The Appalachian Mountains, with their ancient peaks and timeworn ridges, are a familiar sight in Eastern North America. But beneath them, deep within the Earth’s crust, a geological anomaly is slowly ...
IGNEOUS AND METAMORPHIC PETROLOGY AND PETROGENESIS: Isotope geochronology of the Northern Appalachians / J. B. Lyons and H. Faul -- Paleozoic regional metamorphism in New England and Adjacent Areas / ...
The ancient Appalachian Mountains may be hiding one of the United States' most valuable untapped natural resources. According ...
(via SciShow) The Appalachian Mountains are some of the oldest geological features on earth. And they also hold fossils that tell us about some of the very earliest life forms that we'll ever manage ...
Hike north on the Appalachian Trail and the scenery slowly transforms. Rugged, steep ridgelines in Tennessee and Virginia soften into the broad summits and smooth peaks of Pennsylvania and New Jersey.