Identification_Information: Citation: Citation_Information: Originator: Christopher J. Potter Originator: Robert P. Dickerson Originator: Donald S. Sweetkind Originator: Ronald M. Drake II Originator: Emily M. Taylor Originator: Christopher J. Fridrich Originator: Carma A. San Juan Originator: Warren C. Day Publication_Date: 2002 Title: Geologic map of the Yucca Mountain region, Nye County, Nevada Edition: 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Geologic Investigations Series Issue_Identification: I-2755 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://geology.cr.usgs.gov/pub/i-maps/i-2755/ Description: Abstract: Yucca Mountain, Nye County, Nev., has been identified as a potential site for underground storage of high-level radioactive waste. This geologic map compilation, including all of Yucca Mountain and Crater Flat, most of the Calico Hills, western Jackass Flats, Little Skull Mountain, the Striped Hills, the Skeleton Hills, and the northeastern Amargosa Desert, portrays the geologic framework for a saturated-zone hydrologic flow model of the Yucca Mountain site. Key geologic features shown on the geologic map and accompanying cross sections include: (1) exposures of Proterozoic through Devonian strata inferred to have been deformed by regional thrust faulting and folding, in the Skeleton Hills, Striped Hills, and Amargosa Desert near Big Dune; (2) folded and thrust-faulted Devonian and Mississippian strata, unconformably overlain by Miocene tuffs and lavas and cut by complex Neogene fault patterns, in the Calico Hills; (3) the Claim Canyon caldera, a segment of which is exposed north of Yucca Mountain and Crater Flat; (4) thick densely welded to nonwelded ash-flow sheets of the Miocene southwest Nevada volcanic field exposed in normal-fault-bounded blocks at Yucca Mountain; (5) upper Tertiary and Quaternary basaltic cinder cones and lava flows in Crater Flat and at southernmost Yucca Mountain; and (6) broad basins covered by Quaternary and upper Tertiary surficial deposits in Jackass Flats, Crater Flat, and the northeastern Amargosa Desert, beneath which Neogene normal and strike-slip faults are inferred to be present on the basis of geophysical data and geologic map patterns. A regional thrust belt of late Paleozoic or Mesozoic age affected all pre-Tertiary rocks in the region; main thrust faults, not exposed in the map area, are interpreted to underlie the map area in an arcuate pattern, striking north, northeast, and east. The predominant vergence of thrust faults exposed elsewhere in the region, including the Belted Range and Specter Range thrusts, was to the east, southeast, and south. The vertical to overturned strata of the Striped Hills are hypothesized to result from successive stacking of three south-vergent thrust ramps, the lowest of which is the Specter Range thrust. The CP thrust is interpreted as a north-vergent backthrust that may have been roughly contemporaneous with the Belted Range and Specter Range thrusts. The southwest Nevada volcanic field consists predominantly of a series of silicic tuffs and lava flows ranging in age from 15 to 8 Ma. The map area is in the southwestern quadrant of the southwest Nevada volcanic field, just south of the Timber Mountain caldera complex. The Claim Canyon caldera, exposed in the northern part of the map area, contains thick deposits of the 12.7-Ma Tiva Canyon Tuff, along with widespread megabreccia deposits of similar age, and subordinate thick exposures of other 12.8- to 12.7-Ma Paintbrush Group rocks. An irregular, blocky fault array, which affects parts of the caldera and much of the nearby area, includes several large-displacement, steeply dipping faults that strike radially to the caldera and bound south-dipping blocks of volcanic rock. South and southeast of the Claim Canyon caldera, in the area that includes Yucca Mountain, the Neogene fault pattern is dominated by closely spaced, north-northwest- to north-northeast-striking normal faults that lie within a north-trending graben. This 20- to 25-km-wide graben includes Crater Flat, Yucca Mountain, and Fortymile Wash, and is bounded on the east by the "gravity fault" and on the west by the Bare Mountain fault. Both of these faults separate Proterozoic and Paleozoic sedimentary rocks in their footwalls from Miocene volcanic rocks in their hanging walls. Stratigraphic and structural relations at Yucca Mountain demonstrate that block-bounding faults were active before and during eruption of the 12.8- to 12.7-Ma Paintbrush Group, and significant motion on these faults continued until after the 11.6-Ma Rainier Mesa Tuff was deposited. North of Crater Flat, in and near the Claim Canyon caldera, most of the tilting of the volcanic section predated the 11.6-Ma Rainier Mesa Tuff. In contrast, geologic relations in central and southern Yucca Mountain indicate that much of the stratal tilting there occurred after 11.6 Ma, probably synchronous with the main pulse of vertical-axis rotation that occurred between 11.6 and 11.45 Ma. Beneath the broad basins, such as Crater Flat, Jackass Flats, and the Amargosa Desert, faults are inferred from geophysical data. Geologic and geophysical data imply the presence of the large-offset, east-west-striking Highway 95 fault beneath surficial deposits along the northeast margin