This geologic map provides a detailed look at the area around the Grand Canyon. Lines represent geologic faults and folds. At their core, maps facilitate understanding and exploration. With maps ...

In the afternoon, while his crew set up camp for the night, Powell would often climb into the canyon to investigate. Much has been learned about the geology of the Grand Canyon and about the ...

The center of Arizona is in a small town, which might surprise you. Here's what to know about the center of Arizona and how to find it.

Current projects include study of the surface uplift history of the Colorado Rockies, the incision history of the Grand Canyon, and deciphering when and why Australia’s Great Escarpment formed. I love ...