Digital Bedrock Geologic Map Database of the Beatty 30 X 60-Minute Quadrangle, Nevada and California

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Frequently anticipated questions:

What does this data set describe?

Digital Bedrock Geologic Map Database of the Beatty 30 X 60-Minute Quadrangle, Nevada and California
This geologic map database is a bedrock compilation of the Beatty 30'x 60' quadrangle in southern Nevada and adjoining parts of California. The database represents a new compilation at 1:100,000-scale of the southern part of the southwestern Nevada volcanic field and Paleozoic and late Precambrian sedimentary rocks in Bare Mountain and the Funeral Mountains. The map area includes the entire region around Yucca Mountain, the proposed national high-level nuclear waste repository, and the eastern part of Death Valley National Park. A major epithermal disseminated gold deposit is being mined at Ladd Mountain, in the southeastern Bullfrog Hills, and the geology of numerous other areas of mineralization in the Bullfrog Hills and adjoining Bare Mountain is depicted. A major part of the map area is included within the Nevada Test Site (previously geologically mapped at 1:24,000-scale, the new compilation reflects numerous recent studies of stratigraphy and structure), and parts of the Nellis Air Force Base Bombing Range.
  1. How might this data set be cited?
    Carr, Michael D., Sawyer, David A., Nimz, Kathryn, Maldonado, Florian, and Swadley, WC, 1996, Digital Bedrock Geologic Map Database of the Beatty 30 X 60-Minute Quadrangle, Nevada and California: U.S. Geological Survey Open-File Report 96-291.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -117.00
    East_Bounding_Coordinate: -116.00
    North_Bounding_Coordinate: 37.00
    South_Bounding_Coordinate: 36.50
  3. What does it look like? (PDF)
    PDF representation of geologic map plate
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 1996
    publication date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: map
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a vector data set.
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Universal Transverse Mercator
      UTM_Zone_Number: 11
      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: -117
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000
      False_Northing: 0
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest unknown
      Ordinates (y-coordinates) are specified to the nearest unknown
      Planar coordinates are specified in meters
  7. How does the data set describe geographic features?
    Oriented symbols (strike and dip information) (Source: OFR-96-291)
    Point type (Source: OFR-96-291)
    beddingBedding orientation
    flat beddingBedding whose dip is practically zero
    foliationFoliation orientation
    horz foliationFoliation whose dip is zero
    ot beddingOverturned bedding
    vert beddingBedding whose dip is 90
    vert foliation and beddingFoliation and bedding whose dips are both 90 degrees
    Dip or trend of bedding/foliation (Source: OFR-96-291)
    Range of values
    Strike of bedding (Source: OFR-96-291)
    Range of values
    Line coverage of caldera features (Source: OFR-96-291)
    Line type (Source: OFR-96-291)
    caldera-struct-margin, approx locaStructural caldera margin whose position is not precisely known
    caldera-struct-margin, certainObserved structural caldera margin
    caldera-topo-well, approx. locatedTopographic wall of caldera whose location is not precisely known
    caldera-topo-wall, certainObserved topographic wall of caldera
    margin-uncertain, inferred, queriedMargin of caldera whose position is inferred and uncertain
    Base map- culture separate (Source: OFR-96-291)
    Line type (Source: OFR-97-291)
    map boundaryLocation of map boundary
    Fold axes (Source: OFR-96-291)
    Line type (Source: OFR-96-291)
