In June, 2002, the U.S. Geological Survey (USGS) established 143 new gravity
stations and 12 new rock samples in the Dry Valley area, 30 miles north of
Reno, Nevada, on the California - Nevada border ...
[Adapted from the Geological Survey of Japan Sample Reference
Standards Abstracts Page,
The Geological Survey of Japan (GSJ) has issued 31 rock ...