New Evidence Argues Against Prehistoric Extraterrestrial Impact Event

Apr 26, 2012 by System Admin

New Evidence Argues Against Prehistoric Extraterrestrial Impact Event

Evidence used to support a possible extraterrestrial impact event is likely the result of natural processes, according to a new collaborative study led by U.S. Geological Survey scientists.

Elevated levels of iridium, magnetic spherules, and titanomagnetite grains, collectively called “impact markers,” form the bulk of the evidence for the Younger Dryas impact hypothesis, a hotly contested idea that links climate change, extinctions, and the demise of the Clovis culture.

See it on Scoop.it, via Mindscape

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