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Washington Petrified Forests-Ginkgo Exotic Forest, George F. Beck
Washington Petrified Forests-Ginkgo Exotic Forest, George F. Beck
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Seven years ago we began our study of the Ginkgo Petrified Forest in Central Washington. This is in reality a series of forests occurring at various horizons in the Yakima ( and Wenas?) basalts throughout a vertical range of some 2,000 feet, and in a belt 150 miles long, and 50 miles wide, centering at Vantage on the Columbia River.