The Grand Canyon may rewrite the textbooks on the Cambrian Explosion—a key turning point in Earth's history when there was a sudden boom in complex life and the emergence of all the major animal ...
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An Event So Extreme It Erased a Sea—New Evidence Reveals What Happened 6.2 Million Years Ago
Roughly 6.2 million years ago, the Red Sea—today one of the world’s most strategically vital marine passages—underwent a transformation so extreme that it vanished completely. The basin, once filled ...
The term Great Unconformity was first used in the year 1869 to describe the prominent stratigraphic surface in the Grand Canyon that separates the shallow marine, ∼525-Myr-old Cambrian Tapeats ...
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