of the Amargosa Desert, directly south of Yucca Mountain and Crater Flat. The Highway 95 fault is interpreted to be downthrown to the north, with a component of dextral displacement. It juxtaposes a block of Paleozoic carbonate rock overlain by a minimal thickness of Tertiary rocks (to the south) against the Miocene volcanic section of Yucca Mountain (to the north). Alluvial geomorphic surfaces compose the bulk of Quaternary surficial units in the Yucca Mountain region. Deposits associated with these surfaces include alluvium, colluvium, and minor eolian and debris-flow sediments. Photogeologic and field studies locally have identified subtle fault scarps that offset these surfaces, and other evidence of Quaternary fault activity. Purpose: This geologic map was constructed to provide the structural and stratigraphic framework for a saturated-zone groundwater model for the Yucca Mountain Project site area. Supplemental_Information: Topographic base from these U.S. Geological Survey 1:24,000-scale digital line graph (DLG) quadrangles: East of Beatty Mountain, Topopah Spring NW, Topopah Spring, Jackass Flats, Striped Hills, Crater Flat, Busted Butte, Big Dune, Amargosa Valley, South of Amargosa Valley, Ashton, Beatty Mountain, Carrara Canyon, Lees Camp, Leeland, Skeleton Hills. 50,000-ft grid based on Nevada State Plane coordinates. Contour interval is 40 ft. DLG's were clipped to fit into the area of interest. Township and Range boundaries from U.S. Geological Survey 1:100,000-scale Digital Line Graph data for the Beatty quadrangle. Roads are from the DOE/OCRWM/YMSCO database, coverage ROADNYES, reference G97558, based on U.S. Census Bureau, 1:100,000-scale TIGER data for Nye County, Nevada. 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: -116.629 East_Bounding_Coordinate: -116.287 North_Bounding_Coordinate: 36.973 South_Bounding_Coordinate: 36.566 Keywords: Theme: Theme_Keyword_Thesaurus: Glossary of Geology, American Geological Institute Theme_Keyword: Neogene extensional faults Theme_Keyword: Neogene strike-slip faults Theme_Keyword: pre-Tertiary thrust faults Theme_Keyword: Miocene calderas Theme_Keyword: southwest Nevada volcanic field Theme_Keyword: nonmarine sedimentary basins Theme_Keyword: Tertiary and Quaternary basins Theme_Keyword: Miocene densely welded tuffs Theme_Keyword: Yucca Mountain Project Theme_Keyword: U.S. Department of Energy Theme_Keyword: U.S. Geological Survey Theme_Keyword: caldera boundaries Theme_Keyword: cross sections Theme_Keyword: geologic map Theme_Keyword: boreholes Theme_Keyword: saturated-zone hydrologic flow model Theme_Keyword: Claim Canyon caldera Theme_Keyword: Timber Mountain caldera complex Theme_Keyword: Belted Range thrust Theme_Keyword: Specter Range thrust Theme_Keyword: CP thrust Theme_Keyword: gravity fault Theme_Keyword: Highway 95 fault Theme_Keyword: Tiva Canyon Tuff Theme_Keyword: Topopah Spring Tuff Theme_Keyword: Paintbrush Group Theme_Keyword: Yucca Mountain Tuff Theme_Keyword: bedded tuffs Theme_Keyword: Pah Canyon Tuff Theme_Keyword: rhyolite of Delirium Canyon Theme_Keyword: tuff of Pinyon Pass Theme_Keyword: rhyolite of Comb Peak Theme_Keyword: rhyolite of Vent Pass Theme_Keyword: rhyolite of Waterpipe Butte Theme_Keyword: rhyolite of Pinnacles Ridge Theme_Keyword: Beatty Wash Formation Theme_Keyword: lavas of Dome Mountain Theme_Keyword: rhyolite of Shoshone Mountain Theme_Keyword: basalt of Kiwi Mesa Theme_Keyword: Rocket Wash tuff Theme_Keyword: Lathrop Wells cinder cone Theme_Keyword: Timber Mountain Group Theme_Keyword: Ammonia Tanks Tuff Theme_Keyword: Rainier Mesa Tuff Theme_Keyword: rhyolite of Flourspar Canyon Theme_Keyword: rhyolite of Windy Wash Theme_Keyword: Tram Tuff Theme_Keyword: tuff of Yucca Flat Theme_Keyword: Lithic Ridge Tuff Theme_Keyword: older tuffs of USW-G1 Theme_Keyword: Crater Flat Group Theme_Keyword: Bullfrog Tuff Theme_Keyword: Prow Pass Tuff Theme_Keyword: rhyolite of Prospector Pass Theme_Keyword: Wahmonie Formation Theme_Keyword: Calico Hills Formation Theme_Keyword: Johnnie Formation Theme_Keyword: Carrara Formation Theme_Keyword: Bonanza King Formation Theme_Keyword: Nopah Formation Theme_Keyword: Pogonip Group Theme_Keyword: Eureka Quartzite Theme_Keyword: Ely Springs Dolomite Theme_Keyword: Lone Mountain Dolomite Theme_Keyword: Roberts Mountains Formation Theme_Keyword: rocks of Calico Mines Theme_Keyword: Eleana Formation Theme_Keyword: Chainman Shale Theme_Keyword: Tertiary Theme_Keyword: rocks of Pavits Spring Theme_Keyword: rocks of Winapi Wash Theme_Keyword: Quaternary basalts Theme_Keyword: Basin and Range province Theme_Keyword: Walker Lane belt Theme_Keyword: Windy Wash fault Theme_Keyword: Solitario Canyon fault Theme_Keyword: Iron Ridge fault Theme_Keyword: Paintbrush Canyon fault Theme_Keyword: Bare Mountain fault Theme_Keyword: Stagecoach Road fault Place: Place_Keyword_Thesaurus: U.S. Board on Geographic Names (BGN) Geographic Names Information System (GNIS) Place_Keyword: Yucca Mountain Place_Keyword: Nye County, Nevada Place_Keyword: Crater Flat Place_Keyword: Calico Hills Place_Keyword: Jackass Flats Place_Keyword: Little Skull Mountain Place_Keyword: Striped Hills Place_Keyword: Skeleton Hills Place_Keyword: Amargosa Desert Place_Keyword: Nevada Test Site Place_Keyword: Black Marble Place_Keyword: Fortymile Canyon