Metadata: Identification_Information: Citation: Citation_Information: Originator: Susan J. Tewalt Publication_Date: 2000 Title: Structure contours of the Pond Creek Coal Zone in Kentucky, West Virginia, and Virginia Larger_Work_Citation: Citation_Information: Originator: Northern and Central Appalachian Basin Coal Regions Assessment Team Publication_Date: 2000 Title: 2000 Resource Assessment of Selected Coal Beds and Zones in the Northern and Central Appalachian Basin Coal Regions Series_Information: Series_Name: U.S. Geological Survey Professional Paper Issue_Identification: PP1625-C Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://greenwood.cr.usgs.gov/pub/ppapers/p1625c/ Description: Abstract: This dataset is a polygon coverage of structure contours (elevation) for the Pond Creek coal zone in Kentucky, West Virginia, and Virginia. The surface was created by gridding information from 137,355 points and contouring the grid into 100-ft intervals. Many of the points were derived from existing structure contoure maps obtained from Kentucky and West Virgina. In Virginia, data were searched from the StratiFact database created from the National Coal Resource Data System (NCRDS). Data from specific quadrangles in the StratiFact database from the West Virginia Geological and Economic Survey were also searched. The grid was created in EarthVision, was contoured and imported to ARC/INFO as polygons using an AML. State line discrepancies were expected and rectified. Offsets existed because State contours were created from more local, not regional data sets. The data from the West Virginia Geological and Economic Survey are not final in nature, as correlation of the beds in this stratigraphic sequence is ongoing. Thus the nature of this coverage is necessarily provisional. The polygons have elevation values halfway between values of the bounding contour arc values, therefore the polygon values will end in '50'. Introduction: This map is one of many Geographic Information System (GIS) products of the National Coal Assessment that is being conducted by the U.S. Geological Survey in cooperation with State geological surveys and other Federal and State agencies. The Middle Pennsylvanian Pottsville Group Pond Creek coal is an important resource in the Central Appalachian Basin coal region and has been mined for the last one hundred years. The Pond Creek coal is most commonly referred to as the Lower Elkhorn in Kentucky, the Imboden in Virginia, and the Eagle in West Virginia. The Pond Creek coal and its equivalent beds occur within a zone of coal-bearing rocks that contain a number of distinct coals. This resource model for the Pond Creek coal must be considered provisional, because the correlation of the zone continues to be evaluated in West Virginia. Purpose: The purpose of Professional Paper 1625 is to release the interpretation of assessment and modeling data for the the top-producing coal beds in the northern and central Appalachian Basin coal regions. This structure contour dataset was used to calculate overburden thickness for classifying coal resources in this study. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Currentness_Reference: data collection and collation period Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -84.336 East_Bounding_Coordinate: -80.629 North_Bounding_Coordinate: 38.387 South_Bounding_Coordinate: 36.583 Keywords: Theme: Theme_Keyword_Thesaurus: Coal Resource Classification of the U.S. Geological Survey, USGS circular 891. Theme_Keyword: Eastern Energy Team Theme_Keyword: energy Theme_Keyword: power Theme_Keyword: resources Theme_Keyword: coal Theme_Keyword: coal resources Theme_Keyword: structure Theme_Keyword: elevation Theme_Keyword: bituminous Theme_Keyword: outcrop Theme_Keyword: USGS Theme_Keyword: Kentucky Geological Survey (KGS) Theme_Keyword: West Virginia Geological and Economic Survey (WVGES) Theme_Keyword: Virginia Division of Mineral Resources (VDMR) Theme_Keyword: Virginia Department of Mines, Minerals and Resources Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: United States Place_Keyword: Kentucky Place_Keyword: West Virginia Place_Keyword: Virginia Place_Keyword: Appalachians Place_Keyword: BELL County Place_Keyword: BOONE County Place_Keyword: BREATHITT County Place_Keyword: BUCHANAN County Place_Keyword: CLAY County Place_Keyword: DICKENSON County Place_Keyword: FAYETTE County Place_Keyword: FLOYD County Place_Keyword: HARLAN County Place_Keyword: JOHNSON County Place_Keyword: KANAWHA County Place_Keyword: KNOX County Place_Keyword: LAUREL County Place_Keyword: LEE County Place_Keyword: LETCHER County Place_Keyword: LINCOLN County Place_Keyword: LOGAN County Place_Keyword: MARTIN County Place_Keyword: MCCREARY County Place_Keyword: MCDOWELL County Place_Keyword: MINGO County Place_Keyword: NICHOLAS County Place_Keyword: NORTON County Place_Keyword: OWSLEY County Place_Keyword: PIKE County Place_Keyword: RALEIGH County Place_Keyword: WAYNE County Place_Keyword: WHITLEY County Place_Keyword: WISE County Place_Keyword: WOLFE County Place_Keyword: WYOMING County Stratum: Stratum_Keyword_Thesaurus: Geologic Names Unit Lexicon (GNULEX), 1996; Stratigraphic Nomenclature Databases for the United States, It's Possessions, and Territories, U.S. Geological Survey Digital Data Series DDS-6, release 3. Stratum_Keyword: Pennsylvanian Stratum_Keyword: Middle Pennsylvanian Stratum_Keyword: Pikeville Formation Stratum_Keyword: Kanawha Formation Stratum_Keyword: Wise Formation Stratum_Keyword: Pottsville Group Stratum_Keyword: Breathitt Group Stratum_Keyword: Pond Creek Coal Stratum_Keyword: Lower Elkhorn Coal Stratum_Keyword: Eagle Coal Stratum_Keyword: Imboden Coal Stratum_Keyword: Little Creek Coal Stratum_Keyword: Blue Gem Coal Stratum_Keyword: Bruin Coal Stratum_Keyword: Campbell Creek Coal Stratum_Keyword: Freeburn Coal Stratum_Keyword: Howard Coal Stratum_Keyword: Little Eagle Coal Stratum_Keyword: No. 2 Gas Stratum_Keyword: Path Fork Coal Stratum_Keyword: Rich Mountain Coal Stratum_Keyword: Straight Creek Coal Stratum_Keyword: Upper Bolling Coal Stratum_Keyword: Vires Coal Stratum_Keyword: Wallins Creek Coal Stratum_Keyword: Wolf Creek Coal Access_Constraints: None Use_Constraints: To be used for regional analysis only. