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Arizona rock core sheds light on triassic dark ages

from University of Texas at Austin

Arizona rock core sheds light on triassic dark ages University of Texas at Austin A rock core from Petrified Forest National Park, AZ, has given scientists a powerful new tool to understand how catastrophic events shaped Earth’s ecosystems before the rise of the dinosaurs. The quarter-mile-long core is from an important part of the Triassic Period when life on Earth endured a series of cataclysmic events: our planet was struck at least three times by mountain-sized asteroids, chains of volcanoes erupted to choke the sky with greenhouse gases, and tectonic movement tore apart Earth’s single supercontinent, Pangea. READ MORE

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