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New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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A tortured inner canyon

I accept the blame that my Grand Canyon trip was in early October and we are currently observing early December.I think what impressed me the most about the Grand Canyon was the tortured rocks in the inner canyon. I am used to being around 1.7 billion year old gneiss and schist while floating the upper stretches of the Colorado River. The Vishnu schist and Zoroaster granite exceeded my prior | Impressum