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Susan J. Tewalt (compiler) Contact_Organization: U.S. Geological Survey, Eastern Energy Resources Team Contact_Address: Address_Type: mailing address Address: MS 956 National Center City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6437 Data_Set_Credit: State Geological Surveys maintain the most recent coal maps and have provided the USGS with the most up to date data at the time of the assessment. Primary contacts at the State surveys for this product include: KY- G. Weisenfluh; WV- B. M. Blake, Jr.; VA- R. Sites. Information for Kentucky can be found online at: http://www.uky.edu/KGS/home.htm. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Deductive_Estimate: Surface elevations of boreholes or measurement points were not compared to any digital or paper reference. Therefore elevations of the coal zone in this data set have an unknown amount of error arising from the subtraction of depth from the topographic surface. Logical_Consistency_Report: Topology for this data set was built using the CLEAN command within ARC/INFO, version 7.2.1. This command eliminates dangling nodes, calculates intersections of arcs, eliminates redundant arcs, and creates a polygon attribute table. This data set does not contain dangles or redundant arcs. Completeness_Report: This dataset is a representation of the structure contours of Pond Creek coal. The source maps used are believed to be the most up to date at the time of collection. State agencies reviewed the data set for completeness. Tennessee is not included in this dataset. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1999 Title: ARC coverage c9120oc Source_Scale_Denominator: 100000 Type_Of_Source_Media: disc Source_Time_Period_Of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1999 Source_Currentness_Reference: Publication Date Source_Citation_Abbreviation: PC-1 Source_Contribution: This file gave outcrop/resource areas for the Pond Creek in Kentucky, Virginia, and West Virginia. Source_Information: Source_Citation: Citation_Information: Originator: Kentucky Geologic Survey Publication_Date: 1999 Title: Lek_cont.e00: ARC coverage in export format for Lower Elkhorn (Pond Creek) coal in Kentucky Source_Scale_Denominator: 24000 Type_Of_Source_Media: online Source_Time_Period_Of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1999 Source_Currentness_Reference: Publication Date Source_Citation_Abbreviation: KY-1 Source_Contribution: This file gave the elevations for Pond Creek coal in Kentucky. Source_Information: Source_Citation: Citation_Information: Originator: West Virginia Geological and Economic Survey Publication_Date: 1998 Title: WVGES StratiFact database Source_Scale_Denominator: 24000 Type_Of_Source_Media: online Source_Time_Period_Of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1980 - 1998 Source_Currentness_Reference: Publication Date Source_Citation_Abbreviation: WV-1 Source_Contribution: This database provided elevations for the Pond Creek in West Virginia. Source_Information: Source_Citation: Citation_Information: Originator: West Virginia Geological and Economic Survey Publication_Date: 1998 Title: WVGES maps of Pond Creek (Eagle) coal structure by 7.5 minute quadrangle. Source_Scale_Denominator: 24000 Type_Of_Source_Media: paper Source_Time_Period_Of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1980 - 1998 Source_Currentness_Reference: Publication Date Source_Citation_Abbreviation: WV-2 Source_Contribution: These maps provided elevations for the Pond Creek in West Virginia for the following quadrangles: Barnabus, Majestic, Matewan, Delbarton, Trace, Gilbert, Wharncliffe, Clothier, Henlawson, Chapmanville. Source_Information: Source_Citation: Citation_Information: Originator: West Virginia Geological and Economic Survey Publication_Date: 1998 Title: WVGES maps of Pond Creek (Eagle) coal structure by 7.5 minute quadrangle. Source_Scale_Denominator: 24000 Type_Of_Source_Media: mylar Source_Time_Period_Of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1980 - 1998 Source_Currentness_Reference: Publication Date Source_Citation_Abbreviation: WV-3 Source_Contribution: These maps provided elevations for the Pond Creek in West Virginia for the following quadrangles: Gilboa, Gauley Bridge, Summersville, Craigsville, Lockwwod, Gilboa. Source_Information: Source_Citation: Citation_Information: Originator: Virginia Division of Mineral Resources Publication_Date: 1998 Title: Pond Creek data (Imboden coal) from National Coal Resources Data System in StratiFact. Source_Scale_Denominator: 24000 Type_Of_Source_Media: online Source_Time_Period_Of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1980 - 1986 Source_Currentness_Reference: Publication Date Source_Citation_Abbreviation: VA-1 Source_Contribution: This database provided all elevation information for the Pond Creek in Virginia. Process_Step: Process_Description: 1. All appropriate KCRIS elevation data were posted by KGS on 1:100,000-scale base maps. For areas with inadequate control points that were proximal to the outcrop, additional were sampled from the geologic quadrangle maps. For areas with inadequate control points and the coal bed was below drainage, contours were estimated from the trend of structure contours of overlying beds and estimates of interburden distance. 