Recent Changes
Jun-2009:
Added data for volcanogenic massive sulfide deposits
Apr-2009:
Updated NURE-HSSR sediment and water geochemistry data
Feb-2009:
Improved Google Earth format (KML) for most databases
Feb-2009:
Updated data for Mineral Resource Data System (MRDS)
Dec-2008:
New interactive map for the Alaska Resource Data File, Potassium-Argon dates, Alaska radiometric ages, NURE sediment and water geochemistry
Nov-2008:
New interactive map for the 1974 geologic map of the conterminous US by King and Beikman
Oct-2008:
New interactive maps for geophysical data grids: gravity anomaly, magnetic anomaly, and aeroradiometric surveys
Oct-2008:
New interface for the USGS State Geologic Map Compilation