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Coal fields and outlines of coal-bearing strata in the Colorado Plateau coal assessment study area

Metadata also available as - [Outline] - [Parseable text] - [DIF]

Frequently-anticipated questions:

What does this data set describe?

Title:
Coal fields and outlines of coal-bearing strata in the Colorado Plateau coal assessment study area
Abstract:
These are shapefiles and ARC/INFO coverages of coal fields and coal-bearing formations in the Colorado Plateau. These GIS layers were created by combining numerous ARC/INFO coverages created for the Colorado Plateau coal assessment. The coal field outlines are approximate boundaries based on criteria provided below under Data Quality Information, Process Steps. These coal field outlines may not overlap exactly with other published coal field boundaries or with criteria used in the geochemistry data. We used existing polygons taken from numerous digital geologic maps, as described in Process Steps, but did not use overburden cutoffs.
  1. How should this data set be cited?

    U.S. Geological Survey, Central Energy Resources Team, Kirschbaum, M.A., and Biewick, L.R.H., 2000, Coal fields and outlines of coal-bearing strata in the Colorado Plateau coal assessment study area: U.S. Geological Survey, Denver, CO.

    Online Links:

    Other_Citation_Details:
    in subdir: 500k (defines appropriate maximum scale for data use)
    This is part of the following larger work.

    Kirschbaum, M.A., Roberts, L.N.R., and Biewick, L.R.H., 2000, Geologic Assessment of Coal in the Colorado Plateau: U.S. Geological Survey Professional Paper 1625-B, U.S. Geological Survey, Denver, CO.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -113.889
    East_Bounding_Coordinate: -106.337
    North_Bounding_Coordinate: 40.747
    South_Bounding_Coordinate: 33.933

  3. What does it look like?

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

    Beginning_Date: 1980
    Ending_Date: 2000
    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):

      • GT-polygon composed of chains (1572)

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

  7. How does the data set describe geographic features?

    CP_CF.PAT
    Polygon attribute table for CP_CF (Source: ARC/INFO)

    Entity_and_Attribute_Overview:

    Items in the CP_CF Polygon Attribute Table.
    AREA
    Area of polygon/region in square coverage units Computed Positive real number
    PERIMETER
    Perimeter of polygon/region in coverage units Computed Positive real number
    CP_CF#
    Internal feature number Computed Sequential unique positive integer
    CP_CF-ID
    User-assigned feature number User-defined Integer
    GEOL
    Surface geology as indicated in source information
    CROP
    rock type or apparent coal extent
    comb = (combined outcrop and subsurface) coal-bearing formations appear both at the surface and beneath the surface of the Earth
    extrus = extrusive rocks near coal-bearing formations
    intrus = intrusive rocks near coal-bearing formations, heat from which often increased the rank of nearby coal beds
    lenticu = discontinuous, lenticular coal beds
    nocoal = stratigraphic unit adjacent to coal-bearing units that contains no coal (usually sandstone)
    outcrop = coal-bearing formations appear at the surface of the Earth
    subsurf = coal-bearing formations are beneath the surface of the Earth
    CF
    Coal Field as summarized in Kirschbaum and Biewick, chap. B, this CD-ROM publication.
    STDY
    The type of study for the U.S. Geological Survey National Coal Resource Assessment.
    priority = areas defined for the Colorado Plateau where detailed resource assessments have been completed for the U.S. Geological Survey National Coal Resource Assessment.
    summary = important coal fields of the Colorado Plateau that are not priority areas but are summarized in Kirschbaum and Biewick, chap. B, this CD-ROM publication.
    CARS = those areas where Coal Availability and Recoverability studies have been done outside of 'priority' areas.
    in 'cpcfoutl', contains the string 'yes'
    RANK
    Generalized apparent coal rank range is based on summary information reported in Kirschbaum and Biewick, chap. B, this CD-ROM publication, and/or calculated from data in Affolter, chap. G, according to ASTM designation D388-92a using the Parr formula.
    bit-anth = bituminous to anthracite bit = bituminous sub-bit = subbituminous to bituminous sub = subbituminous lig-bit = lignite to bituminous lig-sub = lignite to subbituminous
    RANK_SOURCE
    chap. B = based on summary information reported in chap. B. chap. G(7) = calculated from data in chap. G using the Parr formula. Number in parentheses indicates the number of samples used.
    CB_FM
    Symbols of apparent coal-bearing formation(s) as indicated in source materials (for more information, see Kirschbaum and Biewick, chap. B, this CD-ROM publication).
    AVP
    Contains 'project' in those assessment areas with an ArcView project, or 'no project' in those areas where no ArcView project was created.
    CARS
    Contains 'CARS' in those areas where Coal Availability and Recoverability studies have been done.
    ------------------------------------------------------------------------
    Items in the CP_CF Region Attribute Table (shapefile = cp_cfr.shp)
    AREA
    Area of polygon/region in square coverage units Computed Positive real number
    PERIMETER
    Perimeter of polygon/region in coverage units Computed Positive real number
    CP_CF#
    Internal feature number Computed Sequential unique positive integer
    CP_CF-ID
    User-assigned feature number User-defined Integer
    CF
    Coal Field
    Entity_and_Attribute_Detail_Citation: this document

