A collection of petrographic thin sections made from rock samples collected by
USGS field geologists in Alaska. Many of the sections have corresponding
descriptions cards; thin sections number 30,000. ...
[Adapted from the Geological Survey of Japan Sample Reference
Standards Abstracts Page,
The Geological Survey of Japan (GSJ) has issued 31 rock ...
Currently, the data set is comprised of approximately 450
granulometric analyses of 70 loose grain mineralogical preparations
from 30 geological sections of Seymour Island, Antarctica. The data