Geoscience Images
http://www.uni-mainz.de/FB/Geo/Geologie/GeoInst.html
Earth Science World Image Bank http://www.earthscienceworld.org/images/
AAPG Slide Bank http://www.aapg.org/slide_bank/
These links to web pages are provided for your benefit. It does not constitute an endorsement from the AAPG or the AAPG Foundation Library.