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?

    In the San Rafael Swell area, Utah, we utilized an Arc/Info coverage created by the Water Resources Division (WRD) of the U.S. Geological Survey that defines surface geology of hydrostratigraphic units. This coverage is not a final product for that activity; rather, it was captured to define surface geology of hydrostratigraphic units, and it will be used by WRD as input to three-dimensional (3-D) subsurface hydrogeologic and flow models. This coverage was created by scanning mylar sheets that contain traced hydrostratigraphic unit boundaries from paper U.S. Geological Survey surface geologic maps at 1:100,000 in the Nephi, Manti, Price, and Huntington 30' x 60' quadrangles (Witkind and Weiss, 1991; Witkind and others, 1987; Weiss and others, 1990; and Witkind, 1988 respectively) and at 1:250,000 in the Salina 1 x 2-deg quadrangle (Williams and Hackman, 1971). The original projection of the coverage is Universal Transverse Mercator (UTM) zone 12, meters, using the Clarke 1866 spheroid (NAD 27).

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

    U.S. Geological Survey
    P.O. Box 25046, MS 939
    Denver, CO 80225
    USA

    (303)236-7773 (voice)
    lbiewick@usgs.gov

Why was the data set created?

The Nation's coal resources are being reassessed by the USGS. A fundamental component of this assessment work is to compile digital geologic and geographic data into a Geographic Information System (GIS). Use of this GIS allowed for the spatial integration of data layers. This resulted in the ability to display, analyze, and query data to answer complex geo-spatial questions concerning coal resource occurrence.

How was the data set created?

  1. From what previous works were the data drawn?

    USGS Map MF-1179 (source 1 of 29)
    Barnum, B.E., and Garrigues, R.S., 1980, Geologic map and coal sections of the Cactus Reservoir Quadrangle, Rio Blanco and Moffat Counties, Colorado: U.S. Geological Survey Miscellaneous Field Studies Map Map MF-1179.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24,000
    Source_Contribution: surface geology

    USGS Map MF-2314 (source 2 of 29)
    Barnum, B.E., and Hail, W.J., Jr., 1996, Geologic map of the Gillam Draw Quadrangle, Rio Blanco County, Colorado: U.S. Geological Survey Miscellaneous Field Studies Map Map MF-2314.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24,000
    Source_Contribution: surface geology

    Biewick and others, 1997 (source 3 of 29)
    Biewick, L.R.H., Hettinger, R.D., and Roberts, L.N.R., 1997, Selected ARC/INFO coverages created for investigations of the distribution and resources of coal in the Kaiparowits Plateau, southern Utah: an accompaniment to Hettinger and others, 1996; version 1: U.S. Geological Survey Open-File Report 97-709, U.S. Geological Survey, Denver, CO.

