Geological Society

Geological Society

A robust geoscience program will draw thousands of curious minds to the Colorado Convention Center in Denver for the 122nd Annual Meeting & Exposition of the Geological Society of America, Oct. 31 to Nov. 3. More than 3,700 technical presentations will illuminate geological and integrative science research of international, national and regional interest. Among the papers presented by University of Cincinnati faculty and students at the Geological Society of America annual meeting are: China Anomalies Add To Permian Extinction Understanding

Our understanding of global climate changes during the extinction at the end of the Permian period is based on geologic data collected around the world. UC geologist Thomas J. Algeo and colleagues describe an analysis of the carbon content of marine sediments at 33 widespread locations. The samples, in general, show similar patterns, except for rocks now preserved in southern China. While most rocks deposited during the Permian extinction show increased concentrations of total organic carbon and higher organic carbon accumulation rates, the Chinese samples show the opposite effect. It is probable that this indicates an explosive regional volcanic eruption. Sediments in the area are sterilized. The data may show that the combined effects of local volcanism and global climate change were especially lethal.

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