UNM researcher finds a cause of mass extinctions
Megan Holmen | September 9A geological researcher at the University of New Mexico has discovered that low oxygen levels contributed to the Earth’s great mass extinctions. Maya Elrick, the sedimentary geologist behind the research, said ocean water anoxia — the depletion of dissolved oxygen in water — can be linked to four out of the five mass extinctions on Earth. The earth has had five mass extinctions, and the Late Ordovician Mass Extinction occurred about 450 million years ago. This extinction was when most life on earth was in the sea and resulted in a drastic reduction of species.




















