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Speaker

David Rowley

University of Chicago
Geophysical Sciences
773-702-8146
drowley@uchicago.edu
Uplifting Tibet:When and Why it got so high OR Rate of Plate Creation:How much has it really varied
The first talk focuses on the history of orogenesis (sensu stricto) in the Himalayas and Tibet integrating results of stable isotope-based paleoaltimetry, plate kinematics, and geology to ascertain when and by what mechanisms the Himalayas and Tibetan Plateau have been formed. Recent publications on this include Rowley and Garzione (2007) Annual Reviews of Earth and Planetary Sciences, Rowley and Currie (2006) in Nature, among others. The second talk uses various datasets from the ocean basins to address what the observed history or plate creation has been and links this to our understanding of long term sea level variations. The basic conclusion, exapnding on Rowley (2002- Geol. Soc. Amer. Bull) is that the observable record implies quite limited variations in global mean spreading rate over the past 80 some million years, with no secular trend as has been widely inferred in the past.
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