Name: coal_fields

Display Field: NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This dataset is a polygon shapefile representing the most recent update of the coal fields of the conterminous United States. Scale of data is 1:5,000,000. This publication is based on a USGS paper map that was a representation of the coal fields and major regions of the time (Trumbull, 1960). Trumbull's 1960 map was digitized and coal fields from the Gulf Coast were added to create USGS OFR 96-92, Coal Fields of the Conterminous United States (Tully, 1996). Tully's (1996) publication consisted of a map in pdf format that could be printed, and an ArcInfo coverage of the coal fields, attributed with rank and potential economic use (minability) of the coal. This new dataset includes a pdf showing updated coal fields and a shapefile that contains attributes on coal rank (without regard to outdated economic standards), province, name, and age. The data used to update Tully's (1996) digital map was collected from the National Coal Resource Assessment (NCRA) regional Professional Papers produced by the USGS and from AAPG Discovery Series 14/Studies in Geology 62, all of which were conducted by USGS geologists and professional staff. A small number of field names were added and or updated in the western states of Washington, Oregon, California, Utah, Colorado and New Mexico using additional coal resource literature.The full study is available from USGS: https://doi.org/10.3133/ofr20121205

Copyright Text: U.S. Geological Survey (USGS)

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -2259154.8701
YMin: 625604.434800001
XMax: -1475821.0813
YMax: 1333994.7462
Spatial Reference: 102003 (102003)

Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True

Global ID Field:

Type ID Field: RANK

Fields:

• OBJECTID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• AREA (type: esriFieldTypeDouble, alias: AREA, SQL Type: sqlTypeOther, nullable: true, editable: true)
• PERIMETER (type: esriFieldTypeDouble, alias: PERIMETER, SQL Type: sqlTypeOther, nullable: true, editable: true)
• PROVINCE (type: esriFieldTypeString, alias: PROVINCE, SQL Type: sqlTypeOther, length: 31, nullable: true, editable: true)
• NAME (type: esriFieldTypeString, alias: NAME, SQL Type: sqlTypeOther, length: 36, nullable: true, editable: true)
• AGE (type: esriFieldTypeString, alias: AGE, SQL Type: sqlTypeOther, length: 30, nullable: true, editable: true)
• RANK (type: esriFieldTypeString, alias: RANK, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Types:

ID: Subbituminous
Name: Subbituminous
Domains:

Templates:

Name: Subbituminous
Description:
Drawing Tool: esriFeatureEditToolNone
Prototype:

Attributes:

• RANK: Subbituminous

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ID: Medium and High Volatile Bituminous
Name: Medium and High Volatile Bituminous
Domains:

Templates:

Name: Medium and High Volatile Bituminous
Description:
Drawing Tool: esriFeatureEditToolNone
Prototype:

Attributes:

• RANK: Medium and High Volatile Bituminous

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ID: Lignite
Name: Lignite
Domains:

Templates:

Name: Lignite
Description:
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Prototype:

Attributes:

• RANK: Lignite

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Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 8/26/2025 2:24:19 PM

Schema Last Edit Date: 8/26/2025 2:24:19 PM

Data Last Edit Date: 8/25/2025 9:31:37 PM

Supported Operations:   Query   Query Pivot   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat