Fassett, J.E 2000 Downloadable GIS Data Reston,VA U.S. Geological Survey chap. Q, Geology and coal resources of the Upper Cretaceous Fruitland Formation, San Juan Basin, New Mexico and Colorado 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/P9QM0RN6 This is a shapefile and the final unioned polygon coverage used to calculate coal resources of the Fruitland Formation, San Juan Basin coal assessment area, Colorado and New Mexico. Polygons that make up the final unioned polygons include counties, 7.5' quadrangles, townships, surface and coal ownership, reliability, overburden categories, and net coal thickness categories. The final unioned coverage was clipped by the resource boundary polygon, which is described in the metadata file for the shapefile SJB_BND. 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). 1996 2000 publication date Complete None planned -108.5610 -106.8396 37.3286 35.8405 None coal National Coal Resource Assessment (NCRA) Colorado Plateau San Juan Basin ArcIMS Metadata Server Theme Codes geoscientificInformation economy environment EnergyResourceActivities coal nca2000 cplateaucoal sanjauncoal None Colorado New Mexico San Juan Basin McKinley County, NM Sandoval County, NM San Juan County, NM Rio Arriba County, NM La Plata County, CO Archuleta County, CO Geologic Names Unit Lexicon (GNULEX) Ojo Alamo Sandstone Kirtland Formation Farmington Sandstone Farmington Sandstone Mbr of Kirtland Fm Fruitland Formation Pictured Cliffs Sandstone Lewis Shale Huerfanito Bentonite Huerfanito Bentonite Bed of Lewis Shale USGS Metadata Identifier USGS:60ad25fcd34e4043c850e96d None Appropriate maximum scale for data use is 380K. No restrictions, however, comparison with other data sets on surface and mineral ownership for the same area from other time periods might be inaccurate due to inconsistencies resulting from changes in land and mineral ownership and in mapping convention over time. 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/60ad25fcd34e4043c850e96d?f=__disk__e0%2Fe2%2F98%2Fe0e298301e6997644a879c8264b69e44c302d90a Thumbnail view of the final unioned polygon coverage used in coal resource calculations, San Juan Basin, CO and NM 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. An x, y extent greater than the resource area was used to begin the unioning process and was clipped, as a last step, by the polygon that limits the resource area. County data used in unioned polygons are described in metadata file sjb_cnty.met. Township and range data are described in sjb_tr.met and was unioned with the County coverage. 7.5 minute quadrangle data are described in sjb_24qd.met and was unioned with the previously unioned coverage. 1998 Ownership coverages from the San Juan Resource Area (Colorado) and the New Mexico portion of the San Juan Basin were processed, as described below, and MAPJOINed. The resultant coverage was then snapped to the San Juan Basin township coverage (which is a combination of mapjoined 100k DLGs for the Colorado portion and a New Mexico PLSS coverage that was collected by the NM Bureau of Land Management (BLM) from 7.5' USGS quadrangle maps) and CLEANed. Labelerrors & slivers were then removed and the coverage was rebuilt. The New Mexico surface ownership theme, used to display existing land ownership, was obtained from the New Mexico State BLM office in 1997. The file projection was UTM 13, NAD 27. The following information describes the work done by the BLM to create the surface ownership coverage. The BLM Case Recordation Data Base (CRDB) and the Status Data Base are reviewed to determine the necessary data. The realty specialist delineates the land ownership using proper attributes and/or color code on a 7.5' topographic map. The map is then reviewed for accuracy. The information on New Mexico subsurface ownership was obtained from the former U.S. Bureau of Mines (USBM, Clark Roberts). The data is based on work done in 1987. At that time acquired land status and mineral ownership information was collected by the former USBM by reading Master Title Plats and management documents. This data is more accurate than 100K BLM maps published prior to 1987. The leasable minerals owned by the Federal government are generalized to the section level. As defined in this coverage, any section that contains a leasable mineral commodity that is owned by the Federal government in 50% or more of the areal extent of the section, is flagged as Federal ownership for that particular commodity for the entire section. Likewise, sections that contain a