Alternative strata of fossil forest and volcanic overflow revealed in the cliff near the southeastern end of Specimen Ridge, Yellowstone Nat. Park, Wyo. Geologists have found the remains of twelve forests which grew one above on this ridge and were successively buried by eruptions of the volcano once existing on the other side of the ridge. The crater of this volcano is estimated to have been about 15 miles in diameter and it was only one of a number of craters once active in the Park area which threw out enormous quantities of volcanic matter, profoundly altering the surface of the whole region and covering it in some places, such as the Specimen Ridge locality, with thousands of feet of lava and ash. Specimen Ridge lies on the northern side of the crater mentioned while the Grand Canyon the Yellowstone is worn down through a part of its western escarpment. Numerous hot springs seldom seen by the throngs of visitors who annually visit the Park, are still scattered over the surface of the old crater, just east of the Grand Canyon, testifying to the fact that subterranean fires still smolder there. View looking N. Elev. about 7,500 ft. Lat. 45N.; Long. 110W.)
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Description
Alternative strata of fossil forest and volcanic overflow revealed in the cliff near the southeastern end of Specimen Ridge, Yellowstone Nat. Park, Wyo. Geologists have found the remains of twelve forests which grew one above on this ridge and were successively buried by eruptions of the volcano once existing on the other side of the ridge. The crater of this volcano is estimated to have been about 15 miles in diameter and it was only one of a number of craters once active in the Park area which threw out enormous quantities of volcanic matter, profoundly altering the surface of the whole region and covering it in some places, such as the Specimen Ridge locality, with thousands of feet of lava and ash. Specimen Ridge lies on the northern side of the crater mentioned while the Grand Canyon the Yellowstone is worn down through a part of its western escarpment. Numerous hot springs seldom seen by the throngs of visitors who annually visit the Park, are still scattered over the surface of the old crater, just east of the Grand Canyon, testifying to the fact that subterranean fires still smolder there. View looking N. Elev. about 7,500 ft. Lat. 45N.; Long. 110W.)
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