- Formations (Geology) -- Oregon -- Deschutes County1
- Geology -- California -- Death Valley Area1
- Geology -- Mexico, Gulf of1
- Geology -- Oregon1
- Geology -- Oregon -- Deschutes County1
- Geology -- Oregon -- Jefferson County1
- Geology -- Oregon -- Wheeler County1
- Geology -- Yucatán Peninsula1
- Geology, Stratigraphic -- Cretaceous1
- Geology, Stratigraphic -- Tertiary1
- Geology, Structural1
- Geomorphology -- Oregon -- Jefferson County1
- Plants -- Oregon -- Burns1
- Pumice1
- Soils -- Oregon -- Burns -- Classification1
- Squaw Butte Range and Livestock Experiment Station (Burns, Or.)1
- Volcanic ash, tuff, etc. -- Oregon1
- Volcanic ash, tuff, etc. -- Oregon -- Bend1
- Volcanic ash, tuff, etc. -- Oregon -- Deschutes River Area1
- Volcanic ash, tuff, etc. -- Oregon -- Tumalo1