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Ocean Anoxic Event 1a
December 29 , 2024
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- The Ocean Anoxic Event 1a (OAE 1a) was one of the largest disruptions of the global carbon cycle and climate system in the past 200 million years.
- New research has determined that it was triggered 119.5 million years ago and lasted for 1.1 million years, during the Early Cretaceous Period.
- This event caused a critical lack of oxygen in the oceans and led to extensive extinctions, particularly among plankton.
- The cause of OAE 1a was undersea volcanic eruptions, which resulted in a rapid injection of massive amounts of carbon dioxide (CO2) into the ocean and the atmosphere.
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