The Grand Canyon, one of the most iconic geological formations on Earth, may hold deeper secrets about our planet’s history ...

About 2,000 feet deeper than the Grand Canyon, Hells Canyon was rapidly carved when a lake spilled over about 2.1 million ...

A new study suggests ancient wood floated into a cave far above the Colorado River when a meteorite-induced earthquake ...

A massive landslide would have dammed the Colorado River, forming a deep lake that has since dried up. A meteorite impact ...

New research reveals that a meteorite strike near Winslow, Arizona, approximately 56,000 years ago, may have triggered a ...

Cutting‑edge dating reveals driftwood high in Grand Canyon caves 55,250 years ago when a meteor’s shock wave blocked and ...

Geology is full of detective stories about the Earth's history, and a new paper in Geology by University of New Mexico ...

It's been an icon of the majesty of nature, a popular subject of photography and a must-see vacation destination, yet the Grand Canyon's exact age has long been a mystery. IE 11 is not supported.

Karst is a type of rocky feature such as a cave or sinkhole that forms in dissolvable rocks. ... Northern Arizona University. (2020, January 23). Mystery of Grand Canyon's water supply. ScienceDaily.

W hen an asteroid made Meteor Crater in northern Arizona, it did more than leave the Earth’s best preserved impact crater.