Identification_Information:
	Citation:
		Citation_Information:
			Originator: United States Geological Survey (USGS) Central Region Energy Resources Team
			Publication_Date: 19990930
			Title: dkpts (Public Well Points for Decker Coalfield).
			Geospatial_Data_Presentation_Form: map
			Publication_Information:
				Publication_Place: Denver, CO
				Publisher: USGS Central Region Energy Resources Team
	Description:
		Abstract:
			This theme is a digital point coverage showing the location
			of non-confidential drill hole data used in the assessment of
			total coal resources in the Anderson-Canyon coal zone,
			Decker coalfield, Powder River Basin, Montana. This
			theme was created specifically for the National Coal
			Resources Assessment in the Northern Rocky Mountains
			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 stored in standardized formats,
			and being analyzed using a Geographic Information
			System
			(GIS).
		Supplemental_Information:
			This theme represents a digital point coverage showing the
			location of 263 non-confidential drill holes used in the
			assessment of total coal resources of the
			Anderson-Canyon coal zone in the Decker coal field,
			Montana.
			Most of the drill hole data used in the Decker
			coal field study was previously compiled in the U.S.
			Geological Survey National Coal Resources Data System
			(NCRDS), although some additional drill hole data not
			present in NCRDS was also incorporated into this study.
			These data were collated in a commercial relational
			database (Stratifact; GRG Corporation).  Subsequently, a
			process of point data verification and editing was initiated.
			These data were cross-checked with published or
			unpublished drill hole records (when available) that
			included information on drill hole location and surface
			elevation with accompanying geophysical logs, cuttings
			descriptions and/or core logs from which coal thickness
			and depth could be determined.  In the case of cuttings or
			core descriptions, coal thickness and depth were taken
			directly from the written reports.  When geophysical logs
			were used, however, coal thickness and depth were
			measured from original analog prints or copies of the
			geophysical logs. Types of geophysical logs typically
			used for coal measurements include natural-gamma
			(gamma ray), gamma-gamma density (bulk density) and
			resistivity (or resistance) logs.  Caliper logs, which measure
			variations in the drill hole diameter, were used in
			conjunction with density logs to verify that low density log
			deflections were in response to coal rather than drill hole
			washout. When no additional records other than those
			reported in NCRDS for a specific drill hole could be
			located, we compared the NCRDS information with data
			from wells nearby to determine the validity and usefulness
			of those data.
			Once the point data were collated and edited for
			stratigraphic and coal geologic content, the point data set
			was imported into ARCVIEW and converted to a shapefile
			for incorporation as a theme in the ARCVIEW project. Only
			public (non-confidential) data points in the Decker coal
			field (Montana) are included in this coverage.
			The point data theme is linked to a table that
			includes a USGS point identification number (internal
			designation); the source of the drill hole information
			(company or agency) and the published or alternative drill
			hole identification number; the surface elevation (in feet) of
			the drill hole; the total depth (in feet) of the drill hole; drill
			hole location reported by  section, township and range; the
			total, net coal thickness (in feet) for all coal beds in the
			Anderson-Canyon coal zone in each drill hole; the number
			of beds within the coal zone; the 7.5' quadrangle in which
			the well was drilled; the well type (coal exploratory or oil
			and gas test); and the drill hole location in coordinates of
			latitude and longitude.  In all cases, drill hole locations (x,y)
			in coordinates of latitude and longitude came directly from
			the National Coal Resources Data System (NCRDS), and
			thus, the accuracy of the well locations cannot be fully
			verified in all cases.
			Common abbreviations used in the sources of drill hole
			information include USGS for the U.S. Geological
			Survey; MBMG for the Montana Bureau of Mines and
			Geology; Bur of Rec or USBR for the U.S. Bureau of
			Reclamation; BLM for the Bureau of Land Management;
			and MMS for the Minerals Management Service.  In the
			case of oil and gas wells, the total depth as reported
			actually reflects the depth to which the drill hole record was
			interpreted for coal, rather than the total depth of the well.