2. Plotted point data were hand contoured with an interval of 100 ft. These vectors, as well as those interpolated from overlying beds were digitized in ARC/INFO, and encoded according to contour level to create data source KY-1. Contributions by : E. Thacker and J. Esterle. Process_Date: 1998 Process_Step: Process_Description: NCRDS data downloaded for Virginia (VA-1). Pond Creek (Imboden coal in Virginia) data were checked against original records for the Appalachia 7.5' quad (which had been verified and correlated by VDMR). Correlations for the Pond Creek were verified or created by USGS for the remainder of the Virginia dataset. Process_Date: 1998 Process_Step: Process_Description: All maps (WV-2, WV-3) were manually digitized on a tablet using ARC/INFO. Arcs were created through manual labelling and editing in order to create topology. Process_Date: 1998 Process_Step: Process_Description: ARC/INFO coverages of structure contour lines from Kentucky and West Virginia on the Pond Creek coal bed were converted to points (using arcpoint) with a 250 meter weed tolerance and the elevation attribute. Process_Date: 1999 Process_Step: Process_Description: Pond Creek elevations were searched from the Virginia database (VA-1) and merged with data searched from the West Virginia StratiFact database (WV-1). Points in West Virginia that overlapped with source WV-2 were deleted in EarthVision using the graphic editor. The resulting data were projected to Albers coordinates from geographic coordinates and were appended to the points file culled from digitized lines (previous process step), then input to EarthVision as a new scattered data file. Process_Date: 1999 Process_Step: Process_Description: Data were gridded using 325 meter cell size, minimum tension algorithm, extrapolation, exact z range, 4 neighboring point search, and a vertical faults file. Grid was contoured and examined. The input point file was modified by deleting points along State and some county lines within States in order to rectify offsets of the lines. The final grid was contoured using 100-foot intervals and made into an ASCII file. Process_Date: 1999 Process_Step: Process_Description: ASCII contour lines imported to ARC/INFO as polygons using ARC AML from Illinois State Geological Survey, clipping with a simple polygon and using the fault file used in the gridding step. Process_Date: 1999 Process_Step: Process_Description: File was manually edited to fix polygons with no labels and erroneous labels. Process_Date: 1999 Process_Step: Process_Description: Structure coverage was clipped to resource assessment areas and updated with internal no-coal areas. Process_Date: 1999 Process_Step: Process_Description: This dataset was edited to resolve inconsistencies and to incorporate revisions. Polygon topology was built and attributed using the codes described within this document. Process_Date: 1999 Process_Step: Process_Description: Projected to geographic coordinates. Process_Date: 1999 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: 3255 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0001 Longitude_Resolution: 0.0001 Geographic_Coordinate_Units: Decimal Degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 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: c9120st.pat Entity_Type_Definition: polygon attribute table for C9120ST coverage Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: elev_st Attribute_Definition: An elevation value halfway between the bounding contour line values; ends in 50. Values of -999 indicate internal no-coal areas. Attribute_Definition_Source: this study Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 50 Range_Domain_Maximum: 3050 Attribute_units_of_measure: feet Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: 50 Attribute_Value_Accuracy_Explanation: half of one contour interval Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Susan J. Tewalt (compiler) Contact_Organization: U.S. Geological Survey, Eastern Energy Resources Team Contact_Address: Address_Type: mailing address Address: MS 956 National Center City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6447 Resource_Description: USGS Professional Paper 1625-C: Chapter G; c9120st.e00 Distribution_Liability: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although these data have been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data, software, or related materials. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Format_Version_Number: 7.2.1 Format_Information_Content: Polygonal coal structure coverage Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://greenwood.cr.usgs.gov/pub/ppapers/p1625c/ Fees: none Metadata_Reference_Information: Metadata_Date: 20000403 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Susan J. Tewalt (compiler) Contact_Organization: U.S.Geological Survey, Eastern Energy Resources Team Contact_Address: Address_Type: mailing address Address: MS 956 National Center City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6437 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998