Place_Keyword: Shoshone Mountain Place_Keyword: Chocolate Mountain Place_Keyword: Comb Peak Place_Keyword: Claim Canyon Place_Keyword: Windy Wash Place_Keyword: Prow Pass Place_Keyword: Pinnacles Ridge Place_Keyword: Beatty Wash Place_Keyword: Dome Mountain Place_Keyword: Rock Valley Place_Keyword: Steve's Pass Place_Keyword: Lathrop Wells Cone Access_Constraints: None Use_Constraints: Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Christopher J. Potter Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: Denver Federal Center, MS-939 Address: Box 25046 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (303) 236-1735 Contact_Electronic_Mail_Address: cpotter@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: graphic representation of map layout Browse_Graphic_File_Type: PDF Data_Set_Credit: Bedrock geology mapped by Christopher J. Potter, Robert P. Dickerson, Donald S. Sweetkind, Ronald M. Drake II, Christopher J. Fridrich, and Warren C. Day, 1997-1998, and compiled from data sources cited below. Surficial geology mapped by Emily M. Taylor in 1998, and compiled from data sources cited below. Geologic contacts and faults digitized by Ronald M. Drake II, Carma A. San Juan, and Emily M. Taylor. Native_Data_Set_Environment: ARC/INFO version 8.0.2 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Part of the database consists of newly generated data (mapped or interpreted contacts and faults) that were compiled on mylar base maps and then in AutoCAD before being imported to ARC/INFO. Part of the database was compiled from preexisting digital data and combined in AutoCAD before being imported to ARC/INFO. Frequency tests were run on the arc and polygon labels to ensure that no features are unlabeled. The attributes have been checked by both the authors and the reviewers for agreement with published maps, unpublished field mapping, and preliminary drafted versions of the map. The attribute data in the data set should be taken as an accurate representation of the authors' geologic interpretations. Logical_Consistency_Report: 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 1:50,000. All coverages were cleaned and built in ARC/INFO (version 8.0.2) to ensure a logical consistency that is topologically clean. Completeness_Report: This dataset includes only the coverages pertaining to the geologic map. Any marginalia on the printed map (explanation of map symbols, and so forth) are not included. This map was produced to be used at 1:50,000 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 20 meters on a side. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The estimated horizontal positional accuracy of the data is 65 meters. All data used from published and unpublished digital sources are limited by the accuracy of that data. Attempts were made to verify the accuracy of these data by comparison to published topographic data and overlap with other digital data. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Ackermann, H.D. Originator: Mooney, W.D. Originator: Snyder, D.B. Originator: Sutton, V.D. Publication_Date: 1988 Title: Preliminary interpretation of seismic-refraction and gravity studies west of Yucca Mountain, Nevada and California Series_Information: Series_Name: U.S. Geological Survey Bulletin Issue_Identification: 1790 Publication_Information: Publication_Place: Washington, D.C. Publisher: U.S. Geological Survey Other_Citation_Details: in Carr, M.D., and Yount, J.C., eds., 1988, Geologic and hydrologic investigations of a potential nuclear waste disposal site at Yucca Mountain, southern Nevada Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1988 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Ackermann and others, 1988 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary basins Source_Information: Source_Citation: Citation_Information: Originator: Bath, G.D. Originator: Jahren, C.E. Publication_Date: 1984 Title: Interpretations of magnetic anomalies at a potential repository site located in the Yucca Mountain Area, Nevada Test Site Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 84-120 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey 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: Bath and Jahren, 1984 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary basins Source_Information: Source_Citation: Citation_Information: Originator: Blakely, R.J. Originator: Langenheim, V.E. Originator: Ponce, D.A. Originator: Dixon, G.L. Publication_Date: 2000 Title: Aeromagnetic survey of the Amargosa Desert, Nevada and California--A tool for understanding near-surface geology and hydrology Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 00-188 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey 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: Blakely and others, 2000 Source_Contribution: Geophysical data and interpretations guiding fault interpretation beneath Quaternary basins Source_Information: Source_Citation: Citation_Information: Originator: Brocher, T.M. Originator: Carr, M.D. Originator: Fox, K.F., Jr. Originator: Hart, P.E. Publication_Date: 1993 Title: Seismic reflection profiling across Tertiary extensional structures in the eastern Amargosa Desert, southern Nevada, Basin and Range province Series_Information: Series_Name: Geological Society of America Bulletin