RIFLE,Colorado – Where the Colorado Rockies now stand was, 100 million years ago, a shallow sea that stretched from the Arctic to the Gulf of Mexico. Today, that ancient seaway has yielded to the awe ...

Geologists have solved the mystery of the disappearance from the geological record, millions of years ago, of one of North ...

May 15—We once drove through Walsenburg with a geologist named Brian Penn, passing gas stations and discount stores and fast food chains when suddenly Penn veered his Ford Ranger to the side of the ...

History of faulting in the eastern Uinta Mountains, Colorado and Utah / Wallace R. Hansen -- Seismic and borehole evidence for important pre-Laramide faulting along the axial arch in northwest ...

Sean is a certified engineering geologist and professional geologist specializing in characterizing geologic ground conditions, and hazards for critical facilities involving tunnels and underground ...