    Online Links:

    Type_of_Source_Media: online
    Source_Contribution: GIS data

    Cooley and others, 1969 (source 4 of 29)
    Cooley, M.E., Harshbarger, J.W., Akers, J.P., and Hardt, W.F., 1969, Regional hydrogeology of the Navajo and Hopi Indian Reservations, Arizona, New Mexico, and Utah: U.S. Geological Survey Professional Paper Professional Paper 521-A.

    Other_Citation_Details: 61 p.
    Type_of_Source_Media: paper
    Source_Contribution: geology

    USGS Map GQ-703 (source 5 of 29)
    Cullins, H.L., 1968, Geologic map of the Banty Point Quadrangle, Rio Blanco County, Colorado: U.S. Geological Survey Geologic Quadrangle Map Map GQ-703.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24,000
    Source_Contribution: surface geology

    USGS Map GQ-835 (source 6 of 29)
    Cullins, H.L., 1969, Geologic map of the Mullen Hill Quadrangle, Rio Blanco County, Colorado: U.S. Geological Survey Geologic Quadrangle Map Map GQ-835.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24,000
    Source_Contribution: surface geology

    USGS Map GQ-812 (source 7 of 29)
    Cullins, H.L., 1971, Geologic map of the Rangely Quadrangle, Rio Blanco County, Colorado: U.S. Geological Survey Geologic Quadrangle Map Map GQ-812.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24,000
    Source_Contribution: surface geology

    monograph series no. 1 (source 8 of 29)
    Doelling, H.H., and Graham, R.L., 1972, Southwestern Utah coal fields: Alton, Kaiparowits Plateau and Kolob-Harmony.

    Type_of_Source_Media: book
    Source_Contribution: map showing coal fields

    Fassett and Hinds, 1971 (source 9 of 29)
    Fassett, J.E., and Hinds, J.S., 1971, Geology and fuel resources of the Fruitland Formation and Kirtland Shale of the San Juan basin, New Mexico and Colorado: U.S. Geological Survey Professional Paper Professional Paper 676.

    Other_Citation_Details: 76 p.
    Type_of_Source_Media: book with paper map
    Source_Scale_Denominator: 380,160
    Source_Contribution: San Juan Basin geology

    USGS OF-80-274 (source 10 of 29)
    Garrigues, R.S., and Barnum, B.E., 1980, Geologic map and coal sections of the Rangely NE Quadrangle, Rio Blanco and Moffat Counties, Colorado: U.S. Geological Survey Open-File Report OF-80-274.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24,000
    Source_Contribution: geology

    USGS OFR 92-0507 (source 11 of 29)
    Green, G.N., 1992, The Digital Geologic Map of Colorado in ARC/INFO Format: U.S. Geological Survey Open-File Report USGS OFR 92-0507, U.S. Geological Survey, Denver, CO.

    Online Links:

    Type_of_Source_Media: map
    Source_Scale_Denominator: 500,000
    Source_Contribution: coal-bearing formations in Colorado

    USGS OF-97-52 (source 12 of 29)
    Green, G.N., and Jones, G.E., 1997, The Digital Geologic Map of New Mexico in ARC/INFO Format: U.S. Geological Survey Open-File Report USGS OF-97-52, US Geological Survey, Denver.

