Digital Geologic Map for Yellowstone National Park, Idaho, Montana, and Wyoming and Vicinity

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Frequently-anticipated questions:


What does this data set describe?

    Title:
    Digital Geologic Map for Yellowstone National Park, Idaho, Montana, and Wyoming and Vicinity
    Abstract:
    The geology coverage was developed from the 1972 USGS Geologic Map of Yellowstone National Park. It contains polygons of bedrock formations, dikes, and faults. Errors in the 1972 map were corrected and an area outside the Park boundary on the west and south was added. Attributes attached to each polygon include a formation code, formation name, formation age, and a generalized unit name. Line attributes include water, contacts, and faults. Updated information includes a break down of Tertiary, and Quaternary volcanic rock units.
    Supplemental_Information:
    Map political location: Yellowstone National Park, Idaho, Montana, and Wyoming Compilation scale: 1:125,000 Original geology compiled in 1972.

    Geospatial data files included in this data set:

    geol83: geologic units, contacts, and faults

  1. How should this data set be cited?

    Christiansen, Robert L., 1999, Digital Geologic Map for Yellowstone National Park, Idaho, Montana, and Wyoming and Vicinity: Open-File Report 99-0174, U.S. Geological Survey, Denver, CO.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -111.25
    East_Bounding_Coordinate: -109.8
    North_Bounding_Coordinate: 45.117
    South_Bounding_Coordinate: 44.000

  3. What does it look like?

    <https://pubs.usgs.gov/of/1999/ofr-99-0174/ofr99174.pdf> (PDF)
    Graphic representation of map layout.

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 1999
    Currentness_Reference: 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. It contains the following vector data types (SDTS terminology):

      • Point (4461)
      • String (11547)
      • GT-polygon composed of chains (4462)

    2. What coordinate system is used to represent geographic features?

      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 12
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: -111.0
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000.
      False_Northing: 0.0

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 50.0
      Ordinates (y-coordinates) are specified to the nearest 50.0
      Planar coordinates are specified in METERS

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    This data set contains 130 polygon distinct attributes and three line attributes.

    The ARC/INFO coverage is: geol83

    The "info" file geol83.pat contains the following attributes unique to this cover that are described below. They are:

    PTYPE		Detailed map unit symbol.
    PTYPE-GEN	Generalized values used for Teriary and
    		older map units.
    SEL		Not currently used.
    SYMB		Not currently used.
    
    The "info" file geol83.patgen contains the attribute "PTYPE-GEN" for the region "GEN" in this cover that is the same as the "PTYPE-GEN" described below.

    The file that contains the polygon attributes and a brief description is: geol83.lup. The file is called geol83pl.dbf as a dbase file for ArcView. This file contains the additional attributes:

    GROUP		Highest ranking group for mapped units.
    SUB-GROUP1	Second ranking group.
    SUB-GROUP2	Third ranking group
    
    The map symbols below are the attribute "PTYPE". Outcrop (polygon) attribute descriptions from the above files are as follows:

