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Saturday, June 12, 2004

Cordilleran Geosyncline

A linear trough in the Earth's crust in which rocks of Late Precambrian to Mesozoic age (roughly 600 million to 66 million years ago) were deposited along the western coast of North America, from southern Alaska through western Canada and the United States, probably to western Mexico. The eastern boundary of the geosyncline extends from southeastern Alaska along the eastern