    Online Links:

    Type_of_Source_Media: map
    Source_Scale_Denominator: 500,000
    Source_Contribution: coal-bearing formations in New Mexico

    Hail, 1974 (source 13 of 29)
    Hail, W.J., 1974, Geologic map of the Rough Gulch quadrangle, Rio Blanco and Moffat counties, Colorado: U.S. Geological Survey Geologic Quadrangle Map Map GQ-1195.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24,000
    Source_Contribution: geology

    Hail and Barnum, 1993 (source 14 of 29)
    Hail, W.J., Jr., and Barnum, B.E., 1993, Geologic map of the Divide Creek quadrangle, Rio Blanco and Moffat counties, Colorado: U.S. Geological Survey Miscellaneous Field Studies Map Map MF-2232.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24,000
    Source_Contribution: geology

    Hettinger and others, 1996 (source 15 of 29)
    Hettinger, R.D., Roberts, L.N.R., Biewick, L.R.H., and Kirschbaum, M.A., 1996, Preliminary investigations of the distribution and resources of coal in the Kaiparowits Plateau, southern Utah: U.S. Geological Survey Open-File Report 96-539, U.S. Geological Survey, Denver, CO.

    Online Links:

    Type_of_Source_Media: hardcopy report
    Source_Contribution: geology and coal resources of the Kaiparowits Plateau

    NMBM&MR Resource Map 20, October 1996 (source 16 of 29)
    Hoffman, Gretchen K., 199610, Coal resource of New Mexico: New Mexico Bureau of Mines and Mineral Resources, New Mexico.

    Type_of_Source_Media: map and pamphlet
    Source_Contribution:
    map and textual compilation of coal resource data

    CGS map series 9 (source 17 of 29)
    Survey, Colorado Geological , Jones, D.C., Schultz, J.E., and Murray, D.K., 1978, Coal Resources and Development Map of Colorado: Colorado Geological Survey Map Series 9 Map Series 9, Colorado Geological Survey, Denver.

    Type_of_Source_Media: map
    Source_Scale_Denominator: 500,000
    Source_Contribution: coal fields in Colorado

    Landis, 1959 (source 18 of 29)
    Landis, E.R., 1959, Coal Resources of Colorado: U.S. Geological Survey Bulletin 1072-C, U.S. Geological Survey, Denver, CO.

    Type_of_Source_Media: paper map
    Source_Contribution: coal geology

    O'Sullivan and others, 1986 (source 19 of 29)
    O'Sullivan, R.B., Mytton, J.W., Strobell, J.D., Jr., Scott, G.R., and Erpenbeck, M.F., 1986, Preliminary geologic map of the Tanner Lake quadrangle, San Juan County, New Mexico: U.S. Geological Survey Miscellaneous Field Studies Map Map MF-1864, U.S. Geological Survey, Reston, VA.

    Other_Citation_Details: 2 sheets
    Type_of_Source_Media: paper map
    Source_Scale_Denominator: 24,000
    Source_Contribution: surface geology

    Schneider and others, 1979 (source 20 of 29)
    Schneider, G.B., Weide, D.L., Mytton, J.W., and Scott, G.R., 1979, Geologic map of the Pueblo Bonito NW quadrangle, San Juan County, New Mexico: U.S. Geological Survey Miscellaneous Field Studies Map Map MF-1117, U.S. Geological Survey, Reston, VA.

    Other_Citation_Details: 1 sheet
    Type_of_Source_Media: paper map
    Source_Scale_Denominator: 24,000
    Source_Contribution: surface geology

    DDS 11 (source 21 of 29)
    Schruben, P.G., Arndt, R.E., and Bawiec, W.J., 1994, Geology of the conterminous United States at 1:2,500,000 scale: U.S. Geological Survey Digital Data Series Digital Data Series 11.

    Online Links:

    Type_of_Source_Media: online
    Source_Scale_Denominator: 2,500,000
    Source_Contribution: fault lines

    Memoir 25 (source 22 of 29)
    Shomaker, J.W., Beaumont, E.C., and Kottlowski, F.E., 1971, Strippable Low-Sulfur Coal Resources of the San Juan Basin in New Mexico and Colorado: New Mexico Bureau of Mines and Mineral Resources, NM.

