Metadata: Identification_Information: Citation: Citation_Information: Originator: Susan J. Tewalt Publication_Date: 2000 Title: Potentially minable thickness 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 minable thickness for the Pond Creek coal zone in Kentucky, West Virginia, and Virginia. The coverage was created by gridding 4,391 points and contouring the grid with 1.17-ft intervals. The polygons have elevation values halfway between the bounding contour arc values. 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 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 region. This isopach contour dataset was used to calculate coal resources. This dataset honors data submitted for the asessment from the Kentucky Geological Survey; therefore contour lines may not match across State lines (see Process Steps). 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: coal structure 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: The point data used to create this map had a mean thickness of 2.9 feet with a standard deviation of 1.4 feet. The resulting grid had a mean of 2.5 feet and a standard deviation of 1.7 feet. The average absolute mean error was 0.11 feet, which is 1 percent of the range of values. 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 potentially minable thickness of Pond Creek coal. The source data are believed to be the most up to date at the time of collection. In Kentucky, map is based on existing data in the Kentucky Geological Survey coal information database (KCRIS) as of 1997. State agencies reviewed the dataset 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 Geological Survey Publication_Date: 1999 Title: Lek_thk.e00: ARC coverage of thickness 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 provided thickness polygons 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 thicknesses for the Pond Creek in West Virginia. 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 thickness information for the Pond Creek in Virginia. Process_Step: Process_Description: 1. All appropriate thickness data from KCRIS databases on Lower Elkhorn coal were plotted on 1:100,000-scale base maps and overlain with facies lines representing coal bed discontinuities. Coal thickness isolines were hand drawn for standard USGS thickness categories (Wood and others, 1983). Contours were drawn by KGS so that they did not cross facies boundaries, as these are considered discontinuities of the bed. Isolated values that were inconsistent with surrounding data were ignored in order to avoid overly complex maps. Additional contour line (24") added for area of Blue Gem mining, due to historical practice of mining thin beds of this coal by underground methods. 2. Vector polygons were digitized in ARC/INFO and encoded with category labels to create data source KY-1. Contributions by : G. Weisenfluh and E. Thacker. 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: Existing ARC/INFO coverage of Pond Creek thickness (KY-1) obtained from Kentucky Geological Survey were projected to Albers from UTM coordinates and clipped to State line file. Process_Date: 1999 Process_Step: Process_Description: Pond Creek thicknesses were searched from the Virginia database (VA-1) and merged with data searched from the West Virginia StratiFact database (WV-1). The resulting data were projected to Albers coordinates from geographic coordinates in EarthVision. Process_Date: 1999 Process_Step: Process_Description: Data were gridded using 325 meter cell size, isopach algorithm, extrapolation, exact z range, 4 neighboring point search, and a vertical faults file. Grid was contoured and examined. The final grid was contoured using 1.17-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. 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: Kentucky part of isopach file removed using ERASE with Kentucky thickness file clipped to State line. Deleted any extraneous arcs. Process_Date: 1999 Process_Step: Process_Description: Mapjoined clipped Kentucky thickness file with West Virginia and Virginia part of thickness cover. Process_Date: 1999 Process_Step: Process_Description: Thickness 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 geologic 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: 2901 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: c9120is.pat Entity_Type_Definition: polygon attribute table for C9120IS coverage Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: thick Attribute_Definition: An thickness value halfway between the bounding contour line values. Values of 0 indicate internal no-coal areas. Attribute_Definition_Source: this study Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: 0 thickness coal Enumerated_Domain: Enumerated_Domain_Value: 0.585 Enumerated_Domain_Value_Definition: < 1.17 feet Enumerated_Domain: Enumerated_Domain_Value: 1.745 Enumerated_Domain_Value_Definition: 1.17 - 2.34 feet Enumerated_Domain: Enumerated_Domain_Value: 2.167 Enumerated_Domain_Value_Definition: thickness value unique to area of "Blue Gem" coal, which is mined with thinner criteria. See Chapter G of PP1625-C for explanation. Enumerated_Domain: Enumerated_Domain_Value: 2.915 Enumerated_Domain_Value_Definition: 2.34 - 3.5 feet Enumerated_Domain: Enumerated_Domain_Value: 4.085 Enumerated_Domain_Value_Definition: 3.5 - 4.67 feet Enumerated_Domain: Enumerated_Domain_Value: 5.245 Enumerated_Domain_Value_Definition: 4.67 - 5.84 feet Enumerated_Domain: Enumerated_Domain_Value: 6.415 Enumerated_Domain_Value_Definition: 5.84 - 7.0 feet Enumerated_Domain: Enumerated_Domain_Value: 7.585 Enumerated_Domain_Value_Definition: 7.0 - 8.17 feet Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: is_cat Attribute_Definition: A unique code assigning thicknesses into USGS intervals specified in Wood and others (1983). Values of 0 indicate internal no-coal areas. Attribute_Definition_Source: this study Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 101 Enumerated_Domain_Value_Definition: '101' is 1.17 - 2.34 feet Enumerated_Domain: Enumerated_Domain_Value: 102 Enumerated_Domain_Value_Definition: '102' is 2.34 - 3.51 feet Enumerated_Domain: Enumerated_Domain_Value: 103 Enumerated_Domain_Value_Definition: '103' is 3.51 - 7.02 feet Enumerated_Domain: Enumerated_Domain_Value: 104 Enumerated_Domain_Value_Definition: '104' is 7.02 - 14 feet Enumerated_Domain_Value_Definition_Source: USGS 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; c9120is.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 thickness 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