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Smith Lecture: Ice in Equatorial Pangaea?

Lynn Soreghan, University of Oklahoma

The Late Paleozoic (300 Ma) archives the longest glaciation of the Phanerozoic, and Earth’s only example of icehouse collapse on a vegetated planet. Although glaciation is well documented from the southern paleolatitudes, the low-latitude tropics have long been considered uniformly warm. We hypothesize that alpine glaciation occurred in relatively low-elevation regions of tropical Pangaea. This hypothesis has been widely criticized as “outrageous” and remains poorly accepted; if valid, however, it implies globally cool temperatures at least episodically during the late Paleozoic Ice Age, and raises major questions about how this could have occurred.
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When and Where

Map 1100 North University Building - Room 1528 -

September 2018

3:30pm - 4:30pm

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