Topic summary
Petrologic
Extracted from the Wikipedia article Petrology.
External links
- Atlas of Igneous and metamorphic rocks, minerals, and textures – Geology Department, University of North Carolina
- Metamorphic Petrology Database (MetPetDB) – Department of Earth and Environmental Sciences, Rensselaer Polytechnic Institute
- Petrological Database of the Ocean Floor (PetDB) - Center for International Earth Science Information Network, Columbia University