    f.a., anticline, approx. locatedAnticlinal fold axis whose position is not precisely known
    f.a., anticline, certainAnticlinal fold axis whose position is certain
    f.a., minor plunging anticline, appMinor plunging anticlinal fold axis whose position is not precisely known
    f.a., minor plunging overturned anticlineMinor plunging anticlinal fold axis whose position is certain
    f.a., minor plunging overturned anticlineOverturned minor plunging anticlinal fold axis
    f.a., minor plunging syncline, approx. locatedMinor plunging synclinal fold axis whose positoin is not precisely known
    f.a., minor plunging syncline, certainMinor plunging synclinal fold axis whose position is certain
    f.a., overturned anticline, approx. locatedOverturned anticlinal fold axis whose position is not precisely known
    f.a., overturned syncline, approx. locatedOverturned synclinal fold axis whose position is not precisely known
    f.a., plunging anticline, approx. locatedPlunging anticlinal fold axis whose position is not precisely known
    f.a., overturned syncline, certainOverturned synclinal fold axis whose position is certain
    f.a., plunging anticline, certainPlunging anticlinal fold axis whose position is certain
    f.a., plunging overturned syncline, certainPlunging overturned synclinal fold axis whose position is certain
    f.a., syncline, approx. locatedSynclinal fold axis whose position is not precisely known
    Geologic map units (Source: OFR-96-291)
    Polygon type (Source: OFR-96-291)
    QTaAlluvial-fan, fluvial, and colluvial deposits, undivided
    QeEolian sand and silt, undivided
    QpPlaya deposits
    QtTravertine (Holocene and Pleistocene)
    QTpOlder playa, marsh, and spring deposits (Pleistocene? and Pliocene)
    QbyYounger Quaternary basalt (Pleistocene)
    QboOlder Quaternary basalt (Pleistocene)
    TypPliocene and youngest Miocene basalt (Pliocene)
    TgfFuneral Formation (Pliocene and Late Miocene?)
    TgyYounger sedimentary deposits (Pliocene and Miocene)
    TgfcFurnace Creek Formation (Late Miocene)
    TgoGravel of Oasis Valley (Pliocene and Late Miocene)
    TspSpearhead Member of Stonewall Flat Tuff (Miocene)
    TybThirsty Canyon and younger basalts (Miocene)
    TgmLate synvolcanic sedimentary rocks (Miocene)
    TgcCaldera moat-filling sedimentary deposits (Miocene)
    TgyxYounger landslide and sedimentary breccias (Miocene)
    TttTrail Ridge Tuff - Thirsty Canyon Group (Miocene)
    TtpPahute Mesa and Rocket Wash Tuffs - Thirsty Canyon Group (Miocene)
    TfuUpper Fortymile rhyolite lavas (Miocene)
    TftPost-Timber Mountain basaltic rocks (Miocene)
    TfnTrachyte of Donovan Mountain (Miocene)
    TfsRhyolite of Shoshone Mountain (Miocene)
    TfdLavas of Dome Mountain (Miocene)
    TiyYounger intrusive rocks (Miocene)
    TfrRhyolite of Rainbow Mountain (Miocene)
    TfbBeatty Wash Formation (Miocene)
    TflTuff of Leadfield Road
    TffRhyolite of Fleur-de-lis Ranch (Miocene)
    TmaAmmonia Tanks Tuff - Timber Mountain Group (Miocene)
    TmxTimber Mountain landslide breccia - Timber Mountain Group (Miocene)
    TmcRhyolite of Buried Canyon - Timber Mountain Group (Miocene)
    TmtBasalts in Timber Mountain Group - Timber Mountain Group (Miocene)
    TmrRainier Mesa Tuff - Timber Mountain Group (Miocene)
    TmrfRhyolite of Fluorspar Canyon - Timber Mountain Group (Miocene)
    TmnTransitional Timber Mountain rhyolites (Miocene)
    TgnxTransitional Timber Mountain breccia and sedimentary rocks (Miocene)
    TpuPost-Tiva Canyon rhyolites - Paintbrush Group (Miocene)
    TpcTiva Canyon Tuff - Paintbrush Group (Miocene)
    TpxPaintbrush caldera-collapse breccias - Paintbrush Group (Miocene)
    TpyYucca Mountain Tuff - Paintbrush Group (Miocene)
    TpmMiddle Paintbrush Group rhyolites - Paintbrush Group (Miocene)
    TppPah Canyon Tuff - Paintbrush Group (Miocene)
    TptTopopah Spring Tuff - Paintbrush Group (Miocene)
