in the direction of the hanging-wall.
Enumerated
Domain Value Definition Source: Consult http://eqseis.geosc.psu.edu/~cammon/HTML/
Classes/IntroQuakes/Notes/faults.html
Attribute:
Attribute Label: Notes
Attribute Definition: These are notes with important details about the fault, indicating the location of the down-dropped block /
hanging wall relative to the fault.
Attribute Definition Source: None
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: Down-dropped block is to the east of the fault.
Enumerated Domain Value Definition: This means what it says. The hanging-wall is the down-dropped body
of rock, which is to the east of the fault (on the side where the tick marks are on the map). The body
of rock to the east of the fault is moving down along the fault relative to the body of rock to the west
(the footwall).
Enumerated Domain Value Definition Source: Please see Mertzman et al. (2008) and
http://eqseis.geosc.psu.edu/~cammon/HTML/Classes/IntroQuakes/Notes/faults.html
Distribution Information
Metadata Reference Information
Metadata Date: 20080327
Metadata Contact:
Contact Information:
Contact Person Primary:
Contact Person: Isaac Weaver
Contact Position: Research Assistant
Contact Address:
Address Type: mailing and physical address
Address: Isaac Weaver,
City:
State or
Province:
Postal Code: 17604
Contact Voice Telephone: Unavailable
Contact Electronic Mail Address: iweaver@fandm.edu
Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: Version 2 – 1998