Geologic Map Schema (GeMS) version of the State Geologic Map Compilation (SGMC) Geodatabase of the Conterminous United States
This data release provides a Geologic Map Schema (GeMS, USGS NCGMP, 2020) version of the State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (Horton and others, 2017). The SGMC provides spatial data for 48 state geologic maps that range from 1:50,000 to 1:1,000,000 scale. The GeMS version of the SGMC provides updated data for Arkansas, Mississippi, Missouri, New Mexico, Ohio, Oklahoma, Oregon, and New York, as well as corrections to the original SGMC. Geologic units remain unreconciled across state boundaries, and for states that have bedrock and surficial geologic maps, only the bedrock map is represented in this dataset. SGMC tables and (or) attribute fields that did not conform to the GeMS standard, such as standardized lithology, age, and stratigraphy information, are retained as non-required GeMS elements.
The GeMS conversion of the SGMC predates development of the USGS Cooperative National Geologic Map (CNGM), which also provides GeMS versions of state geologic maps. Because these efforts occurred at different times by different programs, variations between the GeMS versions of the SGMC and the CNGM may exist.
References:
Horton, J.D., San Juan, C.A., and Stoeser, D.B, 2017, The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (ver. 1.1, August 2017): U.S. Geological Survey Data Series 1052, 46 p., https://doi.org/10.3133/ds1052.
U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://doi.org//10.3133/tm11B10.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "John D. Horton", "@type": "vcard:Contact", "hasEmail": "mailto:jhorton@usgs.gov" } |
| description | This data release provides a Geologic Map Schema (GeMS, USGS NCGMP, 2020) version of the State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (Horton and others, 2017). The SGMC provides spatial data for 48 state geologic maps that range from 1:50,000 to 1:1,000,000 scale. The GeMS version of the SGMC provides updated data for Arkansas, Mississippi, Missouri, New Mexico, Ohio, Oklahoma, Oregon, and New York, as well as corrections to the original SGMC. Geologic units remain unreconciled across state boundaries, and for states that have bedrock and surficial geologic maps, only the bedrock map is represented in this dataset. SGMC tables and (or) attribute fields that did not conform to the GeMS standard, such as standardized lithology, age, and stratigraphy information, are retained as non-required GeMS elements. The GeMS conversion of the SGMC predates development of the USGS Cooperative National Geologic Map (CNGM), which also provides GeMS versions of state geologic maps. Because these efforts occurred at different times by different programs, variations between the GeMS versions of the SGMC and the CNGM may exist. References: Horton, J.D., San Juan, C.A., and Stoeser, D.B, 2017, The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (ver. 1.1, August 2017): U.S. Geological Survey Data Series 1052, 46 p., https://doi.org/10.3133/ds1052. U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://doi.org//10.3133/tm11B10. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P1A3DQZK", "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.a3d298d7-3b4f-45aa-92c1-72dedb292af2.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_a3d298d7-3b4f-45aa-92c1-72dedb292af2 |
| keyword |
[ "Alabama", "Arizona", "Arkansas", "California", "Colorado", "Connecticut", "Delaware", "Florida", "GGGSC", "GeMS", "Geologic Map Schema", "Geology, Geophysics and Geochemistry Science Center", "Georgia", "Idaho", "Illinois", "Indiana", "Iowa", "Kansas", "Kentucky", "Louisiana", "MRP", "Maine", "Maryland", "Massachusetts", "Michigan", "Mineral Resources Program", "Minnesota", "Mississippi", "Missouri", "Montana", "NCGMP", "NGMDB", "National Cooperative Geologic Mapping Program", "National Geologic Map Database", "Nebraska", "Nevada", "New Hampshire", "New Jersey", "New Mexico", "New York", "North Carolina", "North Dakota", "Ohio", "Oklahoma", "Oregon", "Pennsylvania", "Rhode Island", "South Carolina", "South Dakota", "Tennessee", "Texas", "U.S. Geological Survey", "USGS", "USGS:a3d298d7-3b4f-45aa-92c1-72dedb292af2", "Utah", "Vermont", "Virginia", "Washington", "West Virginia", "Wisconsin", "Wyoming", "age", "bedrock geologic units", "data services", "dike", "fault", "fold", "geographic information systems", "geologic contacts", "geologic map", "geologic maps", "geologic time periods", "geology", "geoscientificInformation", "geospatial datasets", "igneous rocks", "metamorphic rocks", "sedimentary rocks", "structural geology", "surficial geologic units", "unconsolidated deposits" ] |
| modified | 2026-05-15T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -125, 24, -67, 49 |
| theme |
[ "geospatial" ] |
| title | Geologic Map Schema (GeMS) version of the State Geologic Map Compilation (SGMC) Geodatabase of the Conterminous United States |