    TacCalico Hills Formation (Miocene)
    TioOlder intrusive rocks (Miocene)
    TwWahmonie Formation (Miocene)
    TwsSalyer Member (Miocene)
    TcpProw Pass Tuff (Miocene)
    TcbBullfrog Tuff - Crater Flat Group (Miocene)
    TcrRhyolites in the Crater Flat Group (Miocene)
    TctTram Tuff (Miocene)
    TgpRocks of Pavits Spring and older sedimentary deposits, undivided (Miocene)
    TgoxOlder landslide and sedimentary breccias (Miocene)
    TrlLithic Ridge Tuff (Miocene)
    TrdDikes of Tram Ridge (Miocene)
    TrrRhyolite of Picture Rock (Miocene)
    TnTunnel Formation (Miocene)
    TqsTuff of Sleeping Butte (Miocene)
    TonOlder tunnel beds (Miocene)
    ToyTuff of Yucca Flat (Miocene)
    TgePrevolcanic sedimentary rocks (Oligocene-Early Miocene)
    TgtTitus Canyon Formation, lower part (Oligocene)
    TKdDiorite dikes (Oligocene-Cretaceous?)
    KgGranitic rocks (Cretaceous)
    dPtTippipah Limestone (Early Permian and Pennsylvanian)
    dMcsChainman Shale and Scotty Wash Quartzite (Early Pennsylvanian and Mississippian)
    MDeEleana Formation (Mississippian and Late Devonian)
    DsfSlope-facies rocks (Devonian)
    DgGuilmette Formation (Late and Middle Devonian)
    DsSimonson Dolomite (Middle Devonian)
    DSlmLone Mountain Dolomite (Early Devonian? and Late Silurian)
    DSslSevy Dolomite and Laketown Dolomite, undivided (Early Devonian and Silurian)
    SrRoberts Mountains Formation (Silurian)
    OesEly Springs Dolomite (Late Ordovician)
    OeEureka Quartzite (Late and Middle Ordovician)
    OpPogonip Group (Middle and Early Ordovician)
    fnNopah Formation (Late Cambrian)
    fbbBanded Mountain Member - Bonanza King Formation (Late and Middle Cambrian)
    fbpPapoose Lake Member - Bonanza King Formation (Late and Middle Cambrian)
    fcCarrara Formation (Middle and Early Cambrian)
    fzZabriskie Quartzite (Early Cambrian)
    fZwWood Canyon Formation (Early Cambrian and Late Proterozoic)
    ZsStirling Quartzite (Late Proterozoic)
    ZjJohnnie Formation (Late Proterozoic)
    YkKingston Peak Formation (Middle Proterozoic)
    YbBeck Spring Dolomite (Middle Proterozoic)
    YcCrystal Spring Formation (Middle Proterozoic)
    XmiMetamorphic and intrusive rocks (Early? Proterozoic)
    Linear geologic features (Source: OFR-96-291)
    Line type (Source: OFR-96-291)
    atten. fault, certainObserved attenuated fault
    atten. fault, concealedConcealed attenuated fault whose position is inferred
    atten. fault, inferredAttenuated fault whose position is inferred
    contact, certainObserved geologic contact
    fault, Quaternary fault, certainObserved Quaternary fault
    fault, Quaternary fault, inferredQuaternary fault whose position is inferred
    fault, approx. locatedFault whose position is not precisely known
    fault, certainObserved fault
    fault, concealedConcealed fault whose position is inferred
    fault, inferredFault whose position is inferred
    map boundary, certainBoundary of mapped area
    normal fault, approx. locatedNormal fault whose position is not precisely known
    normal fault, certainObserved normal fault
    normal fault, concealedConcealed normal fault whose position is inferred
    scratch boundary, certainScratch boundary is used to close off areas with unknown aerial extent for display purposes.
    thrust fault, certainObserved thrust fault
    thrust fault, concealedConcealed thrust fault whose position is inferred
    Geologic map units at specific locations (same attributes as polygon coverage BTY_GEO.PAT) (Source: OFR-96-291)
    Lines and polygons delineating metamorphic zones (Source: OFR-96-291)
    Line type (Source: OFR-96-291)
    contact, certainObserved contact
    fault, certainObserved fault
    metamorphic.facies, approx. locatedMetamorphic facies whose location is not precisely known
    metamorphic.isograd, certainObserved metamorphic isograd

