Most Recent Lecture

Back to the Present, and the Future

Friday, April 26th, 13:25 - 02:15 PM, GY 447

The pattern of glacial-interglacial cycles; Oxygen isotope proxies for climate; Regional differences in paleoenvironmental change; Late Quaternary extinction and the role of humans; Current changes in atmospheric carbon dioxide and global temperature; Comparison with past; Certainties and uncertainties from a geological and paleontological perspective.

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Indiana Fossils

Rafinesquina ponderosa

Rafinesquina ponderosa, showing left to right the interior pedicle valve, the exterior pedicle valve, and the interior brachial valve. This genus was named after Constantine Samuel Rafinesque (1783-1840), a naturalist who worked for many years at Transylvania University in Lexington, Kentucky.

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Technical terms

diagenesis

the physical and chemical changes occurring during the conversion of sediment to sedimentary rock and, in some cases, into metamorphic rock.

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Hoosier paleontologists

Charles Frederick Deiss

Charles Deiss was a paleontologist and geologist who was born in Kentucky and studied at Miami University of Ohio (BA, 1925). In 1946 he moved to Bloomington, Indiana to become chair of the Department of Geological Sciences and the Indiana State Geologist. Deiss was instrumental in establishing the IU Field Station near Whitehall Montana and he collected many fossils from the Paleozoic sections in that region. He is especially known for his work on Cambrian faunas and stratigraphy from western North America.

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