information pertaining to earth sciences Examples: geophysical features and processes, geology, minerals, sciences dealing with earthquakes, volcanic activity, landslides, soils, permafrost, hydrogeology, erosion.
Cal-Atlas
Environmental Protection Agency (EPA) National Geospatial Program
Geocommons Finder
Geodata.Gov
Geography Network
GIS Data Depot
National Aeronautics And Space Administration (NASA) - Global Change Master Directory (GCMD)
US Bureau Of Land Management (BLM) - California
US Geological Survey (USGS) National Atlas
Data Sources Sorted By Data Topics
ISO19115 Data Topic Categories