Geologic Map of the Mound Spring Quadrangle, Nye and Clark Counties, Nevada, and Inyo County, California

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Scott C. Lundstrom
Originator: Shannon A. Mahan
Originator: Richard J. Blakely
Originator: James B. Paces
Originator: Owen D. Young
Originator: Jeremiah B. Workman
Originator: Gary L. Dixon
Publication_Date: 2002
Title:
Geologic Map of the Mound Spring Quadrangle, Nye and Clark Counties, Nevada, and Inyo County, California
Edition: version 1.0
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-2339
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Online_Linkage: http://pubs.usgs.gov/mf/2002/mf-2339/
Description:
Abstract:
The Mound Spring quadrangle, the southwestern-most 7.5' quadrangle of the area of the Las Vegas 1:100,000-scale quadrangle, is entirely within the Pahrump Valley, spanning the Nevada/California State line. New geologic mapping of the predominantly Quaternary materials is combined with new studies of gravity and geochronology in this quadrangle. Eleven predominantly fine-grained units are delineated, including playa sediment, dune sand, and deposits associated with several cycles of past groundwater discharge and distal fan sedimentation. These units are intercalated with 5 predominantly coarse-grained alluvial-fan and wash gravel units mainly derived from the Spring Mountains. The gravel units are distinguished on the basis of soil development and associated surficial characteristics. Thermoluminescence and U-series geochronology constrain most of the units to the Holocene and late and middle Pleistocene. Deposits of late Pleistocene groundwater discharge in the northeast part of the quadrangle are associated with a down-to- the-southwest fault zone that is expressed by surface fault scarps and a steep gravity gradient. The gravity field also defines a northwest-trending uplift along the State line, in which the oldest sediments are poorly exposed. About 2 km to the northeast a prominent southwest-facing erosional escarpment is formed by resistant beds in middle Pleistocene fine-grained sediments that dip northeast away from the uplift. These sediments include cycles of groundwater discharge that were probably caused by upwelling of southwesterly groundwater flow that encountered the horst.
Purpose:
This map was produced in conjunction with the Las Vegas 1:100,000-scale geologic map to fill in previously unmapped areas of surficial geology in the Pahrump Valley area. Mapping in the Pahrump Valley at 1:24,000 scale has been completed jointly by the USGS (Mound Spring quadrangle and Hidden Hills Ranch quadrangle) and the Nevada Bureau of Mines and Geology (Pahrump quadrangle). Mapping was prepared in cooperation with the Nye County Nuclear Waste Repository Project Office. Gravity data was collected to help define the basement structure of the basin and surficial mapping was completed to define the areal extent of deposits, surface expressions of basement structure, areas of past groundwater discharge, areas of surface rupture due to expanding soils and groundwater withdrawl, and significant flash- flood hazards. Dating of soil samples was completed to refine the Cenozoic stratigraphy and correlate surficial units between Pahrump Valley and other nearby basins.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2002
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -116.000
East_Bounding_Coordinate: -115.875
North_Bounding_Coordinate: 36.125
South_Bounding_Coordinate: 36.000
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geology
Theme_Keyword: geologic maps
Theme_Keyword: geologic structure
Theme_Keyword: bedrock geologic units
Theme_Keyword: surficial geologic units
Theme_Keyword: geochronology
Theme_Keyword: gravitational field (earth)
Theme_Keyword: groundwater flow
Theme_Keyword: geospatial datasets
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: Geologic mapping
Theme_Keyword: Surficial geologic mapping
Theme_Keyword: paleospring discharge
Theme_Keyword: playa
Theme_Keyword: quaternary fault scarp
Theme_Keyword: alluvial fan
Theme_Keyword: U-series disequilibrium geochronology
Theme_Keyword: thermoluminescence geochronology
Theme_Keyword: gravity contours
Theme_Keyword: basin depth
Theme_Keyword: Pahrump Valley fault
Theme_Keyword: eolian dunes
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Nevada
Place_Keyword: California
Place_Keyword: Clark County
Place_Keyword: Nye County
Place_Keyword: Inyo County
Place_Keyword: Pahrump Valley
Place_Keyword: Pahrump
Place_Keyword: Mound Spring
Place_Keyword: Pahrump playa
Place:
Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4
Place_Keyword: f06027 = Inyo
Place_Keyword: f32003 = Clark
Place_Keyword: f32023 = Nye
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jeremiah B. Workman
Contact_Organization: U. S. Geological Survey
Contact_Address:
Address_Type: Mailing Address
Address: Box 25046
Address: Denver Federal Center, MS-913
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: U.S.A.
