Dubiel, Russell F Kirschbaum, M.A Roberts, L.N.R Mercier, Tracey J Heinrich, A 2000 Downloadable GIS Data Reston,VA U.S. Geological Survey chap. S, Geology and coal resources of the Blackhawk Formation in the southern Wasatch Plateau, central Utah Kirschbaum, M.A. Roberts, L.N.R. Biewick, L.R.H. 2000 U.S. Geological Survey Professional Paper 1625-B Denver, CO U.S. Geological Survey https://pubs.usgs.gov/pp/p1625b/ https://doi.org/10.5066/P9QHUB6Z This is a shapefile and coverage showing the isopachs of total net coal in beds greater than or equal to 1.2' thick in the lower Blackhawk Formation, southern Wasatch Plateau coal assessment area. The Nation's coal resources are being assessed by the USGS. This assessment identifies and characterizes the coal beds and coal zones that will provide the bulk of the nation's coal-derived energy during the next century. This assessment is different from previous large-scale USGS assessments because files and databases are being stored in a digital format and are being analyzed using a Geographic Information System (GIS). 2000 publication date Complete None planned -111.5252 -111.1998 39.2492 38.6676 None coal National Coal Resource Assessment (NCRA) Colorado Plateau coal thickness coal isopach maps ArcIMS Metadata Server Theme Codes geoscientificInformation economy environment EnergyResourceActivities coal nca2000 cplateaucoal wasatchcoal None Utah Wasatch Plateau Southern Wasatch Plateau Sanpete County Emery County Sevier County Geologic Names Unit Lexicon (GNULEX) Blackhawk Formation Star Point Sandstone USGS Metadata Identifier USGS:60ad3416d34e4043c850ef33 None Appropriate maximum scale for data use is 62k. U.S. Geological Survey - CERSC Data Management Services Project mailing and physical

Denver Federal Center, Building 25, Mail Stop 939

Denver CO 80225 USA 1-888-275-8747 datamgt@usgs.gov https://www.sciencebase.gov/catalog/file/get/60ad3416d34e4043c850ef33?f=__disk__9a%2F49%2F29%2F9a4929a2ca2701fdd60cab59cd2969b8cbb8cd48 Thumbnail view of isopachs of total net coal, lower Blackhawk Formation, southern Wasatch Plateau, UT JPEG None Unclassified None SunOS, 5.5.1, sun4d UNIX, ARC/INFO version 7.0.4 and ArcView 3.1 See Entity_Attribute_Information Polygon topology present. Complete. A file was created from an initial query of the Stratifact database for only those records that contain data for the lower Blackhawk Formation. This file was input for a parting/split program. This program, written at the USGS, determines whether a rock unit between two coal units is a parting in a coal bed or if the rock unit splits two separate coal beds as defined in (Wood and others, 1983, p. 36). Coal units are combined to form a single bed if the thickness of rock between them is thinner than the coal on either side. If the rock is thinner it is considered to be a parting and if it is thicker it is considered to be a split. After the program calculates the thickness of coal in each coal bed it determines if the coal beds are greater than the minimum thickness requirement as a resource. For coals of bituminous rank, this minimum thickness is 1.2 ft. (Wood and others, 1983, p.34). Coals in the southern Wasatch Plateau are bituminous in rank. The program goes through another process where it sums coal bed thickness of only the coal beds that are greater than or equal to the minimum thickness (1.2'). The program outputs a single line of data for each location with net coal thickness and x, y location parameters. The data output from this program also contains a column designating the number of coal beds that were added to arrive at the net coal thickness. The output file from the parting/split program was introduced into EarthVision (EV) as a scattered data file, projected into Polyconic projection, and then gridded in EV using the 'minimum tension grid' option. The isopach map of net coal was plotted in EV with a contour interval of 5 ft with an added contour line for 1.2 ft. The contour lines were saved in a contour output file. The contour output file was converted to a file in 'arc generate' format using ISMARC and then converted to an ARC/INFO polygon coverage using an Arc Macro Language program from the Illinois State Geological Survey. The coverage was converted to a shapefile using ArcView. 1998 Vector .0001 .0001 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 wsthkg.dbf Shapefile Attribute Table None Depth Net coal thickness. User Defined 2.50 37.50 Net_coal_t Net coal thickness, values in feet. User Defined Character field Shade Color shade to represent range of net coal thickness. User Defined 1 8 Area Area of polygon Software computed 0.000 0.020 Perimeter Perimeter of polygon Software computed 0.005 1.620 U.S. Geological Survey - ScienceBase mailing and physical

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Denver CO 80225 USA 1-888-275-8747 sciencebase@usgs.gov Downloadable Data Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Shapefile https://doi.org/10.5066/P9QHUB6Z 20210525 20070807 U.S. Geological Survey - CERSC Data Management Services Project mailing and physical

Denver Federal Center, Building 25, Mail Stop 939

Denver CO 80225 USA 1-888-275-8747 datamgt@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time None None ------------------------------------------------------------------------ Generated by mp version 2.4.8 on Thu Sep 30 16:07:27 1999 Unclassified None https://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile