A mineral rich hydrothermal soup has left this colorful signature on this layered sedimentary host rock, somewhere between Mile 220-260, in the vicinity of Travertine Falls, Grand Canyon. As the Colorado River descends from an elevation of about 3100 feet at Lee's Ferry, some 280 miles to Lake Mead (1200 feet); it is also a journey back in time, cutting through some 1.7 billion years of geologic and paleontologic history. Every few miles reveals another formation, each a fossil record of a part
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TOP09803875
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達志影像
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RM
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