    Other_Citation_Details:
    a Division of New Mexico Institute of Mining and Technology, Socorro, NM
    Type_of_Source_Media: book
    Source_Contribution: New Mexico coal field information including location

    Spieker, 1931 (source 23 of 29)
    Spieker, E.M., 1931, The Wasatch Plateau coal field, Utah: U.S. Geological Survey Bulletin Bulletin 819.

    Other_Citation_Details: 210 p.
    Type_of_Source_Media: paper map
    Source_Scale_Denominator: 62,500
    Source_Contribution:
    geology and faults in the southern Wasatch coal assessment area

    Strobell and others, 1985 (source 24 of 29)
    Strobell, J.D., Jr., O'Sullivan, R.B., Mytton, J.W., and Erpenbeck, M.F., 1985, Preliminary geologic map of the Pretty Rock quadrangle, San Juan County, New Mexico: U.S. Geological Survey Miscellaneous Field Studies Map Map MF-1788, U.S. Geological Survey, Reston, VA.

    Other_Citation_Details: 1 sheet
    Type_of_Source_Media: paper map
    Source_Scale_Denominator: 24,000
    Source_Contribution: surface geology

    USGS Map I-1981 (source 25 of 29)
    Weiss, M.P., Witkind, I.J., and Cashion, W.B., 1990, Geologic map of the Price 30' x 60' quadrangle, Carbon, Duchesne, Uintah, Utah and Wasatch Counties, Utah: U.S. Geological Survey Miscellaneous Investigations Series Map Map I-1981.

    Type_of_Source_Media: mylar trace of paper map
    Source_Scale_Denominator: 100,000
    Source_Contribution:
    surface geology of the Price 30' x 60' quadrangle, Utah

    USGS Map I-591-A (source 26 of 29)
    Williams, P.E., and Hackman, R.J., 1971, Geology of the Salina Quadrangle, Utah: U.S. Geological Survey Miscellaneous Investigations Series Map Map I-591-A.

    Type_of_Source_Media: mylar trace from paper map
    Source_Scale_Denominator: 250,000
    Source_Contribution:
    surface geology of the Salina 1 x 2 deg. quadrangle, Utah

    USGS Map I-1764 (source 27 of 29)
    Witkind, I.J., 1988, Geologic map of the Huntington 30' x 60' quadrangle, Carbon, Emery, Grand, and Uintah Counties, Utah: U.S. Geological Survey Miscellaneous Investigations Series Map Map I-1764.

    Type_of_Source_Media: mylar trace of paper map
    Source_Scale_Denominator: 100,000
    Source_Contribution:
    Surface geology of the Huntington 30' x 60' quadrangle, Utah

    USGS Map I-1937 (source 28 of 29)
    Witkind, I.J., and Weiss, M.P., 1991, Geologic map of the Nephi 30' x 60' quadrangle, Carbon, Emery, Juab, Sanpete, Utah, and Wasatch Counties, Utah: U.S. Geological Survey Miscellaneous Investigations Series Map Map I-1937.

    Type_of_Source_Media: mylar trace of paper map
    Source_Scale_Denominator: 100,000
    Source_Contribution:
    surface geology of the Nephi 30' x 60' quadrangle, Utah

    USGS Map I-1631 (source 29 of 29)
    Witkind, I.J., Weiss, M.P., and Brown, T.L., 1987, Geologic map of the Manti 30' x 60' quadrangle, Carbon, Emery, Juab, Sanpete, and Sevier Counties, Utah: U.S. Geological Survey Miscellaneous Investigations Series Map Map I-1631.

