Tag: PETM

Can volcanoes overheat the Earth?

A geyser in Iceland is part of the Central Atlantic rift system where volcanic activity may have caused an extreme global warmup about 56 million years ago. @bberwyn photo.

Study says ancient extreme global warming event was caused by C02 buildup from massive eruptions

Staff Report

The role of volcanoes on Earth’s climate is complex. It’s well known that aerosol particles from eruptions like Mt. St. Helens can cool temperatures by blocking a small part of the sun’s energy, but a new study suggests that an extreme global warming event about 56 million years ago was caused by massive volcanic C02 emissions.

The research, led by the University of Southampton found evidence that atmospheric C02 doubled within a relatively short period of time, on the geological scale, resulting in a global temperature spike that drove mass extinctions. The eruptions happened during formation of the Atlantic Ocean, according to the study published in the journal Nature. Continue reading “Can volcanoes overheat the Earth?”

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