Issue_Identification: v. 105 Publication_Information: Publication_Place: Boulder, Colorado Publisher: Geological Society of America Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Brocher and others, 1993 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary basins Source_Information: Source_Citation: Citation_Information: Originator: Burchfiel, B.C. Publication_Date: 1966 Title: Reconnaissance geologic map of the Lathrop Wells 15-minute quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Geologic Investigations Series Map Issue_Identification: I-474 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:62,500 Type_of_Source_Media: pamphlet, map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1966 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Burchfiel, 1966 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Byers, F.M., Jr. Originator: Carr, W.J. Originator: Christiansen, R.L. Originator: Lipman, P.W. Originator: Orkild, P.P. Originator: Quinlivan, W.D. Publication_Date: 1976 Title: Geologic map of the Timber Mountain caldera area, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-891 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:48,000 Type_of_Source_Media: pamphlet, map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1976 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Byers and others, 1976 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Christiansen, R.L. Originator: Lipman, P.W. Publication_Date: 1965 Title: Geologic map of the Topopah Spring NW quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Geologic Quadrangle Map Issue_Identification: GQ-444 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1965 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Christiansen and Lipman, 1965 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Cole, J.C. Publication_Date: 1997 Title: Major structural controls on the distribution of pre-Tertiary rocks, Nevada Test Site vicinity, southern Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 97-533 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:100,000 Type_of_Source_Media: paper, map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1997 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Cole, 1997 Source_Contribution: Thrust fault locations Source_Information: Source_Citation: Citation_Information: Originator: Cole, J.C. Originator: Cashman, P.H. Publication_Date: 1998 Title: Geologic map of Paleozoic rocks in the Calico Hills, Nevada Test Site, southern Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 98-101 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:6,000 Type_of_Source_Media: paper, map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Cole and Cashman, 1998 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Day, W.C. Originator: Dickerson, R.P. Originator: Potter, C.J. Originator: Sweetkind, D.S. Originator: San Juan, C.A. Originator: Drake, R.M. II Originator: Fridrich, C.J. Publication_Date: 1998 Title: Bedrock geologic map of the Yucca Mountain area, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Geologic Investigations Series Map Issue_Identification: I-2627 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: pamphlet, map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Day and others, 1998 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Day, W.C. Originator: Potter, C.J. Originator: Sweetkind, D.S. Originator: Dickerson, R.P. Originator: San Juan, C.A. Publication_Date: 1998 Title: Bedrock geologic map of the central block area, Yucca Mountain, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-2601 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:6,000 Type_of_Source_Media: pamphlet, map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Day and others, 1998 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Dickerson, R.P. Originator: Drake, R.M. II Publication_Date: 1998 Title: Geologic map of the Paintbrush Canyon area, Yucca Mountain, Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 97-783 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:6,000 Type_of_Source_Media: paper, map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Dickerson and Drake, 1998 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Faulds, J.E. Originator: Bell, J.W. Originator: Feuerbach, D.L. Originator: Ramelli, A.R. Publication_Date: 1994 Title: Geologic map of the Crater Flat area, Nevada Series_Information: Series_Name: Nevada Bureau of Mines and Geology Issue_Identification: Map 101 Publication_Information: Publication_Place: Reno, Nevada Publisher: Nevada Bureau of Mines and Geology Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1994 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Faulds and others, 1994 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Frizzell, V.A., Jr. Originator: Shulters, J. Publication_Date: 1990 Title: Geologic map of the Nevada Test Site, southern Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-2046 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:100,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1990 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Frizzell and Shulters, 1990 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Greenhaus, M.R. Originator: Zablocki, C.J. Publication_Date: 1982 Title: A Schlumberger