Baratal limestone, also known as the Baratal Formation, ... - dofaq.co
tomb of alexander the great

Baratal limestone, also known as the Baratal Formation, ...

wikipedia - 23 Apr 2022
Baratal limestone, also known as the Baratal Formation, is a limestone formation in the Altai Republic of Russia that formed during the Cambrian and Ediacaran, presumably on top of an ancient seamount that was later accreted to a continent. It may constitute the oldest known atoll in the world.

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