leasable mineral commodity that is owned by the Federal government in less than 50% of the areal extent of the section are flagged as nonfederal ownership for that particular commodity for the entire section. The information on subsurface ownership was acquired by the USGS as attributes in an INFO file that tied mineral ownership to sections. The USGS added this information to a public version of the Public Land Survey System (PLSS) that was acquired from the State of New Mexico via the New Mexico Resource Geographic Information System Program (RGIS) Clearinghouse Resource Data 1996 CD-ROM, Volume 1, Version 1.0. The item PLSS_ID was added to join INFO file data defining Federal Mineral ownership to the PLSS. The item was populated by CALC PLSS_ID equals (( QUAD * 100000000 ) + ( R * 100000 ) + ( T * 100 ) + ( SECTION )). Subsequently, this data was UNIONed and SNAPped to the land ownership data described above, which contained updated PLSS lines taken from a more recent data set described in the discussion of the township lines in this data set. A visual inspection was performed using New Mexico 100k Land Status quads and "Availability of Federal Mineral Land Compared with Areas Favorable for Leasable Minerals Coal and Geothermal in New Mexico", Bureau of Mines, 1982. The USGS created a hardcopy map to verify. The USGS populated item FEDMINS based on the values in PLATE_II, III, IV, V, VI'; and populated item, SURF based on OWN_NAME. Colorado surface ownership originated from the Geographic Approach to Planning (GAP) Analysis Program (vintage 1995), scale 100K (see //www.gap.uidaho.edu/GAP/Bulletins/6/SR_CO.htm) For Colorado subsurface data, the USGS converted BLM data from Mapping Overlay Statistical System (MOSS) export files to Arc coverages. The data sets from BLM San Juan Resource Area of Colorado were 7.5'-scale subsurface maps that were originally digitized using Automated Digitizing System (ADS) and converted to MOSS and then converted to MOSS export format. The USGS used MOSSARC to convert the files to Arc/Info and used special care after conversion to look for slivers, labelerrors and nodeerrors and cleaned them to create polygon topology. The USGS then appended all the 7.5' quads, cleaned the coverage and dissolved on item DATA to delete quad lines. The land and mineral ownership coverages for the Colorado portion of the San Juan Basin were overlayed via UNION / NO-JOIN. Overlaying dissimilar scales creates slivers. Slivers were removed by using an aml written for this application and by manual editing. After deleting slivers coverage attributes were added back in with JOINITEM. Coverage was checked against the original BLM land status maps and edited as necessary. SUMMARY -- This coverage portrays the current status of what is commonly known as "surface ownership" in New Mexico. More accurately stated, the coverage displays land parcels which are attribute coded to the organization that is responsible for managing the surface of the land for that parcel. The coverage is not intended to depict the entity that holds title to the land, nor is it intended to depict subsurface rights. DISCLAIMER -- The land ownership status records contained in this data set are not the BLM's official records of title. To obtain the official records, consult the Master Title Plats and Historical Indices available through the Public Room at the BLM New Mexico State Office which is located at 1474 Rodeo Road in Santa Fe, NM. No warranty is made by the BLM for use of the data for purposes not intended by the BLM. CONTACT- James Alm Bureau of Land Management New Mexico State Office Geographic Sciences Team; NM95220 (505) 438-7541 The resultant coverage was unioned with the coverage containing county, 7.5' quadrangle, and township data. 1998 A coverage was generated that contains polygons for coal reliability categories of 'identified' and 'hypothetical'. It was generated using the BUFFER command in ARC/INFO. Round buffers were generated at a distance of three miles from a point of thickness for 'identified' and everything beyond three miles is 'hypothetical' (Wood and others, 1983). This coverage was then unioned to the previously unioned coverage containing Counties, 7.5' quadrangles, Townships, and surface and mineral ownership. 