Identification_Information:
	Citation:
		Citation_Information:
			Originator: United States Geological Survey (USGS) Central Region Energy Resources Team
			Publication_Date: 19990930
			Title: Rsbnd.shp (Boundary for the Colstrip coal field boundary and the Rosebud-Robinson coal zone)
			Publication_Information:
				Publication_Place: Denver
				Publisher: USGS Central Region Energy Resources Team
	Description:
		Abstract:
			This ArcView shapefile contains a polygon
			representation of the Colstrip coalfield boundary and the
			Rosebud-Robinson coal zone resource assessment area..
			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
			collected and stored in standardized formats, and being
			analyzed using a Geographic Information System (GIS).
		Supplemental_Information:
			The Colstrip coal field boundary theme represents a digital
			polygon coverage showing the boundary of the Colstrip
			coal field, Montana, as defined in the National Coal
			Resource Assessment (NCRA) project of the U.S.
			Geological Survey.  The coverage also represents the area
			of coal resource assessment for the Rosebud-Robinson
			coal zone (Tertiary Fort Union Formation) in the Montana
			part of the Powder River Basin.  The areal extent of the
			coverage is defined by the boundaries of the Crow and
			Northern Cheyenne Indian Reservations to the southwest
			and south, respectively, by the outcrop trace (or contact
			with clinker) of the Robinson (or lower Robinson) coal bed
			in the western and northwestern part of the Colstrip coal
			field, and by the Rosebud coal bed outcrop (or clinker
			contact) in the north-central and eastern parts of the coal
			field.  The Robinson (or lower Robinson) coal bed defines
			the outcrop limits of the coal field in the Hardin 30 x 60'
			quadrangle whereas the Rosebud coal bed defines the
			outcrop limits of the coal field in the Lame Deer 30' x 60'
			quadrangle.
			This polygon coverage was developed in
			ARC/INFO by joining digital line (arc) coverages of the
			Rosebud and Robinson coal bed outcrops (or clinker
			contacts) with a line (arc) coverage defining the
			boundaries of the Crow and Northern Cheyenne Indian
			Reservations.
			The line coverages for the Rosebud and Robinson coal
			bed were arbitrarily joined by adding a north-south arc
			connecting the two outcrop traces at the boundary
			between the Hardin and Lame Deer 30' x 60' quadrangles.
			At the eastern limit of the Rosebud coal bed outcrop, a
			north-south line (arc) was arbitrarily added to connect the
			outcrop with the boundary of the Northern Cheyenne
			Indian Reservation to the south, thus forming a closed area
			for polygon coverage development.  The composite
			(joined) line coverage was subsequently built as a polygon
			coverage, generalized using a weed tolerance of 30
			meters to reduce file size, and converted to a shapefile for
			incorporation as a theme in  the ARCVIEW project.
	Time_Period_of_Content:
		Time_Period_Information:
			Single_Date/Time:
				Calendar_Date: 19990000
		Currentness_Reference: Publication Date
	Status:
		Progress: Complete
		Maintenance_and_Update_Frequency: None planned
	Spatial_Domain:
		Bounding_Coordinates:
			West_Bounding_Coordinate: -107.2459
			East_Bounding_Coordinate: -106.4404
			North_Bounding_Coordinate: 45.9821
			South_Bounding_Coordinate: 45.6728
	Keywords:
		Theme:
			Theme_Keyword_Thesaurus: None
			Theme_Keyword: Rosebud-Robinson coal zone
			Theme_Keyword: Coal resource assessment
		Place:
			Place_Keyword_Thesaurus: None
			Place_Keyword: Big Horn County
			Place_Keyword: Rosebud County
			Place_Keyword: Treasure County
			Place_Keyword: Montana
			Place_Keyword: Powder River Basin
			Place_Keyword: Northern Rocky Mountains and Great Plains
	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:
		SunOS, 5.51 sun4d UNIX
		ArcView version 3.0
		ARC/INFO 7.1.2
Data_Quality_Information:
	Attribute_Accuracy:
		Attribute_Accuracy_Report: No test for accuracy.
	Logical_Consistency_Report: Polygon features present
	Completeness_Report: The theme is limited to the Rosebud-Robinson Coal Zone.
	Positional_Accuracy:
		Horizontal_Positional_Accuracy:
			Horizontal_Positional_Accuracy_Report:
				Limited to software coordinates precision for geographic
				coordinates.
	Lineage:
		Source_Information:
			Source_Citation:
				Citation_Information:
					Originator: USGS
					Publication_Date: 19990000
					Title: USGS
					Geospatial_Data_Presentation_Form: map
			Type_of_Source_Media: paper
			Source_Time_Period_of_Content:
				Time_Period_Information:
					Single_Date/Time:
						Calendar_Date: 19990000
				Source_Currentness_Reference: Publication Date
			Source_Citation_Abbreviation: None
			Source_Contribution:
				This source provided the necessary information needed to
				define the Colstrip coalfield, and the coal resource
				assessment area for the  Rosebud-Robinson coal zone.
		Process_Step:
			Process_Description:
				This polygon coverage was developed in ARC/INFO by
				joining digital line (arc) coverages of the Rosebud and
				Robinson coal bed outcrops (or clinker contacts) with a
				line (arc) coverage defining the boundaries of the Crow
				and Northern Cheyenne Indian Reservations.  The line
				coverages for the Rosebud and Robinson coal bed were
				arbitrarily joined by adding a north-south arc connecting the
				two outcrop traces at the boundary between the Hardin
				and Lame Deer 30' x 60' quadrangles.  At the eastern limit
				of the Rosebud coal bed outcrop, a north-south line (arc)
				was arbitrarily added to connect the outcrop with the
				boundary of the Northern Cheyenne Indian Reservation to
				the south, thus forming a closed area for polygon coverage
				development.  The composite (joined) line coverage was
				subsequently built as a polygon coverage, generalized
				using a weed tolerance of 30 meters to reduce file size,
				and converted to a shapefile for incorporation as a theme
				in  the ARCVIEW project.
			Process_Date: 19990000
			Process_Time: 00000000
			Process_Contact:
				Contact_Information:
					Contact_Person_Primary:
						Contact_Person: Steve Roberts
						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
					Contact_Voice_Telephone: 303.236.7788
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: 1
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: rsbnd.dbf
			Entity_Type_Definition: Shapefile Attribute Table
			Entity_Type_Definition_Source: None
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: 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
				Country: USA
			Contact_Voice_Telephone: 303.236.7788
	Metadata_Standard_Name: FGDC CSDGM
	Metadata_Standard_Version: 19940608