Contact_Voice_Telephone: 303-236-1257
Contact_Electronic_Mail_Address: jworkman@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: http://pubs.usgs.gov/mf/2002/mf-2339/mf-2339.gif
Browse_Graphic_File_Description:
Reduced-size image of the entire map sheet, 288x216 pixels, 20k bytes.
Browse_Graphic_File_Type: GIF
Browse_Graphic:
Browse_Graphic_File_Name: http://pubs.usgs.gov/mf/2002/mf-2339/mf-2339.pdf
Browse_Graphic_File_Description: Printable representation of map sheet, 1.6 megabytes
Browse_Graphic_File_Type: PDF
Native_Data_Set_Environment:
SunOS 5.7, sun4m UNIX ARC/INFO version 7.1.2
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The attributes have been checked by both the authors and the reviewers for agreement with field maps, annotated airphotos, annotated orthophoto quads, and preliminary drafted versions of the map.
Logical_Consistency_Report:
The entire study area was mapped both by photo-interpretation of aerial photographs at 1:31,680-scale and the orthophoto-quadrangle at 1:24,000-scale, and by field work which was compiled at 1:24,000-scale. The entire map area was mapped at the same level of detail, by the same geologist (Lundstrom), over a single field season. All linework was digitized at 1:24,000-scale and attributes added using GSMCAD (Williams, 1996). All lines were visually inspected by the authors for proper intersections, repetition, overshoots, undershoots, and overall logical consistency. The geologic features in the map area are all described, in the view of the authors, at a consistent scale of 1:24,000. All coverages were cleaned and built in ARC/INFO (version 7.1.2) to ensure a logical consistency which is topologically clean.
The database was digitized in GSMCAD (Williams, 1996) which does not allow unattributed lines so there are no unlabeled lines in the database. Frequency tests were run on the polygon labels to ensure that no polygons are unlabeled.
Completeness_Report:
This dataset includes only the coverages pertaining to the geologic map. Any margin material on the printed map (correlation chart, explanation of map symbols) is not included. This map was produced to be used at 1:24,000-scale. Any geologic features too small to be shown at this scale have been omitted or generalized if they are of significant importance. The smallest objects are approximately 12 meters on a side.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The estimated horizontal positional accuracy of the data is 6 meters. Photo-interpretation from aerial photographs at 1:31,680-scale was transfered to 1:24,000-scale stable base maps using a PG-2 stereographic plotter. All other mapping was conducted by field investigation and orthophoto-interpretation at 1:24,000-scale. All linework was digitized at 1:24,000- scale using a CalComp digitizing tablet (model 34360) with an accuracy of 0.005 inches (3 meters at map scale). This database was produced to be used at 1:24,000-scale and any problems arising from use at other scales are not the responsibilities of the authors. No vertical data is included in the database.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Anderson, R.E.
Originator: Crone, A.J.
Originator: Machette, M.N.
Originator: Bradley, L.A.
Originator: Diehl, S.F.
Title:
Characterization of Quaternary and suspected Quaternary Faults, Amargosa area, Nevada and California
Publication_Date: 1995
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 95-613
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1995
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Anderson et al. (1995)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Bell, J.W.
Originator: Ramelli, A.R.
Originator: Caskey, S.J.
Title:
Geologic Map of the Tule Springs Park Quadrangle, Clark County, Nevada
Publication_Date: 1998
Series_Information:
Series_Name: Nevada Bureau of Mines and Geology Map
Issue_Identification: 113
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1998
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Bell et al. (1998)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Blakely, R.J.
Originator: Simpson, R.W.
Title:
Approximating edges of source bodies from magnetic or gravity anomalies
Publication_Date: 1986
Series_Information:
Series_Name: Geophysics
Issue_Identification: v. 51
Other_Citation_Details: pp. 1494-1498
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1986
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Blakely and Simpson (1986)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Blakely, R.J
Originator: Morin, R.L.
Originator: Faunt, C.C.
Title:
Looking beneath the subsurface: a three-dimensional geophysical view of the Death Valley Region, California and Nevada, in Slate, J.L, ed., Proceedings of conference on status of geologic research and and mapping, Death Valley National Park
Publication_Date: 1999
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 99-153
Other_Citation_Details: pp. 47-51
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1999
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Blakely et al. (1999a)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Blakely, R.J.
Originator: Jachens, R.C.
Originator: Calzia, J.P.
Originator: Langenheim, V.E.