    Type_of_Source_Media: mylar trace of paper map
    Source_Scale_Denominator: 100,000
    Source_Contribution:
    surface geology of the Manti 30' x 60' quadrangle, Utah

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

    Date: 1997 (process 1 of 1)
    The coverages used in the Kaiparowits Plateau, southern Utah, were created for the assessment of the coal deposits in the Calico and A-sequences of the Upper Cretaceous Straight Cliffs Formation (Hettinger and others, chap. T, this CD-ROM). These coverages were captured at a scale of 1:125,000. The polygon coverage that represents the outcrop and area underlain by of the Calico sequence boundary defines the base of the coal-bearing part of the Straight Cliffs Formation.
    The polygon coverage that represents the outcrop of the Drip Tank Member of the Straight Cliffs Formation is included to show the extent of subsurface coal. 'subsurf' was assigned to the item (field) CROP of all polygons within the Drip Tank Member to show that coal-bearing rocks occur in the subsurface. 'outcrop' was assigned to the item CROP for all polygons within the Straight Cliffs Formation that extend beyond the Drip Tank Member to show where the coal-bearing rocks are exposed at the Earth's surface. The polygon coverage that outlines the Kaiparowits Plateau delineates the base of the Dakota Formation which is the base of Upper Cretaceous rocks. The Dakota Formation contains minor coal beds. A Utah State geology coverage (captured at 1:500,000) was used to extend these formation contacts westward beyond 112 degrees of longitude, and to define the Alton, Kolob, Harmony, Salina Canyon, Wales and Henry Mountains coal fields. Doelling and Graham, 1972, was used as reference for defining coal fields in southwestern Utah.
    The Paunsaugunt fault, which defines the western boundary of the Kaiparowits Plateau, was extended beyond 112 degrees of longitude by using fault lines from the King and Beikman USA geology map coverage (1:2,500,000; Schruben and others, 1994). Other fault lines from the King and Beikman coverage were used to define the extent of the Alton and Kolob Fields. To define the Uinta deep coal field, the base of T1 was used from a Utah State geology coverage (1:500,000), except where we had more detailed digital data for the northern Wasatch Plateau, Utah. The more detailed data was captured by the Water Resources Division (WRD) of the U.S. Geological Survey at 1:100,000 from the geologic map of the Nephi 30' x 60' quadrangle (Witkind and Weiss, 1991; see Data_Set_Credit: discussion above). Two lines were added to close the polygon defining coal in the subsurface along the northern and western boundaries of the Uinta deep coal field, and minor lines were added to close other small gaps in the polygon.
    In the Wasatch Plateau, Utah, several coverages were combined to capture geologic units that define coal-bearing formations that are exposed or occur in the subsurface. These include the Utah State geology coverage (1:500,000), the WRD coverage (1:100,000 and 1:250,000; see Data_Set_Credit: discussion above), and a coverage created for the assessment of coal deposits in the Blackhawk Formation, southern Wasatch Plateau, captured at 1:62,500 from Spieker, 1931. Included also are the Star Point and Ferron sandstones, which are attributed as 'nocoal' areas in the item CROP. To extend the subsurface Blackhawk Formation north and east into the northern Wasatch Plateau and Book Cliffs, Utah, we again utilized the coverage created by the Water Resources Division (WRD) of the U.S. Geological Survey. In the Sego coal field, we used the Utah State geology coverage (1:500,000) to define the extent of coal in the Blackhawk Formation as being combined surface and subsurface coal.
    In the San Juan Basin, New Mexico and Colorado, a coverage was captured at 1:380,160 by digitizing the geologic map in Fassett and Hinds, 1971. This coverage was converted to a shapefile and modified in ArcView to update the base of the Fruitland Formation, top of the Pictured Cliffs Sandstone contact for the assessment of coal in the Fruitland Formation. The modifications are based on 1:24,000-scale geologic maps (O'Sullivan and others, 1986; Schneider and others, 1979; and Strobell and others, 1985) and 1998 reconnaissance field mapping by Fassett, J.E., USGS. Other coal fields in New Mexico were defined using coal-bearing formations selected from the digital geologic map of New Mexico (Green and Jones, 1997). Polygons defining intrusions were obtained from Green and Jones, 1997. The coal fields were further delineated by referencing Hoffman, 1996 and Shomaker and others, 1971.