resistivity survey of the Amargosa Desert, southern Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 82-897 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1982 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Greenhaus and Zablocki, 1982 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary basins Source_Information: Source_Citation: Citation_Information: Originator: Healey, D.L. Originator: Harris, R.N. Originator: Ponce, D.A. Originator: Oliver, H.W. Publication_Date: 1987 Title: Complete Bouguer gravity map of the Nevada Test Site and vicinity, Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 87-506 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:100,000 Type_of_Source_Media: paper, map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1987 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Healey and others, 1987 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary basins Source_Information: Source_Citation: Citation_Information: Originator: Kane, M.F. Originator: Bracken, R.E. Publication_Date: 1983 Title: Aeromagnetic map of Yucca Mountain and surrounding regions, southwest Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 83-616 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Type_of_Source_Media: map, paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1983 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Kane and Bracken, 1983 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary cover Source_Information: Source_Citation: Citation_Information: Originator: Langenheim, V.E. Originator: Ponce, D.A. Originator: Oliver, H.W. Originator: Sikora, R.F. Publication_Date: 1993 Title: Gravity and magnetic study of Yucca Wash, southwest Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 93-586-A Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Langenheim and others, 1993 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary cover Source_Information: Source_Citation: Citation_Information: Originator: Lipman, P.W. Originator: McKay, E.J. Publication_Date: 1965 Title: Geologic map of the Topopah Spring SW quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Geologic Quadrangle Map Issue_Identification: GQ-439 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1965 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Lipman and McKay, 1965 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Maldonado, Florian Publication_Date: 1985 Title: Geologic map of the Jackass Flats area, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-1519 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:48,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1985 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Maldonado, 1985 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: McCafferty, A.E. Originator: Grauch, V.J.S. Publication_Date: 1997 Title: Aeromagnetic and gravity anomaly maps of the southwestern Nevada volcanic field, Nevada and California Series_Information: Series_Name: U.S. Geological Survey Geophysical Investigations Map Issue_Identification: GP-1015 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:250,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1997 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: McCafferty and Grauch, 1997 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary basins Source_Information: Source_Citation: Citation_Information: Originator: McKay, E.J. Originator: Sargent, K.A. Publication_Date: 1970 Title: Geologic map of the Lathrop Wells quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Geologic Quadrangle Map Issue_Identification: GQ-883 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1970 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: McKay and Sargent, 1970 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary basins Source_Information: Source_Citation: Citation_Information: Originator: McKay, E.J. Originator: Williams, W.P. Publication_Date: 1964 Title: Geology of the Jackass Flats quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Geologic Quadrangle Map Issue_Identification: GQ-368 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1964 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: McKay and Williams, 1964 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Monsen, S.A. Originator: Carr, M.D. Originator: Reheis, M.C. Originator: Orkild, P.P. Publication_Date: 1992 Title: Geologic map of Bare Mountain, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-2201 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1992 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Monsen and others, 1992 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Orkild, P.P. Originator: O'Connor, J.T. Publication_Date: 1970 Title: Geologic map of the Topopah Spring quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Geologic Quadrangle Map Issue_Identification: GQ-849 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1970 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Orkild and O'Connor, 1970 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Ponce, D.A. Publication_Date: 1996 Title: Interpretive geophysical fault map across the central block of Yucca Mountain, Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 96-285 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey 