Volcanic eruptions directly triggered ocean acidification during Early Cretaceous
E-Mail IMAGE: Calcium carbonate samples from a sediment core drilled from the mid-Pacific Mountains show evidence of ocean acidification 127 to 100 million years ago. view more Credit: Northwestern University EVANSTON, Ill. -- Around 120 million years ago, the earth experienced an extreme environmental disruption that choked oxygen from its oceans. Known as oceanic anoxic event (OAE) 1a, the oxygen-deprived water led to a minor -- but significant -- mass extinction that affected the entire globe. During this age in the Early Cretaceous Period, an entire family of sea-dwelling nann...
Source: eurekalert.org