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The Cambrian-age Tonto Group is a set of rocks famous for holding clues to the burst of new life that reshaped Earth 500 ...
Indian Defence Review on MSN2d
Geologists Just Cracked Open a 500-Million-Year Mystery in the Grand Canyon — What They Found Is Rewriting Earth’s HistoryA newly published study in GSA Today has upended decades-old theories about how some of the Grand Canyon’s oldest layers — ...
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