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: Ponce, 1996 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary cover Source_Information: Source_Citation: Citation_Information: Originator: Ponce, D.A. Originator: Harris, R.N. Originator: Oliver, H.W. Publication_Date: 1988 Title: Isostatic gravity map of the Nevada Test Site and vicinity, Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 88-664 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:100,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1988 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Ponce and others, 1988 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary basins Source_Information: Source_Citation: Citation_Information: Originator: Ponce, D.A. Originator: Langenheim, V.E. Publication_Date: 1994 Title: Preliminary gravity and magnetic models across Midway Valley and Yucca Wash, Yucca Mountain, Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 94-572 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1994 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Ponce and Langenheim, 1994 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary cover Source_Information: Source_Citation: Citation_Information: Originator: Ponce, D.A. Originator: Langenheim, V.E. Originator: Sikora, R.F. Publication_Date: 1993 Title: Gravity and magnetic data of Midway Valley, southwest Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 93-540-A Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Ponce and others, 1993 Source_Contribution: Geophysical data guiding fault interpretation beneath Quaternary basins Source_Information: Source_Citation: Citation_Information: Originator: Sargent, K.A. Originator: McKay, E.J. Originator: Burchfiel, B.C. Publication_Date: 1970 Title: Geologic map of the Striped Hills quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Geologic Quadrangle Map Issue_Identification: GQ-882 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1970 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Sargent and others, 1970 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Sargent, K.A. Originator: Stewart, J.H. Publication_Date: 1971 Title: Geologic map of the Specter Range NW quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Geologic Quadrangle Map Issue_Identification: GQ-884 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1971 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Sargent and Stewart, 1971 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Scott, R.B. Publication_Date: 1996 Title: Preliminary geologic map of southern Yucca Mountain, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 92-266 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:12,000 Type_of_Source_Media: paper, map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Scott, 1996 Source_Contribution: Bedrock geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Simonds, F.W. Originator: Whitney, J.W. Originator: Fox, K.F. Originator: Ramelli, A.R. Originator: Yount, J.C. Originator: Carr, M.D. Originator: Menges, C.M. Originator: Dickerson, R.P. Originator: Scott, R.B. Publication_Date: 1995 Title: Map showing fault activity in the Yucca Mountain area, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-2520 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1995 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Simonds and others, 1995 Source_Contribution: Faults with Quaternary displacement Source_Information: Source_Citation: Citation_Information: Originator: Swadley, WC Publication_Date: 1983 Title: Map showing surficial geology of the Lathrop Wells quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-1361 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:48,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1983 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Swadley, 1983 Source_Contribution: Surficial geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Swadley, WC Originator: Carr, W.J. Publication_Date: 1987 Title: Geologic map of the Quaternary and Tertiary deposits of the Big Dune quadrangle, Nye County, Nevada, and Inyo County, California Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-1767 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:48,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1987 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Swadley and Carr, 1987 Source_Contribution: Surficial geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Swadley, WC Originator: Hoover, D.L. Publication_Date: 1989 Title: Geologic map of the surficial deposits of the Jackass Flats quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-1994 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1989 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Swadley and Hoover, 1989a Source_Contribution: Surficial geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Swadley, WC Originator: Hoover, D.L. Publication_Date: 1989b Title: Geologic map of the surficial deposits of the Tonopah Spring quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-2018 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:24,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1989 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Swadley and Hoover, 1989b Source_Contribution: Surficial geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Swadley, WC