Results for @tags uncomformity
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Grand Canyon GigaView #20 - Blacktail Canyon

Published almost 4 years ago by Thomas Hayden

The Great Unconformity - Welcome to the surface of the Earth, approx. 550 million years ago. The first layer of rock, at ground <a href="http://www.360cities.net/image/grandcanyongigaview20blacktail-canyon">...(more)</a>