Session No. T4 Wednesday, June 27, 2001

10:00 AM-4:30 PM, Edinburgh International Conference Centre: Pentland
T4. Critical Transitions in Earth History and Their Causes
Ian Dalziel and C. McA. Powell, Presiding
Start Time
10:00 AM Introductory Remarks
10:10 AM WHAT CAUSED THE GREATEST OF ALL MASS EXTINCTIONS, AT THE END OF THE PERMIAN?: HALLAM, Antony, School of Earth Sciences, Univ of Birmingham, Edgbaston, Birmingham B15 2TT England, A.Hallam@bham.ac.uk.
10:40 AM FORMATION OF TERRESTRIAL PLANETS IN THE UNIVERSE: THE FIRST CRITICAL TRANSITION: LINEWEAVER, Charles H., Physics, Univ of New South Wales, Sydney 2052 Australia, charley@bat.phys.unsw.edu.au.
11:00 AM POSSIBLE ULTIMATE CAUSE OF THE K-T IMPACT: VARADI, Ferenc, GHIL, Michael, and RUNNEGAR, Bruce, Institute of Geophysics and Planetary Physics, Univ of California, Los Angeles, CA 90095-1567, varadi@atmos.ucla.edu
11:20 AM Break
11:30 AM A VENUS ANALOGUE OF CATASTROPHIC MANTLE OVERTURNS ON PRECAMBRIAN EARTH: GHAIL, Richard, T.H. Huxley School, Imperial College, London SW7 2BP United Kingdom, R.Ghail@ic.ac.uk.
11:50 AM PRE-RODINIAN OPHIOLITES; THEIR TECTONIC AND ENVIRONMENTAL IMPLICATIONS: MOORES, Eldridge M., Department of Geology, Univ of California, Davis, CA 95616, moores@geology.ucdavis.edu.
12:10 PM COPS (CLIMATIC OSCILLATION PERIODS) AT THE CROSSROADS OF EARTH EVOLUTION: YOUNG, Grant M., Univ Western Ontario, Biology & Geology Bldg Rm 128A, London, ON N6A 5B7 Canada, gyoung@julian.uwo.ca.
12:30 PM Lunch
2:00 PM THE ASCENT OF THE DINOSAURS: ECOLOGICAL RELEASE AFTER THE TRIASSIC-JURASSIC MASS EXTINCTION IN CONTINENTAL ENVIRONMENTS: OLSEN, Paul E. and RAINFORTH, Emma C., Lamont-Doherty Earth Observatory, Rt. 9W, Palisades, NY 10964-8000, polsen@ldeo.columbia.edu
2:30 PM RODINIA TO GONDWANALAND: GROWTH OF THE PACIFIC OCEAN AND DESTRUCTION OF THE MOZAMBIQUE AND BRAZILIDE OCEANS: POWELL, Christopher McA and PISAREVSKY, Sergei A., Tectonics Special Research Centre, The University of Western Australia, 35 Stirling Hwy, Crawley, Western Australia, 6009, Australia, cpowell@tsrc.uwa.edu.au
2:50 PM EXPLAINING THE CAMBRIAN EXPLOSION: CAUSE, CONSEQUENCE OR COINCIDENCE?: BUTTERFIELD, Nicholas J., Univ Cambridge, Downing St, Cambridge CB2 3EQ United Kingdom, njb1005@esc.cam.ac.uk.
3:10 PM Break
3:20 PM AN OCEANOGRAPHIC MECHANISM FOR CARBON CYCLE CHANGES AND GLACIATION IN THE LATE ORDOVICIAN: HOLGATE, Simon J.1, MARSHALL, James D.2, WILLIAMS, Richard G.1, and BRENCHLEY, Patrick J.2, (1) Oceanography Laboratories, Univ of Liverpool, PO Box 147, Liverpool, L69 3BX, United Kingdom, sholgate@liv.ac.uk, (2) Univ Liverpool, PO Box 147, Liverpool, L69 3BX, United Kingdom
3:40 PM THE CLIMATIC CONSEQUENCES OF A RARE ORBITAL ANOMALY AT THE OLIGOCENE/MIOCENE BOUNDARY (23 MYA): ZACHOS, James C.1, SHACKLETON, Nicholas J.2, REVENAUGH, Justin S.1, PÄLIKE, Heiko2, and FLOWER, Benjamin P.3, (1) Earth Sciences, Univ of California, Santa Cruz, Earth and Marine Sciences Building, Santa Cruz, CA 95064, jzachos@es.ucsc.edu, (2) Godwin Laboratory for Quaternary Studies, Cambridge Univ, Cambridge, CB2 3SA, United Kingdom, (3) College of Marine Science, Univ of South Florida, St. Petersburg, FL 33701
4:00 PM THE TRIGGERING MECHANISM(S) OF MASSIVE METHANE HYDRATE DISSOCIATION AT THE P/E BOUNDARY: THOMAS, Debra1, ZACHOS, James C.2, BRALOWER, Tim1, and THOMAS, Ellen3, (1) Geology, Univ of North Carolina, Chapel Hill, NC 27599, dthomas1@email.unc.edu, (2) Earth Sciences, Univ of California, Santa Cruz, Earth and Marine Sciences Building, Santa Cruz, CA 95064, jzachos@es.ucsc.edu, (3) Earth & Environmental Sciences, Wesleyan Univ, 265 Church Street, Middletown, CT 06459-0139
4:20 PM Discussion

Back to the Earth System Processes - Global Meeting (June 24-28, 2001)