    Coal geology in the Piceance Basin and the Yampa coal field of the Greater Green River basin was taken from the digital geologic map of Colorado (1:500,000; Green, 1992) and modified to include more detailed data from published 1:24,000-scale maps (Barnum and Garrigues, 1980; Barnum and Hail, 1996; Cullins, 1968, 1969, 1971; Garrigues and Barnum, 1980; Hail, 1974; Hail and Barnum, 1993). The southern Piceance Basin priority assessment area has a northern extent that is defined at 39 deg 42' 30" latitude. Coal geology for the Nucla-Naturita coal field was taken from the digital geologic map of Colorado (1:500,000; Green, 1992) by selecting the Cretaceous Dakota Sandstone. The outline of the Tongue Mesa coal field is based on Landis, 1959.
    The Black Mesa coal field was created from a combination of the 1:1,000,000-scale Arizona geologic map and a CANVAS graphic that was acquired from the Northern Arizona University (NAU). The Arizona geologic map coverage is a digital version of the Arizona Geological Survey Map 26 that was created by the BLM and the Arizona Geologic Survey. This Digital Geologic Map of Arizona is available at <URL:http://greenwood.cr.usgs.gov/maps/maps.html>. The CANVAS graphic was prepared at NAU by scanning sheets 1-6 of Plate 1, Cooley and others, 1969. The Arizona geologic map coverage was also used to define the Pinedale coal field.
    Coal-bearing formations were attributed as summarized in Kirschbaum and Biewick (chap. B, this CD-ROM). A region feature, 'cf', was created to consolidate polygons that make up each coal field. The REGIONDISSOLVE command was used to dissolve on the polygon attribute item 'cf' (coal field). This region feature efficiently defines the noncontiguous and nested areas of coal fields (shapefile = cp_cfr.shp).
    The northern Wasatch Plateau and the Bisti Coal Availability and Recoverability study areas were added using outlines of the 7.5' quadrangles that make up these two study areas. Metadata for the 7.5'-quadrangles coverages can be found in most of the assessment area metadata folders with filenames that contain the assessment area prefix and '24qd.met'. Topology was recreated using the Arc/Info BUILD or CLEAN commands as needed. When it was necessary to CLEAN a coverage, the output coverage was always compared to the input coverage to assure that an appropriate fuzzy tolerance was used and none of the arcs were repositioned following CLEAN. LABELERRORS was run to detect extraneous and missing labels, and those errors were corrected in Arcedit. Occasionally IDEDIT was used to change the User-IDs stored in the LAB file to equal the label point User-IDs stored in the PAT. All data were projected to geographic decimal degrees. The coverage and shapefile 'cpcfoutl' was created to outline the coal-bearing formations.

  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?

    weed tolerance 0.004m

  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?

    Polygon topology present.

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: appropriate maximum scale for data use is 500k

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

    U.S. Geological Survey, Central Energy Resources Team
    c/o Laura R.H. Biewick
    P.O. Box 25046, MS 939
    Denver, CO 80225
    USA

    (303)236-7773 (voice)
    lbiewick@usgs.gov

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

    shapefile and ARC/INFO coverage

  3. What legal disclaimers am I supposed to read?

    Any use of trade, product, or company names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the USGS regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    need ARC/INFO 7.0.4 or greater and/or ArcView 2.1 or greater and/or ArcExplorer (which can be downloaded free from <URL:http://www.esri.com>) and/or other software that can read ARC/INFO coverages, ARC/INFO export files, or shapefiles

Who wrote the metadata?

Dates:
Last modified: 10-Jun-1998
Metadata author:
U.S. Geological Survey, Central Energy Resources Team
c/o Laura R.H. Biewick
P.O. Box 25046, MS 939
Denver, CO 80225
USA

(303)236-7773 (voice)
lbiewick@usgs.gov

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

This page is <http://geo-nsdi.er.usgs.gov/metadata/professional-paper/1625/b/cp_cf.faq.html>
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