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Allison Dombrowski (Former Employee)

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The National Geologic Map Database (NGMDB)

The National Geologic Map Database (NGMDB) is a distributed archive of geoscience information for the Nation. It was mandated by the Geologic Mapping Act of 1992 and is cooperatively built and maintained by the USGS and State Geological Surveys. We welcome you to explore the archive, view the maps, and help us to improve this resource.
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Core Science Systems Mission Area, National Cooperative Geologic Mapping Program
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The National Geologic Map Database (NGMDB)

The National Geologic Map Database (NGMDB) is a distributed archive of geoscience information for the Nation. It was mandated by the Geologic Mapping Act of 1992 and is cooperatively built and maintained by the USGS and State Geological Surveys. We welcome you to explore the archive, view the maps, and help us to improve this resource.
Learn More

USGS Geochron: A Database of Geochronological and Thermochronological Dates and Data (ver. 3.0, May 2024)

USGS Geochron is a database of geochronological and thermochronological dates and data. The data set contains published ages, dates, analytical information, sample metadata including location, and source citations. The following analytical techniques are represented in the data set: 40Ar/39Ar, K-Ar, U-Th-Pb, Sm-Nd, Rb-Sr, Lu-Hf, fission track, and luminescence. This data set incorporates data prev

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Community for Data Integration (CDI), Geosciences and Environmental Change Science Center

Science and Products

link
NGMDB Icon

The National Geologic Map Database (NGMDB)

The National Geologic Map Database (NGMDB) is a distributed archive of geoscience information for the Nation. It was mandated by the Geologic Mapping Act of 1992 and is cooperatively built and maintained by the USGS and State Geological Surveys. We welcome you to explore the archive, view the maps, and help us to improve this resource.
By
Core Science Systems Mission Area, National Cooperative Geologic Mapping Program
link

The National Geologic Map Database (NGMDB)

The National Geologic Map Database (NGMDB) is a distributed archive of geoscience information for the Nation. It was mandated by the Geologic Mapping Act of 1992 and is cooperatively built and maintained by the USGS and State Geological Surveys. We welcome you to explore the archive, view the maps, and help us to improve this resource.
Learn More

USGS Geochron: A Database of Geochronological and Thermochronological Dates and Data (ver. 3.0, May 2024)

USGS Geochron is a database of geochronological and thermochronological dates and data. The data set contains published ages, dates, analytical information, sample metadata including location, and source citations. The following analytical techniques are represented in the data set: 40Ar/39Ar, K-Ar, U-Th-Pb, Sm-Nd, Rb-Sr, Lu-Hf, fission track, and luminescence. This data set incorporates data prev

By
Community for Data Integration (CDI), Geosciences and Environmental Change Science Center
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