Title:
Cenozoic basins of the Death Valley extended terrane as reflected in regional-scale gravity anomalies, in Wright, L.A., and Troxel, B.W., eds., Cenozoic Basins of the Death Valley Region
Publication_Date: 1999
Series_Information:
Series_Name: Geoogical Society of America Special Paper
Issue_Identification: 3333
Publication_Information:
Publication_Place: Denver, CO
Publisher: Geological Society of America
Other_Citation_Details: pp. 1-16
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1999
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Blakely et al. (1999b)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Bohannon, R.G.
Title:
Geologic map, tectonic map and structure sections of the Muddy and northern Black Mountains, Clark County, Nevada
Publication_Date: 1983
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map
Issue_Identification: I-1406
Source_Scale_Denominator: 62500
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1983
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Bohannon (1983)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Bohannon, R.G.
Title:
Nonmarine sedimentary rocks of Tertiary age in the Lake Mead region, southeastern Nevada
Publication_Date: 1984
Series_Information:
Series_Name: U.S. Geological Survey Professional Paper
Issue_Identification: 1259
Other_Citation_Details: 72 p.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1984
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Bohannon (1984)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Burchfiel, B.C.
Originator: Fleck, R.J.
Originator: Secor, D.T.
Originator: Vincelette, R.R.
Originator: Davis, G.A.
Title: Geology of the Spring Mountains, Nevada
Publication_Date: 1974
Series_Information:
Series_Name: Geological Society of America Bulletin
Issue_Identification: v. 85
Other_Citation_Details: p. 1013-1022
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1974
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Burchfiel et al. (1974)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: DePolo, C.M.
Originator: Ramelli, A.R.
Originator: Bell, J.W.
Title: Geologic map of the Pahrump Quadrangle, Nevada
Publication_Date: 1999
Series_Information:
Series_Name: Nevada Bureau of Mines and Geology Open-File Report
Issue_Identification: 99-14
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1999
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: DePolo et al. (1999)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Gile, L.H.
Originator: Peterson, F.F.
Originator: Grossman, R.B.
Title:
Morphological and genetic sequences of carbonate accumulation in desert soils
Publication_Date: 1966
Series_Information:
Series_Name: Soil Science
Issue_Identification: v. 101
Other_Citation_Details: pp. 347-360
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1966
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Gile et al. (1966)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Harrill, J.R.
Title:
Ground-water storage depletion, Pahrump Valley, Nevada-California 1962-75
Publication_Date: 1986
Series_Information:
Series_Name: U.S. Geological Survey Water-Supply Paper
Issue_Identification: 2279
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1986
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Harrill (1986)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Haynes, C.V.
Title:
Quaternary Geology of the Tule Springs Area, Clark County, Nevada, in Pleistocene Studies of Southern Nevada, Wormington, H.M., and Ellis, D., Eds.
Publication_Date: 1967
Series_Information:
Series_Name: Nevada State Museum Anthropological Paper
Issue_Identification: no. 13
Other_Citation_Details: pp. 1-104
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1967
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Haynes (1967)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Hoffard, J.L.
Title:
Quaternary tectonics and basin history of Pahrump and Stewart Valleys, Nevada and California
Publication_Date: 1991
Publication_Information:
Publication_Place: Reno, NV
Publisher: University of Nevada, Reno
Other_Citation_Details: M.S. thesis
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1991
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Hoffard (1991)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Maldonado, F.
Originator: Schmidt, D.L.
Title:
Geologic Map of the southern Sheep Range, Fossil ridge, and Castle Rock area, Clark County, Nevada
Publication_Date: 1991
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map
Issue_Identification: MF-2182.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1991
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Maldonado and Schmidt (1991)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Malmberg, G.T.
Title:
Hydrology of the valley-fill and carbonate-rock reservoirs, Pahrump Valley, Nevada-California
Publication_Date: 1967
Series_Information:
Series_Name: U.S. Geological Survey Water-Supply Paper
Issue_Identification: 1832
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1967
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Malmberg (1967)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: McMackin, M.R.
Title:
Geology of the Stump Spring Quadrangle-Evidence of late Quaternary transpression on the southern segment of the Pahrump Valley fault zone, Nevada and California, in Slate, J.L, ed., Proceedings of conference on status of geologic research and and mapping, Death Valley National Park
Publication_Date: 1999
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 99-153
Other_Citation_Details: p. 162
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1999
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: McMackin (1999)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Quade, J.
Title:
Late Quaternary environmental changes in the upper Las Vegas Valley, Nevada
Publication_Date: 1986
Series_Information:
Series_Name: Quaternary Research
Issue_Identification: v. 26
Other_Citation_Details: pp. 340-357
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1986
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Quade (1986)
Source_Contribution: Mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Quade, J.
Originator: Mifflin, M.D.
