Research Tools

 

Lexicons of Named Rock Units

USGS Geologic Names Lexicon  http://ngmdb.usgs.gov/Geolex/geolex_home.html

The British Geological Survey Lexicon of Named Rock Units http://www.bgs.ac.uk/lexicon/lexicon_intro.html

Lexicon of Canadian Geological Names  http://cgkn1.cgkn.net/weblex/weblex_e.pl

These links to web pages are provided for your benefit.  It does not constitute an endorsement from the AAPG or the AAPG Foundation Library.