Rapid Formation

Millions of nautiloid fossils prove rapid Grand Canyon limestone formation

Remember the Nautiloids: In the Grand Canyon there is a limestone layer that challenges the textbook explanation of super-slow limestone formation (e.g., the NPS indicates that it took up to 35 million years for Big Bend limestone to form, and a geologist on a popular site says it took about a million years for each 18 feet at the

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