1998 A coverage was generated from a gridded file of data representing the overburden thickness to the base of the coal-bearing Fruitland Formation (same as the top of the Pictured Cliffs Sandstone). The overburden grid is a result of subtracting the grid for the top of the Pictured Cliffs Sandstone (see sjb_strc.met for details of this grid file) from the grid of the earth's surface in EarthVision (EV). The surface grid is a mosaic of 250K Digital Elevation Models of the San Juan Basin, NM and CO parts, imported through EV. A map of the overburden to the base of the Fruitland was plotted in EV with a contour interval of 500 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. In ARC/INFO, the overburden coverages were unioned with the previously unioned coverage of Counties, 7.5' quadrangles, townships, surface and mineral ownership, and reliability categories. 1998 A coverage was generated from a gridded file of data from drill holes and measured sections that contain x, y, data for location and values for the net coal thickness for the Fruitland Formation. Details about how this data file was generated from the Stratifact data base are described in the metadata files sjb_thk.met EarthVision was used to do the gridding. The net coal thickness does not include coal beds that are less than resource thickness, which for bituminous coal is 1.2 ft. Contours defining the net coal thickness categories for bituminous coal from USGS circular 891, were generated from the grid. These contour lines include 1.2 ft, 2.3, 3.5, 7.0, and 14.0. 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. This polygon coverage was unioned with the coverage created from the previous union that contains data for Counties, 7.5' quadrangles, Townships, surface and mineral ownership, reliability categories, and overburden categories. 1998 The ARC/INFO polygon coverage generated from all these unions was then clipped using the Arc 'identity' command. The 'input' coverage is described in a metadata file called sjb_bnd.met. The 'identity' coverage is the final unioned polygon. The 'output' coverage is this sjbfing polygon coverage. This coverage was converted to a shapefile in ArcView. 1998 Vector .0001 .0001 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 sjbfing.dbf Shapefile Attribute Table None Area Area of polygon Software computed 0.00000 0.00793 Perimeter Perimeter of polygon Software computed 0.00271 0.80054 Hole Holes are polygons within the resource polygon for which resources were not reported because the coal is less than resource thickness (1.2 ft). If hole equals yes, then resources were not reported for that polygon. If hole equals no or is blank, then a tonnage value for that polygon was reported. User Defined Character field Cntyname County name User Defined Character field Name 7.5 minute quadrangle name User Defined Character field State State User Defined Character field Block Township and Range block N - north S - south E - east W - west User Defined Character field Surf Surface ownership BLM - US Bureau of Land Management FS - US Forest Service BREC - US Bureau of Reclamation STATE - State PRIVATE - Private NPS - National Park Service SREC - State Recreational Area TL - Tribal Lands User Defined Character field Fedmins Federal mineral ownership ALL - Federal government owns all minerals COAL - Federal government owns the coal only OGC - Federal government owns the oil, gas, and coal only OG - Federal government owns oil and gas only NONE - Federal government owns none of the minerals OTHER - other OG+ - Federal government owns oil, gas and other minerals OGC+ - Federal government owns the oil, gas, coal and other minerals Blank - unknown User Defined Character field Fedcoal Fedcoal yes - Federal government owns rights to the coal no - Federal government does not own rights to the coal User Defined Character field Rel Reliability categories hypo -- hypothetical iden - identified User Defined Character field Overb Overburden categories - range of overburden to base of Fruitland Formation. Thickness of overburden in 100s of feet. User Defined Character field Cthk_cat Net coal thickness categories - range of net coal thickness in beds > or equal to 1.2 ft. Thickness categories are defined in Wood, and others, 1983, USGS Circular 891. See metadata file sjb_thk.met for description of net coal thickness. User Defined Character field Fedsurf Surface Federally owned? User Defined Character field U.S. Geological Survey - ScienceBase mailing and physical

Denver Federal Center, Building 810, Mail Stop 302

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/P9QM0RN6 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 Generated by mp version 2.4.8 on Thu Sep 30 14:21:13 1999 Unclassified None https://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile