Geologists recently dated the age of Watersmeet gneiss, a type of rock in the Upper Peninsula, as the oldest in the U.S. Here's what to know.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A soaring mountain range as tall as the Himalayas once towered over the U.S. East Coast. Some 20 ...

A soaring mountain range as tall as the Himalayas once towered over the U.S. East Coast. Some 20 miles (32 kilometers) of rock have since transformed into sand and mud, exposing an outcrop of the most ...

Just as the life of a person or family is recorded in documents, images, and objects, the planet’s distant past is preserved in rocks. Due to the deformation processes that occur over geological eras, ...

At the exit for Clairmont Road off northeast-bound I-85 in DeKalb County, a huge, looming mass of exposed rock — or road cut — is clearly visible to motorists at the end of the exit ramp. I have ...

This is a preview. Log in through your library . Abstract Under favorable conditions sedimentary structures may be preserved in high-grade metamorphic rocks to yield valuable clues about the ...

MUCH interest attaches to the researches of the Swedish geologists among the older crystalline rocks of Scandinavia. In the year 1873 Mr. A. E. Törnebohm published an important paper in which he ...

Sri Lanka, formerly Ceylon, island country lying in the Indian Ocean and separated from peninsular India by the Palk Strait. It is located between latitudes 5°55′ and 9°51′ N and longitudes 79°41′ and ...