Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Central Energy Resources Team Publication_Date: 19990930 Title: Overburden above the Ferris 25 coal zone Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Professional Paper Issue_Identification: 1625-A Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Online_Linkage: http://greenwood.cr.usgs.gov/energy/coal/PP1625A/pp1625A.html Description: Abstract: This ArcView shapefile contains a representation of the overburden thickness above the Ferris 25 coal zone in the Ferris coalfield, Hanna Basin, Wyoming. This theme was created specifically for the National Coal Resource Assessment in the Northern Rocky Mountain and Great Plains Region. 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 few decades. This assessment is different from previous USGS assessments because digital files and databases are being collected and stored in standardized formats, and being analyzed using a Geographic Information System (GIS). Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Currentness_Reference: Publication Date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -106.8570 East_Bounding_Coordinate: -106.6166 North_Bounding_Coordinate: 42.0461 South_Bounding_Coordinate: 41.8166 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Coal Theme_Keyword: Overburden Theme_Keyword: Ferris 25 coal zone Theme_Keyword: Northern Rocky Mountain and Great Plains Fort Union Coal Resources Assessment Theme_Keyword: Ferris Formation Theme_Keyword: Overburden isopach map Theme_Keyword: Minimum overburden Theme_Keyword: Overburden thickness Theme_Keyword: National Coal Resource Assessment Place: Place_Keyword_Thesaurus: None Place_Keyword: Northern Rocky Mountains and Great Plains Region Place_Keyword: Wyoming Place_Keyword: Carbon County Place_Keyword: Ferris 25 study limit Place_Keyword: Hanna Basin Place_Keyword: Ferris coalfield Theme: Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented Theme_Keyword: 1400 - Resources Theme_Keyword: 1403 - Fuels Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0 Place_Keyword: 56007 = Carbon Access_Constraints: None Use_Constraints: None Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Energy Resources Team Contact_Person: Margaret Ellis Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: Box 25046 MS 939 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303.236.7775 Contact_Electronic_Mail_Address: mellis@usgs.gov Hours_of_Service: Monday through Friday, 8:00 AM- 3:00 PM Native_Data_Set_Environment: ArcView version 3.0 ARC/INFO 7.1.2 SUNOS, 5.6 SUN4U UNIX Data_Quality_Information: Logical_Consistency_Report: Polygon features present Completeness_Report: Limited to Ferris 25 Coal Zone Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Limited to software coordinates precession to geographic coordinates Lineage: Source_Information: Source_Citation: Citation_Information: Originator: USGS Energy Resources Team Publication_Date: Unpublished material Title: USGS National Coal Resource Data System Other_Citation_Details: US Geological Survey MS 956 Reston, VA 20192 (attn. M.D. Carter) Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: Unknown Source_Currentness_Reference: Publication Date Source_Citation_Abbreviation: None Source_Contribution: This source conributed stratigraphic and location data that was used to generate a grid that represented the elevation at the top of the uppermost coal in the ferris 25 coal zone. Source_Information: Source_Citation: Citation_Information: Originator: USGS EROS Data Center Publication_Date: Unpublished material Title: 30-minute digital elevation models Other_Citation_Details: http//edcwww.cr.usgs.gov Source_Scale_Denominator: 250000 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19951000 Source_Currentness_Reference: Publication Date Source_Citation_Abbreviation: DEM Source_Contribution: This source contributed data that was used to generate a grid in ARC/INFO that represented the topographic elevation (surface elevation) in the area of the Ferris 25 study limit. Process_Step: Process_Description: Stratigraphic data were compiled in a relational database. These data were correlated and the coal and rock above, within, and below the Ferris 25 coal zone were labeled. Stratigraphic data for the coal and rock units within the Ferris 25 coal zone were downloaded from the database. These data were loaded into a EarthVision (EV) software program. The elevation at the top of the zone was then gridded in EV using the normal minimum tension grid option, four multiple data points (number of closest control points used for calculating a grid value), and a 500 x 500-meter grid spacing. The ARC/INFO DEM coverage (with 500 x 500-meter data spacing) was imported into EV, defined as a grid file, and clipped to the same lateral extent as the EV grid of the top of the coal zone. Using the EV formula processor, the top of the coal zone grid was subtracted from the surface elevation (DEM) grid to create a (minimum) overburden grid. An isopach map was then generated from this grid, with a constant contour interval of 100 ft, and saved to a file in ASCII format. The ASCII file was modified using a custom program called ismarc. The modified file was imported into ARC/INFO and generated as a polygon coverage using an Arc Macro Language (AML). The AML clipped the coverage to the study extent and assigned the overburden thickness polygons with values that are the average of the values of the bounding isopach lines (for example, a polygon defined by isopach lines of 100 and 200 ft was assigned an overburden thickness attribute of 150 ft). A new item was then added to the polygon attribute table and populated with text labels corresponding more closely to overburden categories that we were to use for coal resource tables and graphic display (0-100 ft, 100-200 ft, 200-300 ft, 300-400 ft, 400-500 ft, 500-1,000 ft, 1,000- 2,000 ft, 2,000-3,000 ft, 3,000-4,000 ft, and >4,000 ft). The polygon coverage was then dissolved based on the text labels. The final coverage was projected to geographic and made into a shapefile in ArcView. Process_Date: 1997 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Margaret Ellis Contact_Organization: USGS Energy Resources Team Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: Box 25046 MS 939 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303.236.7775 Contact_Electronic_Mail_Address: mellis@usgs.gov Hours_of_Service: Monday through Friday, 8:00 AM- 3:00 PM 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: 462 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: fer25ovb.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: 22.53721 Range_Domain_Maximum: 31796027.39746 Attribute: Attribute_Label: Perimeter Attribute_Definition: Perimeter of polygon Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 23.95395 Range_Domain_Maximum: 83981.91185 Attribute: Attribute_Label: Overburden Attribute_Definition: Overburden thickness in ft. Attribute_Definition_Source: User Defined Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Information Services Contact_Address: Address_Type: mailing address Address: Box 25286 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: 1-303-202-4693 Resource_Description: USGS Professional Paper 1625-A Distribution_Liability: This Compact Disc-Read Only Memory(CD-ROM) publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although all data and software published on this CD-ROM have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Shapefile Format_Version_Number: 1.0 Format_Information_Content: Geographic features and attributes Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://energy.cr.usgs.gov/coal/nca/rockiesgis.htm Offline_Option: Offline_Media: CD-ROM (2 disc set) Recording_Format: ISO 9660 Fees: See http://mapping.usgs.gov/esic/prices/index.html Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Energy Resources Team Contact_Address: Address_Type: mailing address Address: Box 25046 MS 939 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303.236.1647 Hours_of_Service: Monday through Friday, 8:00 AM- 3:00 PM Distribution_Liability: The US Geological Survey provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in this geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on USGS computers, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by the USGS. Metadata_Reference_Information: Metadata_Date: 19981215 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Energy Resources Team Contact_Person: Margaret Ellis Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: Box 25046 MS 939 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303.236.7775 Contact_Electronic_Mail_Address: mellis@usgs.gov Hours_of_Service: Monday through Friday, 8:00 AM- 3:00 PM Metadata_Standard_Name: FGDC CSDGM Metadata_Standard_Version: FGDC-STD-001-1998