"I am curious about what effect an asteroid impact, like the one that killed the dinosaurs, would have on the orbit of the earth."
Content with the tag: “subsurface biosphere”
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Impacts Could be Boon for Subterranean Life
On site at the Chesapeake Bay Impact Structure, geologists examine and catalog core sections. Credit: Aaron L. Gronstal
A drilling project into the Chesapeake Bay impact structure has found evidence that the subsurface may become more habitable after a large impact. Although major impacts could have been responsible for some of Earth’s largest mass extinctions, microbes living deep underground may actually benefit from such events.
“Impacts can fracture the rocks in the deep surface, which will allow fluids and nutrients to flow in,” says Charles Cockell from the University of Edinburgh in Scotland, and lead author of the study recently published in the journal Astrobiology.Source: [astrobio.net]
April 26, 2012 / Written by: Michael Schirber
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