Tertiary Coals in South
Texas. Anomalous Cannel-Like Coals of Webb County (Claiborne Group, Eocene) and Lignites of Atascosa County (Jackson Group, Eocene) - Geologic Setting, Character, Source-rock and Coal-bed Methane Potential. 1999 AAPG Annual Convention Energy Minerals Division Field Trip # 15. U.S. Geological Survey Open-File Report 99-301.
Dash with the Dinosaurs:PDF. A Mountain Bike Trek to the
Purgatoire River Dinosaur Trackway and the Cretaceous–Tertiary
boundary Impact Layer of Southeastern Colorado.
La Junta and Trinidad, Colorado.
Malheur
Field Trip. Geological features of the High Lava Plains and Northern Basin and Range. Spring Class - Geology 161, Portland Community College. Oregon.
Mount Hood, Oregon. History, construction of cone, glaciation, eruptive history, historical activity.