    Surficial Deposits (Holocene and Pleistocene)
    Qs	Detrital deposits
    Qh	Hot-spring deposits
    Qhi	Cemented ice-contact deposits localized by hot springs
    Qhe	Hydrothermal-explosion deposits
    Plateau Rhyolite (Pleistocene)
    	Central Plateau Member
    	Qpcp	Pitchstone Plateau flow
    	Qpcg	Grants Pass flow
    	Qpcmf	Moose Falls flow
    	Qpcy	West Yellowstone flow
    	Qpct	Trischman Knob dome
    	Qpck	Douglas Knob dome
    	Qpco	Tuff of Cold Mountain Creek
    	Qpcr	Bechler River flow
    	Qpcs 	Summit Lake flow
    	Qpcf	Solfatara Plateau flow
    	Qpch	Hayden Valley flow
    	Qpcb	Buffalo Lake flow
    	Qpcc	Spring Creek flow
    	Qpcc(?)	Spring Creek(?) flow
    	Qpcn	Nez Perce Creek flow
    	Qpcn(?)	Nez Perce Creek(?) flow
    	Qpcu	Spruce Creek flow
    	Qpcu(?)	Spruce Creek(?) flow
    	Qpce	Elephant Back flow
    	Qpcw	West Thumb flow
    	Qpca	Aster Creek flow
    	Qpcl	Tuff of Bluff Point
    	Qpcm	Mary Lake flow
    	Qpcd	Dry Creek flow
    	Roaring Mountain Member
    	Qprs	Crystal Spring flow
    	Qprg	Gibbon River flow
    	Qpro	Obsidian Cliff flow
    	Qprc	Cougar Creek dome
    	Qprr	Riverside flow
    	Mallard Lake Member
    	Qpm	Mallard Lake flow
    	Obsidian Creek Member
    	Qpoh	Gibbon Hill dome
    	Qpop	Paintpot Hill dome
    	Qpow	Willow Park dome
    	Qpoa	Apollinaris Spring dome
    	Qpol	Landmark dome
    	Qpog	Rhyolite-basalt mixed lavas of Gardner River
    	Qpoz	Rhyolite-basalt mixed lavas of Grizzly Lake
    	Upper Basin Member
    	Qpul	Scaup Lake flow
    	Qpub	Biscuit Basin flow
    	Qpud	Dunraven Road flow
    	Qpuc	Canyon flow
    	Qpus	Tuff of Sulphur Creek
    	Qput	Tuff of Uncle Toms Trail
    Qge	Gerrit Basalt (Pleistocene)
    Qo	Osprey Basalt (Pleistocene)--Includes some gravel
    Qmr	Madison River Basalt (Pleistocene)
    Qf	Falls River Basalt (Pleistocene)
    Qsl	Swan Lake Flat Basalt (Pleistocene)
    Qgc	Basalt of Geode Creek (Pleistocene)
    Qm	Basalt of Mariposa Lake (Pleistocene)
    Qso	Sediments (Pleistocene)--Interlayered with Plateau Rhyolite
    Lava Creek Tuff (Pleistocene)
    	Qylb	Member B
    	Qyla	Member A
    Quf	Undine Falls Basalt (Pleistocene)--Includes some gravel
    Mount Jackson Rhyolite (Pleistocene)
    	Qmh	Mount Haynes flow
    	Qml	Harlequin Lake flow
    	Qmf	Flat Mountain flow
    	Qmw	Wapiti Lake flow
    	Qmm	Moose Creek Butte flow
    	Qmb	Big Bear Lake flow
    Qlc	Lewis Canyon Rhyolite (Pleistocene)
    Qw	Basalt of Warm River (Pleistpcene)
    Island Park Rhyolite (Pleistocene)
    	Qiw	Warm River Butte dome
    Qym	Mesa Falls Tuff (Pleistocene)
    Qtn	Sediments and basalts of the Narrows (Pleistocene)
    Huckleberry Ridge Tuff (Pliocene)
    	Tyhc	Member C
    	Tyhb	Member B
    	Tyha	Member A
    
    Generalized Attributes of Rock Units Older Than The Huckleberry Ridge Tuff; (used for showing all of the volcanic units of Yellowstone National Park in detail and older rocks generalized). These values correspond to the attribute "PTYPE-GEN".

    Tj	Junction Butte Basalt (Pliocene)--Includes some gravel
    Tcc	Conant Creek Tuff (Pliocene)
    Te	Gravel of Mount Everts (Pliocene)
    Thl	Heart Lake Conglomerate (Pliocene)
    Ti      Intrusive Rocks related to the Absaroka
    Volcanic Supergroup (Eocene)
    Tv	Volcanic rocks of the Absaroka Volcanic Supergroup (Eocene)
    Ts	Sedimentary rocks interlayered with Absaroka
    TWMZs	Sedimentary rocks (Paleocene and Mesozoic)
    WPZs	Sedimentary rocks (Paleozoic)
    WPCm	Gneiss and schist, and minor pegmatite, serpentine, and
    	diabase, quartzite, and amphibolite (Precambrian)
    
    Detailed Older Rock Unit Attributes. These values correspond to the attribute "PTYPE".

