PP016
Global Carbon Cycling in Deep Time: Feedback Mechanisms in Hothouse Worlds

Session ID#: 81253

Session Description:
Hothouse worlds preserved in deep time geological archives record major carbon cycle perturbations that are key to understanding the climatic and biotic responses to external forcings and associated feedbacks. Although imperfect analogues to current and near-future global climate change, the range of exceptional warming events are our most direct window into understanding future climate scenarios and improving global climate models. This session focuses on highlighting research on past warm intervals from the late Paleozoic and Mesozoic (e.g. OAEs, LIPs) and Cenozoic (e.g. PETM), with an emphasis on the timing, controls, and associated biogeochemical feedbacks.We aim to bring together researchers from a range of disciplines (i.e. proxies, modelling simulations) to shed light on the paleoclimatological and paleobiological response and feedbacks. We particularly welcome submissions that utilize novel geochemical proxies.
Index Terms:

1041 Stable isotope geochemistry [GEOCHEMISTRY]
4901 Abrupt/rapid climate change [PALEOCEANOGRAPHY]
4912 Biogeochemical cycles, processes, and modeling [PALEOCEANOGRAPHY]
4930 Greenhouse gases [PALEOCEANOGRAPHY]

Primary Convener:  Amy Louisa Elson, University of Southampton, Southampton, SO14, United Kingdom
Conveners:  Gordon Neil Inglis, University of Bristol, Organic Geochemistry Unit, School of Chemistry, Bristol, BS8, United Kingdom and Jessica Hope Whiteside, University of Southampton, Southampton, SO14, United Kingdom
Primary Liaison:  Amy Louisa Elson, University of Southampton, Southampton, SO14, United Kingdom
 
Stable and radiogenic Sr isotopes in the ocean across the Paleocene-Eocene Thermal Maximum event as recorded in marine barite (492640)
Susan M Pit, University of California Santa Cruz, Santa Cruz, CA, United States and Adina Paytan, UCSC-Inst Marine Sciences, Santa Cruz, CA, United States
 
The Role of Submarine Groundwater Discharge in Marine Isotope Budgets (497472)
Kimberley Kanani Mayfield1, Anton Eisenhauer2, Danielle Priscilla Santiago Ramos3, John A Higgins4, Tristan J Horner5, Maureen E E Auro5, Tomas Magna6, Nils Moosdorf7, Matthew A Charette8, Meagan Eagle Gonneea9, Nemanja Komar10, Bernhard Peucker-Ehrenbrink8, Adina Paytan11 and Carolyn Brady12, (1)University of California Santa Cruz, Santa Cruz, CA, United States, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (3)Princeton University, Princeton, NJ, United States, (4)Princeton University, Department of Geosciences, Princeton, NJ, United States, (5)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (6)Czech Geological Survey, Prague, Czech Republic, (7)Leibniz Center for Tropical Marine Ecology, Biogeochemistry / Geology, Bremen, Germany, (8)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (9)USGS, Baltimore, MD, United States, (10)University of Hawaii at Manoa, Honolulu, HI, United States, (11)UCSC-Inst Marine Sciences, Santa Cruz, CA, United States, (12)University of California Santa Cruz, Chemistry, Santa Cruz, United States
 
Paleoceanographic change across the Western Interior Seaway during the onset of Cretaceous Oceanic Anoxic Event 2 (502357)
Raquel Bryant1, R Mark Leckie1, Serena Dameron1, Khalifa M Elderbak2, Amanda L Parker1, Bradley B Sageman3, Matthew Jones4, Greg A Ludvigson5, Ellen E Martin6, Libby Robinson7, Masoud Asgharian Rostami8 and Jessica Hope Whiteside7, (1)University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States, (2)Ellington Geological Services, LLC, Houston, TX, United States, (3)Northwestern University, Evanston, IL, United States, (4)University of Michigan, Earth and Environmental Sciences, Ann Arbor, MI, United States, (5)University of Kansas, Lawrence, KS, United States, (6)University of Florida, Geological Sciences, Ft Walton Beach, FL, United States, (7)University of Southampton, Southampton, SO14, United Kingdom, (8)University of Urbino, Department of Earth, Life and Environmental Sciences, Urbino, Italy
 
Microbial mats record magmatically driven sea level fall as a prelude to the end-Triassic mass extinction (514042)
Kliti Grice1,2, Calum Fox3, Jessica Hope Whiteside4, Paul E Olsen5, Xingqian Cui6 and Roger E Summons6, (1)University of Bristol, Bristol, BS8, United Kingdom, (2)Curtin University, WA Organic and Isotope Geochemistry Centre, School of Earth and Planetary Sciences, Perth, WA, Australia, (3)Curtin University, Department of Chemistry, Perth, WA, Australia, (4)University of Southampton, Southampton, SO14, United Kingdom, (5)Columbia University of New York, Earth and Environmental Science, NY, NY, United States, (6)Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
 
Neogene Cooling Driven by Land Surface Reactivity rather than Increased Weathering Fluxes (Invited) (515097)
Jeremy K Caves Rugenstein, Senckenberg, Frankfurt, Germany; Max Planck Institute for Meteorology, Hamburg, Germany, Daniel Enrique Ibarra, Stanford University, Stanford, CA, United States; University of California, Berkeley, Earth and Planetary Sciences, Berkeley, CA, United States and Friedhelm von Blanckenburg, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany; Free University of Berlin, Berlin, Germany
 