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Michael D. Carr
    • David A. Sawyer
    • Kathryn Nimz
    • Florian Maldonado
    • WC Swadley
  2. Who also contributed to the data set?
    Compilation of the digital database depended on advice and assistance in the use of ALACARTE - ARC/INFO from T.T. Fitzgibbon, C.M. Wentworth, and G.A. Phelps, and Johanna Fenton
  3. To whom should users address questions about the data?
    Carr, Michael D
    Mail Stop 999, USGS
    345 Middlefield Road
    Menlo Park, CA

    650-329-5011 (voice)

Why was the data set created?

Together with the description of map units (btyrep.txt or, and in conjunction with the recently published Nevada Test Site Region map database (Sawyer and others, 1995, USGS Open-File Report-567), the Beatty geologic map database provides the most recent synthesis of the stratigraphy and structural geology of the southwestern Nevada volcanic field, the Nevada Test Site, and the Yucca Mountain site.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 1990 (process 1 of 2)
    The scanned images were vectorized and transformed from scanner coordinates to projection coordinates using digital tics at quadrangle corners and internal locations. The scanned lines were edited interactively using ALACARTE, unit boundaries were tagged as a contact or fault as appropriate, and scanning artifacts visible at 1:100,000 were removed.
    Base map layers were prepared from scale-stable film positives at 100,000 scale, of the U.S. Geological Survey Beatty (1986 edition) topographic map. The base was scanned on a Scitex scanner as four separate layers (culture, drainage, index contours, and intermediate contours). Scanned and vectorized images were transformed from scanner coordinates to projection coordinates using digital tics.
    Date: 16-Aug-2000 (process 2 of 2)
    Creation of original metadata record Person who carried out this activity:
    Jennifer Lenz
    US Geological Survey
    12201 Surise Valley Drive, Mail Stop 918
    Reston, VA

    703-648-6974 (voice)
    703-648-6560 (FAX)
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the observations, including topology?
    The current map database incorporates geologic data from: (1) digitized (by scanning) polygon, fault, and structural attitude layers of the published 1:100,000-scale geologic map of the NTS (Frizzell and Shulters, 1990, and Figure 1a, Sources of Compiled Geologic Data); (2) the digital 1:100,000-scale geologic compilation of the Pahute Mesa 30' by 60' quadrangle (Minor and others, 1993); (3) the recent digital database compilation of the NTS by Sawyer and others (1995), and (4) recent field studies of stratigraphy and structure by the authors and others. Numerous revisions of the of the NTS area were also made by adding new field and stratigraphic data to the published 1:24,000- scale geologic data (see Figure 1b; Sources of Original Geologic Data).

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: none
Use_Constraints: none
  1. Who distributes the data set? (Distributor 1 of 1)
    USGS Information Services
    Box 25286, Denver Federal Center
    Denver, Colorado

    1-888-ASK-USGS (voice)
    1-303-202-4695 (FAX)
  2. What's the catalog number I need to order this data set? US Geological Survey Open-File Report 96-291
  3. What legal disclaimers am I supposed to read?
    This map is preliminary and has not been reviewed for conformity with U. S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U. S. Government. Although these data have been used by the U. S. Geological Survey and have been successfully imported into the data base programs, no warranty expressed or implied, is made by the USGS as to how successfully or accurately the data can be imported into any specific application software running on any specific hardware platform. The fact of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in connection thereby.
    This database, identified as "PRELIMINARY DIGITAL GEOLOGIC MAP DATABASE OF THE BEATTY 30 X 60-MINUTE QUADRANGLE, SOUTHERN NEVADA" 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.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: Faults, depositional contacts, and geologic unit identities, Fold axes, Oriented symbols (strike and dip information) in format ARCE (version 7.x) Size: 8.6
      Network links:
    • Cost to order the data: none

Who wrote the metadata?

Last modified: 05-Feb-2016
Metadata author:
Peter N Schweitzer
USGS Midwest Area
Collection manager, USGS Geoscience Data Clearinghouse,
Mail Stop 954
12201 Sunrise Valley Dr
Reston, VA

703-648-6533 (voice)
703-648-6252 (FAX)
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

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