Introduction -- Pioneer geologists of the American West / Dr W. Lyle Dockery -- Physical geology -- Regional geography -- Cities, towns and highways / American Association of Petroleum Geologists and ...

Old Rocks 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 ...

Editor's note: Former News-Times reporter Joe Hurley of New Milford is walking across the country along Route 6 and writing about the places he sees and people he meets. His dispatches appear every ...

At head of title: Department of the Interior. U.S. Geographical and Geological Survey of the Rocky Mountain Region. J.W. Powell in charge. First edition published 1877. Contents I.

This is an artistic reconstruction of what Colorado would have looked like 67 million years ago. The latest issue of the University of Wyoming’s only peer-reviewed scientific journal, Rocky Mountain ...

Though towering mountains are plentiful across the U.S., few states are quite as synonymous with mountains as Colorado. Gifted with many of the highest peaks and extraordinary sights of the Rocky ...