Originator: Parrish, L.D. Publication_Date: 1988 Title: Surficial geologic map of the Bare Mountain quadrangle, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-1826 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:48,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1988 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Swadley and Parrish, 1988 Source_Contribution: Surficial geologic contacts Source_Information: Source_Citation: Citation_Information: Originator: Wright, L. Originator: Troxel, B.W. Publication_Date: 1993 Title: Geologic map of the central and northern Funeral Mountains and adjacent area, Death Valley region, southern California Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-2305 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: scale 1:48,000 Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Wright and Troxel, 1993 Source_Contribution: Bedrock geologic contacts Process_Step: Process_Description: Bedrock geologic mapping and compilation of new mapping in AutoCAD. Process_Date: 1997 to 1998 Process_Step: Process_Description: Digitize and compile bedrock mapping from previously published sources, and modify these based on new mapping, using AutoCAD. Process_Date: 1997 to 1998 Process_Step: Process_Description: Interpret, digitize, and compile geophysically inferred faults, using AutoCAD. Process_Date: 1997 to 1998 Process_Step: Process_Description: Compile surficial geology on 1:24,000-scale orthophotoquad maps, combining new mapping with previously published sources. Process_Date: 1998 Process_Step: Process_Description: Digitize surficial geology using AutoCAD. Process_Date: 1998 Process_Step: Process_Description: Review of data by M. Chornack. Process_Date: 1998 Process_Step: Process_Description: Review of data by D. O'Leary. Process_Date: 1998 Process_Step: Process_Description: Review of data by M. Hudson. Process_Date: 1998 Process_Step: Process_Description: Review of data by W.R. Page. Process_Date: 1998 Process_Step: Process_Description: Review of data by C. Menges. Process_Date: 1998 Process_Step: Process_Description: Review of data by D. Buesch. Process_Date: 1998 Process_Step: Process_Description: Review of data by M. Fahy. Process_Date: 1999 Process_Step: Process_Description: Edit map in AutoCAD to address review comments. Process_Date: 1998 to 1999 Process_Step: Process_Description: Import digital map elements into ARC/INFO. Process_Date: 1999 Process_Step: Process_Description: Edits made in ARCEDIT to existing data include: unclosed polygons closed, incorrectly attributed polygons relabeled, incorrect structural symbols fixed, fault attributes and displacement symbols edited, and global changes made to colors. Process_Date: 1999 to 2002 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: .9996 Longitude_of_Central_Meridian: -116.46 Latitude_of_Projection_Origin: 0.0 False_Easting: 0.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 65 Ordinate_Resolution: 65 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------#-------------4----------5---------B---------\ 29-------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------#-------------4----------5---------B---------\ 21-------ID-----------4----------5---------B---------\ COVERAGE-----FEATURE-----DESCRIPTION Items/Attributes----------Values plate1-----lines-----cultural linework (roads, township and range, NTS boundary, map border and tics) ITEM: layer DESCRIPTION: ROADS_FINAL Roads in study area TOWN_RANGE Township and range boundaries SECTIONS_100K Township and range section lines NTS Nevada Test Site boundary BORDER Map border TICS_STATE_PLANE Nevada State Plane graticules TICS_LAT_LONG Latitude and longitude graticules ball_bar-----lines--------displacement symbols on faults ball_bar-----polygons-----displacement symbols on faults ITEM: ssym DESCRIPTION: 1 Number corresponding to a shadeset symbol szgeol-----polygons-------geologic units ITEMS: DESCRIPTION: MAP_UNIT Lithostratigraphic symbols UNIT_DESCRIPTION Description of lithostratigraphic symbols SSYM Number corresponding to a shadeset symbol (Values for the coverage items are presented in table format below) MAP_UNIT...UNIT_DESCRIPTION... SSYM CZw Wood Canyon Formation 694 Cb Bonanza King Formation 461 Cc Carrara Formation 601 Cn Nopah Formation 518 Cz Zabriskie Quartzite 810 DSd Dolomite 55 Dc Dolomite limestone and sandy dolomite 52 MDs Clastic sedimentary rocks (includes Eleana) 332 Mc Chainman Shale 179 Ou Sedimentary rocks, undivided (Ely Sprs. Eureka Pogonip) 238 Qa Alluvium (Holocene) 748 Qam Alluvium (late and middle Pleistocene) 705 Qao Older alluvium (middle and early Pleistocene) 501 Qay Younger alluvium (Holocene and late Pleistocene) 575 Qay/Qam mantle of Qay over Qam 705 Qay/Qem mantle of Qay over Qem 767 Qbo Older Quaternary basalt 98 Qby Younger Quaternary basalt 130 Qe Eolian deposits (Holocene to middle Pleistocene) 759 Qem Eolian-colluvial ramp deposits (Holocene-middle Pleis.) 