	Time_Period_of_Content:
		Time_Period_Information:
			Single_Date/Time:
				Calendar_Date: 19980000
		Currentness_Reference: Publication Date
	Status:
		Progress: Complete
		Maintenance_and_Update_Frequency: None planned
	Spatial_Domain:
		Bounding_Coordinates:
			West_Bounding_Coordinate: -107.1597
			East_Bounding_Coordinate: -105.1811
			North_Bounding_Coordinate: 45.4791
			South_Bounding_Coordinate: 42.9840
	Keywords:
		Theme:
			Theme_Keyword_Thesaurus: None
			Theme_Keyword: Anderson-Canyon coal zone
			Theme_Keyword: Drill-hole data
		Place:
			Place_Keyword_Thesaurus: None
			Place_Keyword: Big Horn County
			Place_Keyword: Powder River County
			Place_Keyword: Rosebud County
			Place_Keyword: Decker coalfield
			Place_Keyword: Powder River Basin
			Place_Keyword: Northern Rocky Mountains and Great Plains
			Place_Keyword: Montana
	Access_Constraints: None
	Use_Constraints: None
	Point_of_Contact:
		Contact_Information:
			Contact_Organization_Primary:
				Contact_Organization: USGS Central Region Energy Resources Team
				Contact_Person: Steve Roberts
			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: 303.236.7788
	Native_Data_Set_Environment:
		ArcView version 3.0
		ARC/INFO 7.1.2
		SUNOS, 5.6 SUN4U UNIX
Data_Quality_Information:
	Attribute_Accuracy:
		Attribute_Accuracy_Report:
			Attributes were checked against coal quality data points
			and county lines; are shown to be accurate.
	Logical_Consistency_Report: Polygon features Present
	Completeness_Report:
		Data is limited to non-confidential drill holes penetrating
		the Anderson-Canyon coal zone in the Decker coalfield,
		Montana.
	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
					Publication_Time: Unknown
					Title: National Coal Resource Database system(NCRDS).
					Other_Citation_Details:
						U.S. Geological Survey, MS 956, Reston Virginia c/o M.D.
						Carter
			Type_of_Source_Media: digital
			Source_Time_Period_of_Content:
				Time_Period_Information:
					Single_Date/Time:
						Calendar_Date: Unknown
				Source_Currentness_Reference: Publication Date
			Source_Citation_Abbreviation: NCRDS
			Source_Contribution:
				This source provided the stratigraphic attributes within the
				dataset(Point-ID, top of Zone Elevation, Bottom of Zone
				Elevation, Surface Elevation, Total Depth, Coal Thickness,
				Number of Beds)
		Process_Step:
			Process_Description:
				Drill-hole data were compiled in  relational stratigraphic
				database software (Stratifact; GRG Corporation, Denver,
				CO), and pertinent information (e.g., location, drill-hole
				depth, etc.) was exported to an Excel formatted
				spreadsheet.  The Excel file was imported into Arcview,
				and converted to a shapefile for incorporation in the
				ARCVIEW project.  See supplemental information for
				description of data compilation procedure.
			Process_Date: 19980000
			Process_Contact:
				Contact_Information:
					Contact_Organization_Primary:
						Contact_Organization: USGS Central Region Energy Resources Team
						Contact_Person: Steve Roberts
					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: 303.236.7788
Spatial_Data_Organization_Information:
	Direct_Spatial_Reference_Method: Point
	Point_and_Vector_Object_Information:
		SDTS_Terms_Description:
			SDTS_Point_and_Vector_Object_Type: Point
			Point_and_Vector_Object_Count: 4372
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: wapts.dbf
			Entity_Type_Definition: Shapefile Attribute Table
			Entity_Type_Definition_Source: None
		Attribute:
			Attribute_Label: Ptid
			Attribute_Definition:
				Unique identifier assigned each data point in
				the database.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Unrepresentable_Domain: Character field
		Attribute:
			Attribute_Label: Td
			Attribute_Definition: Total depth of drill hole in feet.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.00
					Range_Domain_Maximum: 8444.00
		Attribute:
			Attribute_Label: Surfelev
			Attribute_Definition:
				Ground elevation at drill hole location in
				feet.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.0
					Range_Domain_Maximum: 5912.3
		Attribute:
			Attribute_Label: Topelev
			Attribute_Definition:
				Elevation (msl) of top of stratigraphic zone investigated in
				feet.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.00
					Range_Domain_Maximum: 5851.00
		Attribute:
			Attribute_Label: Botelev
			Attribute_Definition:
				Elevation (msl) of bottom of stratigraphic zone investigated
				in feet.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.00
					Range_Domain_Maximum: 5792.00
		Attribute:
			Attribute_Label: Origcthk
			Attribute_Definition:
				Total thickness of coal in stratigraphic zone investigated in
				feet.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.1
					Range_Domain_Maximum: 284.0
		Attribute:
			Attribute_Label: Nobeds
			Attribute_Definition:
				Number of coal beds in stratigraphic zone
				investigated.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 1
					Range_Domain_Maximum: 11
		Attribute:
			Attribute_Label: Moisture
			Attribute_Definition:
				Moisture content in percent of coal
				(as-received basis).
