National Geochronological Database

Online link https://mrdata.usgs.gov/geochron/
Description Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats.
Originators Sloan, Jan (Editor); Henry, Christopher D. (Editor); Hopkins, Melanie J. (Editor); Ludington, Stephen D. (Editor); Zartman, Robert E. (Compiler); Bush, Charles A. (Compiler); and Abston, Carl C. (Compiler)
Publication U.S. Geological Survey Open-File Report 03-236

Related topics

States or counties

Sample locations in the conterminous United States
Sample locations in the conterminous United States

Geospatial Web Services (OGC)

Format Content Service URL
WMS Sample characteristics and geologic age information https://mrdata.usgs.gov/services/geochron?request=GetCapabilities&service=WMS&version=1.3.0
WFS Sample characteristics and geologic age analyses https://mrdata.usgs.gov/wfs/geochron?request=GetCapabilities&service=WFS&version=1.0.0&