Digital data of isopach contours and salt extent boundaries from previously published Regional Aquifer System Analysis (RASA) studies on the Northern Great Plains of Wyoming, North Dakota, South Dakota, Montana, and Nebraska
This GIS dataset presents contours and maps from previously published interpretations of hydrogeologic units of the northern Great Plains by Downey (1986). The original source publication was completed as a component of the United States Geological Survey’s (USGS) Regional Aquifer System Analysis (RASA) professional paper series. Isopach contour maps in this study delineate the upper surfaces of the Bakken Formation, Big Snowy Group, Deadwood Formation, Interlake Formation, Madison Group, Red River Formation as well as the depositional boundary extents of the Charles Salt, Prairie Salt, Opeche Salt, Pine Salt, Middle Madison Salt(s), and Dunham Salt. Geologic Period isopach contours included are Cambrian, Ordovician, Devonian, Pennsylvanian, Permian, Triassic, Jurassic, and Lower Cretaceous. The Northern Great Plains regional bedrock aquifer system is broadly composed of five major bedrock aquifer systems described in the source report, extending beneath large portions of Montana, North Dakota, South Dakota, Wyoming, and into Nebraska.
Find Related Datasets
Search by Tags
Click any tag below to search for similar datasets
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"010:12"
]
|
| contactPoint |
{
"fn": "Brooklyn Smout",
"@type": "vcard:Contact",
"hasEmail": "mailto:bsmout@usgs.gov"
}
|
| description | This GIS dataset presents contours and maps from previously published interpretations of hydrogeologic units of the northern Great Plains by Downey (1986). The original source publication was completed as a component of the United States Geological Survey’s (USGS) Regional Aquifer System Analysis (RASA) professional paper series. Isopach contour maps in this study delineate the upper surfaces of the Bakken Formation, Big Snowy Group, Deadwood Formation, Interlake Formation, Madison Group, Red River Formation as well as the depositional boundary extents of the Charles Salt, Prairie Salt, Opeche Salt, Pine Salt, Middle Madison Salt(s), and Dunham Salt. Geologic Period isopach contours included are Cambrian, Ordovician, Devonian, Pennsylvanian, Permian, Triassic, Jurassic, and Lower Cretaceous. The Northern Great Plains regional bedrock aquifer system is broadly composed of five major bedrock aquifer systems described in the source report, extending beneath large portions of Montana, North Dakota, South Dakota, Wyoming, and into Nebraska. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Digital Data",
"format": "XML",
"accessURL": "https://doi.org/10.5066/P14KMRL9",
"mediaType": "application/http",
"description": "Landing page for access to the data"
},
{
"@type": "dcat:Distribution",
"title": "Original Metadata",
"format": "XML",
"mediaType": "text/xml",
"description": "The metadata original format",
"downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.66bcff2bd34e03388281ba6a.xml"
}
]
|
| identifier | http://datainventory.doi.gov/id/dataset/USGS_66bcff2bd34e03388281ba6a |
| keyword |
[
"Bakken Formation",
"Big Snowy Group",
"Charles Salt",
"Cretaceous",
"Deadwood Formation",
"Devonian",
"Dunham Salt",
"Federal Geographic Data Committee",
"GeMS",
"Geologic Mapping Schema",
"Interlake Formation",
"Jurassic",
"Lower Cretaceous",
"Madison Group",
"Middle Madison Limestone",
"Montana",
"National Cooperative Geologic Map Program",
"Nebraska",
"North Dakota",
"Northern Great Plains",
"Opeche Salt",
"Ordovician",
"Pennsylvanian",
"Permian",
"Pine Salt",
"Prairie Salt",
"Red River Formation",
"South Dakota",
"Triassic",
"USGS:66bcff2bd34e03388281ba6a",
"Wyoming",
"aquifer",
"elevation",
"estimated thickness",
"geoscientificInformation",
"isopach contour",
"location",
"structure",
"structure contour",
"thickness contour",
"vector"
]
|
| modified | 2025-04-30T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
"@type": "org:Organization"
}
|
| spatial | -111.0059, 42.2285, -96.1523, 48.9802 |
| theme |
[
"geospatial"
]
|
| title | Digital data of isopach contours and salt extent boundaries from previously published Regional Aquifer System Analysis (RASA) studies on the Northern Great Plains of Wyoming, North Dakota, South Dakota, Montana, and Nebraska |