    Ti	Rhyodacite, quartz latite, quartz monzonite, and
    	granodiorite in the Gallatin Range
    Tid	Dacite intrusive rocks
    Twi	Wiggins Formation To Two Ocean Formation
    Tli	Intrusive rocks of Two Ocean and Langford Formations
    Tl	Langford Formation
    	Tlp     Promontory Member
    	Tlf     Andesite lava flows
    Tt	Trout Peak Trachyandesite
    	Ttp     Pacific Creek Tuff Member
    Tm	Mount Wallace Formation
    	Tms     Slough Creek Tuff Member
    Tch	Crescent Hill Basalt
    Tw	Wapiti Formation
    Ts	Sepulcher Formation
    	Tsf     Fortress Mountain Member
    	Tsd     Daly Creek Member
    	Tlc     Lost Creek Tuff Member
    	Tec     Elk Creek Basalt Member (also a member of Lamar
    		River Formation)
    	Tsc     Nonvolcanic conglomerate, fanglomerate, and breccia facies
    Tlr      Lamar River Formation
    	Tlrf	Andesite flows
    	Tlri	Sulphur Creek stock and associated dikes
    	Tlrb	Bodies of intrusive breccia
    Tc	Cathedral Cliffs Formation
    TKv	Volcanic rocks
    TKp	Pinyon Conglomerate
    Kl	Landslide Creek Formation, Everts Formation, Eagle Sandstone,
    	Telegraph Creek Formation, Cody Shale, and Frontier
    	Sandstone
    Kh	Harebell Formation
    Kb	Bacon Ridge Sandstone
    Kc	Cody Shale
    Kf	Frontier Formation
    Kmk	Mowry Shale, Thermopolis Shale, and Kootenai Formation
    Kmt	Mowry and Thermopolis Formations
    KJm	Cloverly and Morrison(?) Formations
    Jm	Morrison Formation
    Je	Ellis Group
    Js	Sundance and Gypsum Spring Formations
    WTRt	Thaynes(?), Woodside, and Dinwoody Formations
    WTRc	Chugwater and Dinwoody Formations
    Ps	Shedhorn Sandstone
    Pp	Phosphoria Formation and related rocks
    WPPq	Quadrant Sandstone and Amsden Formation
    WPPMt	Tensleep Sandstone and Amsden Formation
    Mm 	Madison Group
    Dot	Three Forks Formation, Jefferson Formation,and Bighorn
    	Dolomite
    Dd	Darby Formation
    OWCb	Bighorn(?) Dolomite, Gallatin Limestone, and Gros Ventre
    	Formation
    WCs	Snowy Range Formation and Pilgrim Limestone
    WCp	Park Shale, Meagher Limestone, Wolsey Shale, and Flathead
    	Sandstone
    WPCg	Gneiss and schist
    Special Symbol Explanation
    WTR = Triassic
    WMz = Mesozoic
    WP = Pennsylvanian
    WC = Cambrian
    WPC = Pre-Cambrian
    OW = Open water
    
    The "INFO" file that contains the arc arttributes is geol83.aat. The attribute "LTYPE" contains the line type. "SEL" and "SYMB" are not currently used. The file that contains the line attributes and a brief description is: geol83.lul. This file is called geol83ll.dbf as a dbase file for ArcView. This file contains the attribute "DESC" with a general description of the line types.

    1	Faults
    25	Contacts
    301	Open water boundaries
    
    Entity_and_Attribute_Detail_Citation: none


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    Ronald R. Wahl
    U.S. Geological Survey
    U.S. Geological Survey
    P.O. Box 25046 Mail Stop 913
    Denver Federal Center
    Denver, CO 80225-0046

    (303) 236-1320 (voice)
    (303) 236-0214 (FAX)
    rwahl@usgs.gov


Why was the data set created?

The conversion of bedrock geology information of the park into a digital format enables easy overlay with other layers for analysis and development of other themes. The release of the basic data now will give those who need it geologic data for Yellowstone National Park in a timely manner. The data have been reprojected to be in UTM zone 12 meters, and have been adjusted to the North American Datum of 1983. These data are not intended to be used at a scale greater than 1:100,000.


How was the data set created?

  1. From what previous works were the data drawn?

    USGS (1972) (source 1 of 1)
    The U.S. Geological Survey, 1972, Geologic Map of Yellowstone National Park: Miscellaneous Geologic Invesigations I-711, U.S. Geological Survey, Washington, D.C..

    Type_of_Source_Media: Publication negatives.
    Source_Scale_Denominator: 125,000
    Source_Contribution:
    For geologic information for Yellowstone National Park prior to 1972, the following are contributions listed on the map: Quaternary volcanic rocks by R.L. Christiansen, and H.R. Blank, 1966-70. Absaroka volcanic rocks by H.W. Smedes and H.J. Proska. Pre-volcanic rock in the northern part of the Park by E.T. Ruppel, 1965-68; I.J. Witkind, G.D. Fraser, H.A. Waldrop, and H.J. Hyden; W.B. Hall; W.G. Pierce. Pre-volcanic rocks by J.D. Love, 1945-49, 1964-67, and W.R. Keefer, 1966-67. Surficial deposits mainly after G.M. Richmond, K.L. Pierce, and H.A. Waldrop (U.S. Geological Survey, 1972, Surficial Geologic Map of Yellowstone National Park: U.S. Geological Survey Misc. Inv. Map I-710)

  2. How were the data generated, processed, and modified?

    Date: 1998 (process 1 of 4)
    Source negatives were scanned and vectorized using ArcInfo software.

    Date: 1998 (process 2 of 4)
    attributes were added to the database to reflect geology polygon labels.

    Date: 1999 (process 3 of 4)
    Geospatial entities and attributes were checked for completeness and accuracy.

    Date: 2000 (process 4 of 4)
    Metadata documentation was created for the data set.


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

  1. How well have the observations been checked?

    The assignment of attributes to the polygon information is complete and accurate for the data at this scale. Line attribution is not complete.

  2. How accurate are the geographic locations?

    Geologic features were located with a precision that is associated with professional field methods and geologic data compilation methods. Since National Map Accuracy Standards apply to the base map with which these data are registered, then the maximum location accuracy of the geologic data at this scale is approximately 65 meters.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    All geologic features shown on the 1972 geologic map are contained in the current database with the exception of the dikes. The original map was modified by R.L. Christiansen. His later geologic mapping is contained within this coverage.

  5. How consistent are the relationships among the observations, including topology?

    Map elements were checked visually for overshoots, undershoots, duplicate features, polygon closure, and other errors by the authors. In addition, automated (ARC/INFO) routines were used to check the database for polygon label errors, line attribution errors, sliver polygons, dangling arcs, intersection errors, and projection information.


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. However, acknowledgement of the U.S. Geological Survey as the source of the data would be appreciated in products derived from these data.

  1. Who distributes the data set? (Distributor 1 of 1)

    U.S. Geological Survey
    Central Publications Group
    Denver, CO 80225-0046

    303-236-5486 (voice)
    webmaster@greenwood.cr.usgs.gov

  2. What's the catalog number I need to order this data set?

    U.S. Geological Survey Open-File Report 99-174

  3. What legal disclaimers am I supposed to read?

    This report 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.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 18-Dec-2000

Metadata author:
Ronald R. Wahl
P.O. Box 25046 Mail Stop 913
U.S. Geological Survey
Denver Federal Center
Denver, CO 80225-0046

(303) 236-1320 (voice)
(303) 236-0214 (FAX)
rwahl@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)


Generated by mp version 2.7.3 on Mon Dec 18 15:57:58 2000