Vishnu Rocks at Grand Canyon

*My Picture of the day* Vishnu Rocks at Grand Canyon - the oldest and deepest layers of Rock at the bottom of the Grand Canyon were named as the Vishnu schist. Vishnu Basement Rocks contain Early Paleoproterozoic granite which is nearly 1.7 billion years old. ***** *Dr.Surendra* — at Tusayan National Forest
*My Picture of the day* Vishnu Rocks at Grand Canyon - the oldest and deepest layers of Rock at the bottom of the Grand Canyon were named as the Vishnu schist. Vishnu Basement Rocks contain Early Paleoproterozoic granite which is nearly 1.7 billion years old. ***** *Dr.Surendra* — at Tusayan National Forest
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