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Published

Prehistoric rock in Japan reveals clues to major ocean anoxic event

Summary by Phys.org
By studying prehistoric rocks and fossils emerging from the side of Mount Ashibetsu in Japan, researchers have precisely refined the timing and duration of Ocean Anoxic Event 1a (OAE 1a), an extreme environmental disruption that choked oxygen from Earth's oceans to cause significant extinction, especially among plankton.
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