Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey, Central Energy Resources Team Originator: Fassett, J.E. Publication_Date: 2000 Title: sjb_fin (Final unioned polygon coverage used in coal resource calculations, San Juan Basin, CO and NM) Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Denver, CO USA Publisher: U.S. Geological Survey Other_Citation_Details: in subdir 380k (defines appropriate maximum scale for data use) chap. Q, Geology and coal resources of the Upper Cretaceous Fruitland Formation, San Juan Basin, New Mexico and Colorado Larger_Work_Citation: Citation_Information: Originator: Kirschbaum, M.A. Originator: Roberts, L.N.R. Originator: Biewick, L.R.H. Publication_Date: 2000 Title: Geologic Assessment of Coal in the Colorado Plateau Series_Information: Series_Name: U.S. Geological Survey Professional Paper Issue_Identification: 1625-B Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Description: Abstract: 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. Purpose: 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). Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19960000 Ending_Date: 20000000 Currentness_Reference: Publication Date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -108.5610 East_Bounding_Coordinate: -106.8396 North_Bounding_Coordinate: 37.3286 South_Bounding_Coordinate: 35.8405 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: coal Theme_Keyword: National Coal Resource Assessment (NCRA) Theme_Keyword: Colorado Plateau Theme_Keyword: San Juan Basin Place: Place_Keyword_Thesaurus: None Place_Keyword: Colorado Place_Keyword: New Mexico Place_Keyword: San Juan Basin Place_Keyword: McKinley County, NM Place_Keyword: Sandoval County, NM Place_Keyword: San Juan County, NM Place_Keyword: Rio Arriba County, NM Place_Keyword: La Plata County, CO Place_Keyword: Archuleta County, CO Stratum: Stratum_Keyword_Thesaurus: Geologic Names Unit Lexicon (GNULEX) Stratum_Keyword: Ojo Alamo Sandstone Stratum_Keyword: Kirtland Formation Stratum_Keyword: Farmington Sandstone Stratum_Keyword: Farmington Sandstone Mbr of Kirtland Fm Stratum_Keyword: Fruitland Formation Stratum_Keyword: Pictured Cliffs Sandstone Stratum_Keyword: Lewis Shale Stratum_Keyword: Huerfanito Bentonite Stratum_Keyword: Huerfanito Bentonite Bed of Lewis Shale Access_Constraints: None Use_Constraints: 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. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Central Energy Contact_Person: Fassett, J.E. Contact_Address: Address_Type: mailing and physical address Address: PO Box 25046 MS 939 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303.236.0609 Contact_Electronic_Mail_Address: jfassett@usgs.gov Security_Information: Security_Handling_Description: None Security_Classification: Unclassified Security_Classification_System: None Native_Data_Set_Environment: SunOS, 5.5.1, sun4d UNIX, ARC/INFO version 7.0.4 and ArcView 3.1 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: See Entity_Attribute_Information Logical_Consistency_Report: Polygon topology present. Completeness_Report: Complete. Lineage: Process_Step: Process_Description: 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. Process_Date: 19980000 Process_Step: Process_Description: 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. Process_Date: 19980000 Process_Step: Process_Description: 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. Process_Date: 19980000 Process_Step: Process_Description: 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. Process_Date: 19980000 Process_Step: Process_Description: 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. Process_Date: 19980000 Process_Step: Process_Description: 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 sjb_fin polygon coverage. This coverage was converted to a shapefile in ArcView. Process_Date: 19980000 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 7284 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: .0001 Longitude_Resolution: .0001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: sjb_fin.dbf Entity_Type_Definition: Shapefile Attribute Table Entity_Type_Definition_Source: None Attribute: Attribute_Label: Area Attribute_Definition: Area of polygon Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00000 Range_Domain_Maximum: 0.00793 Attribute: Attribute_Label: Perimeter Attribute_Definition: Perimeter of polygon Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00271 Range_Domain_Maximum: 0.80054 Attribute: Attribute_Label: Hole Attribute_Definition: 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. Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: Cntyname Attribute_Definition: County name Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: Name Attribute_Definition: 7.5 minute quadrangle name Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: State Attribute_Definition: State Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: Block Attribute_Definition: Township and Range block N - north S - south E - east W - west Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: Surf Attribute_Definition: 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 Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: Fedmins Attribute_Definition: 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 Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: Fedcoal Attribute_Definition: Fedcoal yes - Federal government owns rights to the coal no - Federal government does not own rights to the coal Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: Rel Attribute_Definition: Reliability categories hypo -- hypothetical iden - identified Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: Overb Attribute_Definition: Overburden categories - range of overburden to base of Fruitland Formation. Thickness of overburden in 100s of feet. Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: Cthk_cat Attribute_Definition: 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. Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Attribute: Attribute_Label: Fedsurf Attribute_Definition: Surface Federally owned? Attribute_Definition_Source: User Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Central Energy Contact_Address: Address_Type: mailing and physical address Address: PO Box 25046 MS 939 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303.236.4608 Resource_Description: Shapefile and ARC/INFO coverage Distribution_Liability: 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. 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. This data is not a legal document and is not intended to be used as such. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARC/INFO coverage, export file, and shapefile Format_Version_Number: ARC/INFO 7.0.4, ArcView 2.1 Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Recording_Format: ISO 9660 Fees: none Technical_Prerequisites: need ARC/INFO 7.0.4 or greater and/or ArcView 2.1 or greater and/or ArcExplorer (which can be downloaded free from ) and/or other software that can read ARC/INFO coverages, ARC/INFO export files, and/or shapefiles Metadata_Reference_Information: Metadata_Date: 19990203 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Central Energy Contact_Address: Address_Type: mailing and physical address Address: PO Box 25046 MS 939 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303.236.4608 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Security_Information: Metadata_Security_Handling_Description: None Metadata_Security_Classification: Unclassified Metadata_Security_Classification_System: None ------------------------------------------------------------------------ Generated by mp version 2.4.8 on Thu Sep 30 14:21:13 1999