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What on earth

Impact Craters – Chesapeake

The Chesapeake Bay (Virginia) is probably formed by a 35-million-year-old impact crater, the largest of its kind in the United States and the seventh-largest in the world.

The Washington Times brings news about the study of Chesapeake Bay Impact Crater at http://www.washtimes.com/metro/20051203-113901-6810r.htm

Ole

Mass Extinctions – end of PermianPorphyry Copper Deposits – Chuquicamata

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