Two pulses of carbon released during the onset of Paleocene-Eocene Thermal Maximum (540598)
Tali Lea Babila1, Christopher D. Standish2, Timothy J Bralower3, Monika Doubrawa4, Marci M Robinson5, Jean M. Self-Trail5, Robert P Speijer4, Peter Stassen4, Gavin L Foster2 and James C Zachos6, (1)University of Southampton, Ocean and Earth Science, Southampton, SO14, United Kingdom, (2)University of Southampton, Ocean and Earth Science, Southampton, United Kingdom, (3)Pennsylvania State University Main Campus, Geosciences, University Park, PA, United States, (4)KU Leuven, Leuven, Belgium, (5)USGS, Reston, VA, United States, (6)Univ California Santa Cruz, Santa Cruz, CA, United States
 
Non-marine paleoclimatic response of Early–Middle Eocene “hothouse” interval evidence from a lacustrine record of the Green River Formation in Utah, USA (565974)
Ryusei Kuma1, Hitoshi Hasegawa2, Koshi Yamamoto1, Masayuki Ikeda3, Hidekazu Yoshida1, Nagayoshi Katsuta4 and Jessica Hope Whiteside5, (1)Nagoya University, Nagoya, Japan, (2)Kochi University, Kochi, Japan, (3)Shizuoka University, Shizuoka, Japan, (4)Gifu University, Gifu, Japan, (5)University of Southampton, Southampton, SO14, United Kingdom
 
Silicon Isotopes Of The Mesozoic Radiolaria: Implications For Carbon-Silicon Cycle Coupling. (571200)
Maximilien Bole1, Masayuki Ikeda1, Rie S Hori2 and Peter Oliver Baumgartner3, (1)Shizuoka University, Shizuoka, Japan, (2)Ehime University, Matsuyama, Japan, (3)University of Lausanne, Institute of Earth Sciences, Lausanne, Switzerland
 
Drivers of Anoxia in an Epicontinental Seaway – An Organic Geochemical Transect across the Cretaceous Interior Seaway during Oceanic Anoxic Event 2 (579980)
Libby Robinson1, Kevin Sam George2, Jessica Hope Whiteside1, Samantha Gibbs3, Richard Twitchett4, Paul R Bown5, Joshua Lively6 and Selva Mariana Marroquín7,8, (1)University of Southampton, Southampton, SO14, United Kingdom, (2)University of Southampton, Southampton, United Kingdom, (3)National Oceangraphy Centre, Southampton, United Kingdom, (4)Natural History Museum, London, United Kingdom, (5)University College London, London, United Kingdom, (6)University of Illinois, Springfield, United States, (7)University of Texas at Austin, Jackson School of Geoscience, Austin, TX, United States, (8)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
 
Photic Zone Euxinia in North-east England Through the End-Triassic Mass Extinction (580982)
Sarah Jane Beith1, Jessica Hope Whiteside1, Darren R Gröcke2, Benjamin C Gill3 and John Marshall4, (1)University of Southampton, Southampton, SO14, United Kingdom, (2)Durham University, Durham, United Kingdom, (3)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (4)University of Southampton, Southampton, United Kingdom
 
Aptian-Albian clumped isotopes from the Xiagou and Zhonggou Formations, northwest China: Cool summer temperatures and regional shifts in hydrologic cycle (589304)
Dustin T Harper, University of Kansas, Department of Geology, Lawrence, KS, United States, Marina B Suarez, University of Kansas, Lawrence, KS, United States, Jessica Uglesich, University of Texas at San Antonio, Department of Geological Science, San Antonio, TX, United States, Alexis Godet, University of Texas at San Antonio, San Antonio, TX, United States, Da-Qing Li, Institute of Vertebrate Paleontology and College of Life Science and Technology, Gansu Agricultural University, Lanzhou City, China, Hailu You, University of Chinese Academy of Sciences, Beijing, China; CAS Center for Excellence in Life and Paleoenvironment, Beijing, China and Peter Dodson, The University of Pennsylvania, Department of Biomedical Sciences, Philadelphia, PA, United States
 
C-cycle perturbations of the Late Triassic to Early Jurassic. The Continental Record of Western Pangea southern Utah and northern Arizona, USA. (595515)
Jordan Oefinger, Dennis Mmasa, Asher Boudreaux, Celina A Suarez and Glenn Sharman, University of Arkansas, Fayetteville, AR, United States
 
Feedbacks between carbonate compensation and climate in greenhouse worlds (Invited) (599747)
Sarah Greene1, Markus Adloff2, Sandra Kirtland Turner3, Andy Ridgwell2,3, Pam Vervoort3 and Jamie D Wilson2, (1)University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham, United Kingdom, (2)University of Bristol, School of Geographical Sciences, Bristol, United Kingdom, (3)University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States
 
Mid-Paleocene climatic cooling, CO2 drawdown and terrestrial denudation in the Southwest Pacific (616453)
Sebastian Naeher1, Christopher John Hollis1, Enock Rotich2, Christopher Clowes1, Bernhard David Naafs3, Richard Pancost3, Kyle W Taylor3, Monica Raema Handler4, David S Selby5,6, G. Todd Ventura7, Jenny Dahl1, Xun Li1 and Richard Sykes1, (1)GNS Science, Lower Hutt, New Zealand, (2)Victoria University of Wellington, School of Geography, Environment and Earth Sciences, Wellington, New Zealand, (3)University of Bristol, Organic Geochemistry Unit, School of Chemistry, Bristol, United Kingdom, (4)Victoria University Wellington, School of Geography, Environment and Earth Sciences, Wellington, New Zealand, (5)University of Durham, Department of Earth Sciences, Durham, United Kingdom, (6)China University of Geosciences Wuhan, State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Resources, Wuhan, China, (7)St. Mary's University, Department of Geology, Halifax, NS, Canada
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