PP020
Earth System Evolution and Response to Ocean Acidification I

Wednesday, 9 December 2020: 17:30-18:30
Virtual
Primary Convener:  Laura Haynes, Vassar College, Earth Science and Geography, Poughkeepsie, NY, United States
Conveners:  Colin Goldblatt1, Gabriella D Kitch2 and Benjamin W Johnson1, (1)University of Victoria, Victoria, BC, Canada(2)Northwestern University, Earth and Planetary Sciences, Evanston, IL, United States
Primary Liaison:  Benjamin W Johnson, Iowa State University, Atmospheric and Geological Sciences, Ames, IA, United States
Chairs:  Colin Goldblatt, University of Victoria, Victoria, BC, Canada and Benjamin W Johnson, University of Victoria, Victoria, BC, Canada
OSPA Liaison:  Benjamin W Johnson, University of Victoria, Victoria, BC, Canada
17:30
The early Earth productivity paradox (744692)
Michael Kipp, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, Joshua Krissansen-Totton, Department of Astronomy and Astrophysics, Santa Cruz, San Jose, CA, United States and David C Catling, University of Washington, Earth and Space Sciences, Seattle, WA, United States
17:34
Geochemistry of Redox-Sensitive Proxies for Early Earth Atmosphere-Hydrosphere Oxygenation in Archean Metasediments: Preliminary Results from the Cherry Creek Group, Montana, USA (774893)
Cynthia Hotujec-Kantner, University of Florida, Ft Walton Beach, FL, United States and Paul A Mueller, Univ Florida-Geology Dept, Gainesville, FL, United States
17:38
Os and Nd isotope constraints on Paleoproterozoic global events as recorded in sediments from Russian Fennoscandia (761304)
Ann Bauer, University of Wisconsin Madison, Madison, WI, United States, Alan D. Rooney, Yale University, Department of Earth and Planetary Sciences, New Haven, CT, United States and Aivo Lepland, Geological Survey of Norway, Trondheim, Norway
17:42
Depositional rates in the Ediacaran Nafun Group, Oman, and the wider late Proterozoic world (676733)
Marjorie Cantine1, Alan D. Rooney2, Andrew H Knoll3 and Kristin Bergmann1, (1)Massachusetts Institute of Technology, Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States, (2)Yale University, Department of Earth and Planetary Sciences, New Haven, CT, United States, (3)Harvard University, Department of Organismic and Evolutionary Biology, Cambridhe, MA, United States
17:46
Why the Day is 24 Hours Long (768750)
Norman Murray1, Hanbo Wu2, Christopher Lee2, Kristen Menou3 and Jérémy Leconte4, (1)University of Toronto, Canadian Institute for Theoretical Astrophysics, Toronto, ON, Canada, (2)University of Toronto, Physics, Toronto, ON, Canada, (3)University of Toronto, Astronomy and Astrophysics, Toronto, ON, Canada, (4)CNRS - Laboratoire d'Astrophysique de Bordeaux - Univ. Bordeaux, Pessac, France
17:50
High rate of collisions on the Archean Earth leads to variable atmospheric oxidation (736851)
Simone Marchi1, Nadja Drabon2, Toni Schulz3, Laura Schaefer4, David Nesvorny5, William F Bottke Jr5, Christian Koeberl3 and Timothy Lyons6, (1)Southwest Research Institute, Boulder, CO, United States, (2)Stanford Earth Sciences, Stanford, CA, United States, (3)University of Vienna, Vienna, Austria, (4)Stanford University, Stanford, CA, United States, (5)Southwest Research Institute Boulder, Boulder, CO, United States, (6)University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States
17:54
Is the Evolution of Climate a Four-beat Waltz? (728317)
Guigone Camus, LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France and Gilles Ramstein, Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, Paris, France
17:58
Computational biogeodynamics: coupled modeling of Earth’s interior, climate, environment and life evolution (684988)
Taras Gerya1, Robert J Stern2, Loïc Pellissier3 and Dominic Stemmler1, (1)ETH Zurich, Department of Earth Sciences, Zurich, Switzerland, (2)University of Texas at Dallas, Geosciences, Richardson, TX, United States, (3)Landscape Ecology, Institute of Terrestrial Ecosystems, ETH Zürich, Zürich, Switzerland
18:02
Discussion