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Did a Pacific Ocean Meteor Trigger the Ice Ages?

Friday, September 21, 2012 16:45
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(Before It's News)

 

When a huge meteor collided with Earth about 2.5 million years ago in the southern Pacific Ocean it not only likely generated a massive tsunami but also may have plunged the world into the Ice Ages, a new study suggests.

An artists impression of a huge meteor colliding with Earth in the southern Pacific Ocean. Image Credit: NASA

A team of Australian researchers says that because the Eltanin meteor – which was up to two kilometres across – crashed into deep water, most scientists have not adequately considered either its potential for immediate catastrophic impacts on coastlines around the Pacific rim or its capacity to destabilise the entire planet’s climate system.

“This is the only known deep-ocean impact event on the planet and it’s largely been forgotten because there’s no obvious giant crater to investigate, as there would have been if it had hit a landmass,” says Professor James Goff, lead author of a forthcoming paper in the Journal of Quaternary Science. Goff is co-director of UNSW’s Australia-Pacific Tsunami Research Centre and Natural Hazards Research Laboratory.

“But consider that we’re talking about something the size of a small mountain crashing at very high speed into very deep ocean, between Chile and Antarctica. Unlike a land impact, where the energy of the collision is largely absorbed locally, this would have generated an incredible splash with waves literally hundreds of metres high near the impact site.

More on this news http://annesastronomynews.com/did-a-pacific-ocean-meteor-trigger-the-ice-ages/

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