PP028
Paleoclimatic and Tectonic Evolution of the Southern High-Latitudes Since the Mid-Mesozoic
Session ID#: 78672
Session Description:
Geological records of the southern high-paleolatitudes are critical to advancing our understanding of polar/global climate sensitivity through time and regional tectonic evolution spanning the rifting of Gondwana. Recent International Ocean Discovery Program (IODP) expeditions to the Southern Hemisphere have recovered new stratigraphic successions and geophysical data that are poised to deliver new insights into the geological history of the southern high-latitudes since the Mesozoic.
This session welcomes multidisciplinary contributions, including proxy records and modeling work, that investigate Mesozoic and Cenozoic tectonic, climatic, and oceanographic processes based on data from the southern high-paleolatitudes. These could include studies that address outstanding questions on global, regional, and local events, such as the transition from greenhouse to icehouse climate, ocean anoxic events, mass extinctions, and modifications to ocean circulation, many of which are inherently linked to the breakup of Gondwana and the associated volcanism.
Index Terms:
4928 Global climate models [PALEOCEANOGRAPHY]
4999 General or miscellaneous [PALEOCEANOGRAPHY]
8110 Continental tectonics: general [TECTONOPHYSICS]
8177 Tectonics and climatic interactions [TECTONOPHYSICS]
Primary Convener: Tracy M Quan, Oklahoma State University Main Campus, Boone Pickens School of Geology, Stillwater, OK, United States
Conveners: Matthew Jones, University of Michigan, Earth and Environmental Sciences, Ann Arbor, MI, United States, Carmine Wainman, The University of Adelaide, Australian School of Petroleum, Adelaide, Australia and Lloyd T White, University of Wollongong, School of Earth and Environmental Sciences, Wollongong, NSW, Australia
Primary Liaison: Tracy M Quan, Oklahoma State University Main Campus, Boone Pickens School of Geology, Stillwater, OK, United States
Vegetation prior to and during onset of East Antarctic glaciation: High resolution palynological insights from Sabrina Coast, East Antarctica (495512)
Meghan Duffy1, Catherine Smith2, Sophie Warny1, Rosemary Askin1, Emily Jane Tibbett3, Sarah J Feakins3, Amelia Shevenell4, Sean P S Gulick5 and Amy Leventer6, (1)Louisiana State University, Geology & Geophysics, Baton Rouge, LA, United States, (2)International Ocean Discovery Program, College Station, FL, United States, (3)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (4)University of South Florida, Tampa, FL, United States, (5)The University of Texas at Austin, Department of Geological Sciences, Austin, TX, United States, (6)Colgate University, Geology, Hamilton, NY, United States
Plant wax biomarker record of hydroclimate prior to the Eocene-Oligocene Transition from Prydz Bay, East Antarctica (506420)
Emily Jane Tibbett1, Howie Scher2, Sophie Warny3 and Sarah J Feakins1, (1)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (2)University of South Carolina Columbia, Department of Earth and Ocean Sciences, Columbia, SC, United States, (3)LSU, Baton Rouge, LA, United States
Sedimentological evolution of a thick Upper Cretaceous mudstone succession from the southern high latitudes – insights from IODP Site 1512, Bight Basin, Australia (512955)
Carmine Wainman, The University of Adelaide, Australian School of Petroleum, Adelaide, Australia, Gabriel Tagliaro, University of Texas at Austin, Austin, TX, United States, Matthew Jones, University of Michigan, Earth and Environmental Sciences, Ann Arbor, MI, United States, Adam Charles, MGPalaeo Pty Ltd, Malaga, Australia, Lloyd T White, University of Wollongong, School of Earth and Environmental Sciences, Wollongong, NSW, Australia and Peter McCabe, University of Adelaide, Australian School of Petroleum, Adelaide, Australia
Transition from the Hothouse to Coldhouse Climate during the Late Cretaceous at Southern High Latitudes: Foraminiferal Population Dynamics and Paleotemperature Records from the Mentelle Basin (IODP Exp. 369, Offshore SW Australia) (540894)
Maria Rose Petrizzo, University of Milan, Department of Earth Sciences, Milano, Italy, Kenneth G MacLeod, University of Missouri, Department of Geological Sciences, Columbia, MO, United States and Brian T Huber, National Museum of Natural History, Department of Paleobiology, Washington, DC, United States
Tectonic Gateway Driven Cooling of Antarctica with High Resolution Ocean Models (Invited) (573158)
Isabel Sauermilch, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, Australia, Joanne M Whittaker, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, Andreas Klocker, University of Tasmania, Institute for Marine and Antarctic Studies, Tasmania, Australia, David Roy Munday, British Antarctic Survey, Cambridge, United Kingdom, Katharina Hochmuth, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany; University of Leicester, Leicester, United Kingdom, Joseph Henry LaCasce, University of Oslo, Department of Geosciences, Oslo, Norway and Peter Bijl, Utrecht University, Utrecht, Netherlands
Cretaceous climate controversy: How much deviation from a warm greenhouse state? (Invited) (623214)
Brian T Huber, National Museum of Natural History, Department of Paleobiology, Washington, DC, United States, Kenneth G MacLeod, University of Missouri, Department of Geological Sciences, Columbia, MO, United States and Maria Rose Petrizzo, University of Milan, Department of Earth Sciences, Milano, Italy
Tectonic and atmospheric CO2 controls on sea-surface temperature variations during the Late Cretaceous (624765)
Lauren O'Connor1,2, Jessica E Tierney3, Stuart Robinson1, Hugh C Jenkyns4, Lloyd T White5, Bernhard David Naafs6 and Richard Pancost7, (1)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (2)University of Arizona, Department of Geosciences, Tucson, AZ, United States, (3)University of Arizona, Geosciences, Tucson, AZ, United States, (4)University of Oxford, Oxford, United Kingdom, (5)Royal Holloway University of London, Egham, United Kingdom, (6)Cabot Institute, University of Bristol, Organic Geochemistry Unit, School of Chemistry, Bristol, United Kingdom, (7)Univ Bristol, Cabot Institute, Bristol, United Kingdom