Originator: Pratt, W.L.
Originator: McCoy, W.
Originator: Burckle, L.
Title:
Fossil Spring Deposits in the southern Great Basin and their implications for changes in water-table levels near Yucca Mountain, Nevada, during Quaternary time
Publication_Date: 1995
Series_Information:
Series_Name: Geological Society of America Bulletin
Issue_Identification: v. 107
Other_Citation_Details: pp. 213-230
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1995
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Quade et al. (1995)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Schmidt, K.M.
Originator: Davidson, J.G.
Title:
Using geomorphic features to constrain tectonic activity near Pahrump Valley, Nevada and California, in Slate, J.L, ed., Proceedings of conference on status of geologic research and and mapping, Death Valley National Park
Publication_Date: 1999
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 99-153
Other_Citation_Details: pp. 154-155
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1999
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Schmidt and Davidson (1999)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Spaulding, W.G.
Originator: Quade, J.
Title:
The Quaternary paleoecology and paleohydrology of the eastern Mojave Desert
Publication_Date: 1996
Series_Information:
Series_Name: guidebook
Issue_Identification: 1996 American Quaternary Association Meetings
Publication_Information:
Publication_Place: Flagstaff, AZ
Publisher: American Quaternary Association
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1996
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Spaulding and Quade (1996)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Waring, G.A.
Title:
Ground water in Pahrump, Mesquite, and Ivanpah valleys, Nevada and California
Publication_Date: 1920
Series_Information:
Series_Name: U.S. Geological Survey Water-Supply Paper
Issue_Identification: 450-C
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1920
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Waring (1920)
Source_Contribution: mapping source information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Williams, Van S.
Title:
GSMCAD, a new computer program that combines the functions of the GSMAP and GSEDIT programs and is compatible with Microsoft Windows and ARC/INFO
Publication_Date: 1996
Series_Information:
Series_Name: U. S. Geological Survey Open-File Report
Issue_Identification: 96-007
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1996
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Williams (1996)
Source_Contribution: software for digitizing linework

Source_Information:
Source_Citation:
Citation_Information:
Originator: Workman, J.B.
Originator: Lundstrom, S.C.
Originator: Blackely, R.J.
Originator: Dixon, G.L.
Title:
Geologic map of the Hidden Hills Ranch Quadrangle Clark County, Nevada
Publication_Date: unpublished material
Other_Citation_Details: in review
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Workman et al. (in press)
Source_Contribution: mapping source information
Process_Step:
Process_Description:
Linework and labels digitized and attributed in GSMCAD (Williams, 1996).
Process_Date: 1998 to 1999
Process_Step:
Process_Description:
Map and digital files reviewed by Jeremiah Workman (USGS) and edits made in ARC/INFO.
Process_Date: 1999
Process_Step:
Process_Description: Map reviewed by William Page (USGS) and edits made in ARC/INFO.
Process_Date: 1999
Process_Step:
Process_Description:
Data set exported and compressed for publication and digital release.
Process_Date: 2000
Process_Step:
Process_Description: Creation of original metadata record
Process_Date: 20090709
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jeremiah B. Workman
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address:
Mail Stop 913
Box 25046 Denver Federal Center
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: 303-236-1257
Contact_Electronic_Mail_Address: jworkman@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: vector
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 11
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -117.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.6
Ordinate_Resolution: 0.6
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: 294.98
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
All coverages contain the standardized attributes for arcs and polygons assigned by ARC/INFO. For arcs these attributes are:
COLUMN--ITEM_NAME----------WIDTH-----OUTPUT-----TYPE---#_DECIMALS
1-------FNODE#---------------4----------5---------B---------\
5-------TNODE#---------------4----------5---------B---------\
9-------LPOLY#---------------4----------5---------B---------\
13------RPOLY#---------------4----------5---------B---------\
17------LENGTH---------------8---------18---------F---------5
25------<cover>#-------------4----------5---------B---------\
29------<cover>-ID-----------4----------5---------B---------\
For polygons these attributes are:
COLUMN--ITEM_NAME----------WIDTH-----OUTPUT-----TYPE---#_DECIMALS
1-------AREA-----------------8---------18---------F---------5
9-------PERIMETER------------8---------18---------F---------5
17------<cover>#-------------4----------5---------B---------\
21------<cover>-ID-----------4----------5---------B---------\
The database consists of seven coverages (and one related scan; see Supplemental_Information) which contain the folowing data:
COVERAGE------------ENTITIES-----------DESCRIPTION
MOUNDSPG-GEO--------POLY/ARC-----------Geologic contacts and unit labels.
