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To finish reading, click on "Microbes at Siljan Crater Are No Surprise".Scientists have reported the presence of methane-producing microbes living deep beneath the Siljan impact crater in Sweden. Although the researchers stopped short of claiming the impact somehow brought the microbes to Earth, they do assert that impacts can create favorable habitats for colonization.The 30-mile wide Siljan impact site is ringed by Ordovician and Silurian sediments, including black shales that appear to be source rocks for oil. In fact, oil seeps have been known around the crater for hundreds of years, dating back to reports by the great Swedish botanist Carl Linnaeus in 1734.
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