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The Grand Canyon's Oldest Rocks

“This rock is more than 4000 feet below the rim of the canyon."

“This rock is more than 4000 feet below the rim of the canyon, and it’s one of the oldest rocks of them all. “ By measuring the radioactive elements in this Granodiorite—the rock here at the bottom—geologists have figured out it formed 1.7 billion years ago.

AIR DATE 10/21/15

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#5108 - Decoding The Universe: Cosmos |
Sunday, May 25 at 8pm TPT LIFE
#5108 - Decoding The Universe: Cosmos |
Monday, May 26 at 2am TPT LIFE
#5108 - Decoding The Universe: Cosmos |
Tuesday, May 27 at 2pm TPT 2
#4910 - Ultimate Space Telescope |
Tuesday, May 27 at 3pm TPT 2
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Wednesday, May 28 at 8pm TPT 2

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The Grand Canyon's Oldest Rocks

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