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Geotechnical Egineering News tagged with [intrusive igneous rock]

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Geologists offer new clues to cause of world's greatest extinction
PHYS.ORG   31 July 2017   USA  
Seth Burgess, a geologist at the U.S. Geological Survey, studies a columnar joint in the Siberian Traps. Formed by the cooling of basaltic lava, these massive columns are peppered with orange lichen. Credit: Scott Simper
<p>A study by a researcher in the Syracuse University College of Arts and Sciences offers new clues to what may have triggered the world's most catastrophic extinction, nearly 252 million years ago.<br /><br />James Muirhead, a research associate in the Department ...