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.00
					Range_Domain_Maximum: 42.30
		Attribute:
			Attribute_Label: Percentash
			Attribute_Definition:
				Ash yield, in percent, of coal (as-received
				basis).
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.00
					Range_Domain_Maximum: 23.60
		Attribute:
			Attribute_Label: Totalsulfu
			Attribute_Definition: Total sulfur, in percent, of coal.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.00
					Range_Domain_Maximum: 2.40
		Attribute:
			Attribute_Label: Lbsofso2
			Attribute_Definition:
				Calculated value, pounds of SO2 (sulfur dioxide) per million
				BTU.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.00
					Range_Domain_Maximum: 7.88
		Attribute:
			Attribute_Label: Btu
			Attribute_Definition:
				Calorific value in British Thermal Units per pound of coal (
				as-received) ASTM, 1994).
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0
					Range_Domain_Maximum: 9950
		Attribute:
			Attribute_Label: Mmmfbtuu
			Attribute_Definition:
				Calculated value, moist-mineral matter free BTU per pound
				of coal (as-received) ASTM).
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0
					Range_Domain_Maximum: 10563
		Attribute:
			Attribute_Label: Antimony
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 2.659
		Attribute:
			Attribute_Label: Arsenic
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 18.702
		Attribute:
			Attribute_Label: Berylliu
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 3.310
		Attribute:
			Attribute_Label: Cadmium
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 0.901
		Attribute:
			Attribute_Label: Chromium
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 49.650
		Attribute:
			Attribute_Label: Cobalt
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 9.980
		Attribute:
			Attribute_Label: Lead
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 17.078
		Attribute:
			Attribute_Label: Manganese
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 208.800
		Attribute:
			Attribute_Label: Mercury
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 2.035
		Attribute:
			Attribute_Label: Nickel
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 33.413
		Attribute:
			Attribute_Label: Selenium
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 16.000
		Attribute:
			Attribute_Label: Uranium
			Attribute_Definition:
				Trace element in parts per million on a whole
				coal basis.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Range_Domain:
					Range_Domain_Minimum: 0.000
					Range_Domain_Maximum: 11.740
		Attribute:
			Attribute_Label: Completeness
			Attribute_Definition: See top of zone elevation.
			Attribute_Definition_Source: User Defined
			Attribute_Domain_Values:
				Unrepresentable_Domain: Character field
Distribution_Information:
	Distributor:
		Contact_Information:
			Contact_Organization_Primary:
				Contact_Organization: USGS Central Region 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
	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: 19980000
	Metadata_Review_Date: 19990000
	Metadata_Future_Review_Date: 19990000
	Metadata_Contact:
		Contact_Information:
			Contact_Organization_Primary:
				Contact_Organization: USGS Central Region Energy Resources Team
				Contact_Person: Steve Roberts
			Contact_Address:
				Address_Type: mailing address
				Address:
					Box 25046 MS 939
					Denver Federal Center
				City: Denver
				State_or_Province: CO
				Postal_Code: 80225-0046
			Contact_Voice_Telephone: 303.236.7788
	Metadata_Standard_Name: FGDC CSDGM
	Metadata_Standard_Version: 19940608