The North American craton actually dips near the Rockies rather than forming a sharp vertical step as previously believed.

LAKEWOOD, Colo. ” The U.S. Forest Service has made all its maps for the Rocky Mountain region available for sale online. Shoppers can find everything from a Colorado Wilderness Guide to a map on the ...

7 billion years ago during the Precambrian Era. 0 billion years old, making them among the oldest rocks found in the United States. 6 billion years ago, massive volumes of magma pushed into these ...

Stretching for over 1,400 km, the Canadian Rocky Mountains are spectacular to see up close. Our Canadian Rocky Mountain ...

This program addresses the question, “What do contemporary maps reveal about state creation in Trans-Appalachia in the years immediately after the Revolution?” Images of rare, important, and deeply ...

The U.S. Forest Service has released an interactive online map for its Rocky Mountain Region, which includes Summit County, that details site-specific resources, regulations and closures amid the ...