767 Qem/Qao mantle of Qem over Qao 501 Qeo Older eolian sand (middle to early Pleistocene) 576 Qey Eolian sand and fragments (Holocene and late Pleistocene) 715 Qey/Qam mantle of Qey over Qam 705 Qey/Qeo mantle of Qey over Qeo 576 Qsd Spring deposits (Holocene to middle Pleistocene) 681 Tac Calico Hills Formation 184 Tbo Older Tertiary basalts (Miocene) 129 Tby Younger Tertiary basalt of Crater Flat (Pliocene) 372 Tcb Bullfrog Tuff 509 Tcp Prow Pass Tuff 422 Tcr Rhyolite of Prospector Pass 151 Tcs Pre-Bullfrog Tuff bedded tuff 322 Tct Tram Tuff 152 Tfb Beatty Wash Formation 632 Tfd Lavas of Dome Mountain 119 Tfs Rhyolite of Shoshone Mountain 633 Tgc Conglomerates, fanglomerates, and rock-avalanche breccia 652 Ti Intrusions (Miocene) 217 Tma Ammonia Tanks Tuff 721 Tmb Rhyolite of Waterpipe Butte 111 Tmp Rhyolite of Pinnacles Ridge 707 Tmr Rainier Mesa Tuff 124 Tmw Rhyolite of Windy Wash 905 Tpbt Bedded tuff (Paintbrush Gp.) 116 Tpc Tiva Canyon Tuff 901 Tpcy Tuff of Pinyon Pass 732 Tpd Rhyolite of Delirium Canyon 114 Tpk Rhyolite of Comb Peak 154 Tpp Pah Canyon Tuff 542 Tpr Rhyolite lavas, undivided (Paintbrush Gp.) 155 Tpt Topopah Spring Tuff 336 Tpv Rhyolite of Vent Pass 554 Tpx Paintbrush Group tuffs, undivided (flt zn: tectonically mixed) 577 Tpy Yucca Mountain Tuff 514 Trx Rock-avalanche breccia of southern Crater Flat (Miocene) 303 Ts Older sedimentary rocks, undivided (Miocene and Oligocene 387 Ttr Rocket Wash Tuff of Thirsty Canyon Group (Miocene) 555 Tvo Older volcanic rocks, undivided (Miocene) 909 Tvx Intracaldera and caldera margin megabreccia and mesobreccia 541 Tvy Younger volcanic rocks (Pliocene to Miocene) 527 Tw Wahmonie Formation 304 Zs Stirling Quartzite 494 szlines-----lines-----attributed with ITEM layer as follows: ITEM: layer DESCRIPTION: BORDER_50K_MAP Extent of study area CALDERA Structural Boundary of Claim Canyon Caldera CONTACT Geologic contact - exposed or well constrained CONTACT_APPROX Geologic contact - approximately located CONTACT_CONCEALED Geologic contact - concealed beneath Quaternary cover or poorly exposed CONTACT_Q Geologic contact of Quaternary aged deposits CROSS_SECTION_LINES Location of cross sections A-A', B-B', C-C', and D-D' FAULT Fault - exposed or well constrained FAULT_APPROX Fault - approximately located FAULT_INFER_GEOL Fault - concealed and inferred beneath Quaternary cover FAULT_INFER_GP Fault - concealed beneath Quaternary cover and inferred from geophysical data FAULT_PRE_TERTIARY_THRUST Thrust fault - pre-Tertiary age, exposed or well constrained FAULT_PRE_TERTIARY_THRUST_INFER Thrust fault - pre-Tertiary age, concealed and inferred beneath Quaternary cover or poorly exposed FAULT_LOW_ANGLE_NORMAL Gently dipping normal fault SCARP_AL Fault scarps in Quaternary deposits SYMBOL_CALC_DIP Symbols displaying strike and dip of bedrock estimated using 3-point method SYMBOL_FLT_FLD Symbols displaying relative horizontal movement (paired arrows) on faults, teeth on reverse faults, and queries (uncertain) fault locations), and fold axes SYMBOL_FOLIATION Symbols displaying strike and dip of compaction foliation SYMBOL_HORIZ_BD Symbols displaying horizontal bedding SYMBOL_OVRTRN_BD Symbols displaying overturned bedding SYMBOL_STRIKE_DIP Symbols displaying strike and dip of bedding SYMBOL_VERT_BED Symbols displaying vertically dipping bedding UNIT_LABELS Line leaders from map unit to text describing bedrock geologic units UNIT_LABELS_Q Line leaders from map unit to text describing geologic units of Quaternary age szlines-----annotation-----Text for geologic units, borehole and map symbol labels subclass: anno.dxf Description Level 1 geology labels 3 fault names 4 cross section trace labels 5 borehole labels 6 foliation labels 7 measured strike and dip labels 8 calculated strike and dip labels 9 overturned bedding labels 10 queries symbols(?)on fault traces szlines-----points-----borehole locations ITEM: layer DESCRIPTION: BOREHOLES_1996 Location of selected bore holes in study area Topo24k_pot-----arcs-----topographic base ITEMS: DESCRIPTION: elev_ft elevation of line index200 1 if line is a 200 ft index contour, otherwise 0 Entity_and_Attribute_Detail_Citation: None Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey, Central Publications Group Address: Box 25046 Address: Denver Federal Center, MS-902 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-5486 Distribution_Liability: Although these digital spatial data have been subjected to rigorous review and are substantially complete, they are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from their authorized or unauthorized use. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE and Shape File Format Format_Version_Number: ARC/INFO version 8.0.2 File_Decompression_Technique: gzip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: None Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: USGS Information Services Address: Box 25286 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Resource_Description: I-2755 (Map-on-Demand) Distribution_Liability: None Standard_Order_Process: Non-digital_Form: Available as one printed sheet plus one 44-page pamphlet. Order from USGS at the address listed above. Fees: Contact USGS at the address listed above. Metadata_Reference_Information: Metadata_Date: 20021122 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Christopher J. Potter Contact_Organization: U.S Geological Survey Contact_Address: Address_Type: mailing address Address: Box 25046 Address: Denver Federal Center, MS-939 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-1735 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Use_Constraints: None