MOUNDSPG-FLT--------ARC----------------Geologic structures including faults, fold axes, and tension cracks.
MOUNDSPG-ATT--------POINT--------------Bedding attitudes.
MOUNDSPG-SYM--------ARC----------------Graphical representation of fault offset symbols (strike-slip arrows and bar-and-balls).
MOUNDSPG-GRV--------ARC----------------Graphical representation of gravity contours (includes contour values).
MOUNDSPG-DAT--------POINT/ARC----------U-series and thermoluminescence sample locations and graphical representation of symbols.
MOUNDSPG-TXT--------POINT/ARC----------Unit label points and leader lines.
The individual attributes for each coverage are described as follows:
MOUNDSPG-GEO (polygon attributes): UNIT--Character attribute for rock unit from text (see table below); SYMBOL--Integer attribute for polygon shade symbol from shadeset color524.shd (see table below).
MOUNDSPG-GEO (arc attributes): CODE--Integer attribute for line type (see table below); DESCRIPTION--Character attribute for line type description (see table below).
MOUNDSPG-FLT (arc attributes): CODE--Integer attribute for line type (see table below); DESCRIPTION--Character attribute for line type description (see table below).
MOUNDSPG-ATT (point attributes): CODE--Integer attribute for line type (see table below); DESCRIPTION--Character attribute for line type description (see table below); AZIMUTH--Integer attribute for bedding attitude strike azimuth (clockwise from north); DIP--Integer attribute for bedding attitude dip value.
MOUNDSPG-SYM (arc attributes): CODE--Integer attribute for line type (see table below); DESCRIPTION--Character attribute for line type description (see table below).
MOUNDSPG-GRV (arc attributes): Only standard ARC attributes.
MOUNDSPG-DAT (arc attributes): Only standard ARC attributes.
MOUNDSPG-DAT (point attributes): SAMPLE-ID--Character attribute for U-series and thermoluminescence sample name.
MOUNDSPG-TXT (arc attributes): Only standard ARC attributes.
MOUNDSPG-TXT (point attributes): UNIT--Character attribute for rock unit from text (see table below).
UNIT/SYMBOL attribute values (see map text for explanation of lithologic units):
QTa,109
Qai,85
Qau,108
Qay,39
Qayo,40
Qayy,2
Qbo,224
Qbw,222
Qby,216
Qd,19
Qfo,102
Qfy,100
Qpy,6
Qscd,225
Qse,224
Qsu,233
Qsy,221
CODE/DESCRIPTION attribute values:
4 ,"definite contact in quaternary"
5 ,"inferred contact in quaternary"
10 ,"definite high angle fault"
11 ,"inferred high angle fault"
12 ,"concealed high angle fault"
20 ,"definite fold axis"
21 ,"inferred fold axis"
22 ,"concealed fold axis"
88 ,"tension crack"
99 ,"map boundary"
201 ,"bedding strike and dip"
207 ,"bar and ball"
210 ,"right-lateral strike-slip"
Entity_and_Attribute_Detail_Citation: http://pubs.usgs.gov/mf/2002/mf-2339/mf-2339pam508.pdf
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address: Central Publications Group
Address: Box 25046
Address: Denver Federal Center, MS-902
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Contact_Voice_Telephone: 303-236-5486
Resource_Description: USGS Miscellaneous Field Studies Map MF-2339
Distribution_Liability:
This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE
Format_Version_Number: 7.1.2
Format_Information_Content: Geologic units and structural features
File_Decompression_Technique:
.tar.gz - UNIX gzip-compressed TAR file- use GNU zip and TAR .exe - self-extracting Windows ZIP archive- execute the file to extract
Transfer_Size: 1.4
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Version_Number: 1.0
Format_Information_Content: Geologic units and structural features
File_Decompression_Technique:
.tar.gz - UNIX gzip-compressed TAR file- use GNU zip and TAR .exe - self-extracting Windows ZIP archive- execute the file to extract
Transfer_Size: 1.4
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20160205
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter N Schweitzer
Contact_Organization: USGS Midwest Area
Contact_Position:
Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/
Contact_Address:
Address_Type: mailing address
Address:
Mail Stop 954
12201 Sunrise Valley Dr
City: Reston
State_or_Province: VA
Postal_Code: 20192-0002
Country: USA
Contact_Voice_Telephone: 703-648-6533
Contact_Facsimile_Telephone: 703-648-6252
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none

This page is <https://geo-nsdi.er.usgs.gov/metadata/map-mf/2339/metadata.html>
Generated by mp version 2.9.48 on Tue Jul 03 20:05:02 2018