PP018
Ocean deoxygenation during past hyperthermals
Session ID#: 157383
Session Description:
Changes in marine oxygen levels are one of the lesser-known aspects of anthropogenic climate warming. Paleoceanographic records provide potential analogues for how global and regional water column deoxygenation relates to varying pCO2 levels, particularly during striking hyperthermal events such as the mid-Miocene Climatic Optimal, Paleocene-Eocene Thermal Maximum, Permian/Triassic Boundary, etc. This session aims to learn from past hyperthermal events to shed light on processes relevant to future oxygen loss in a warming world. We welcome contributions that explore the impact of climate change on marine redox conditions using a variety of approaches. This includes but is not limited to studies that use proxy records and modeling experiments of changes in biogeochemical cycling, ocean circulation, and Earth surface processes (e.g., weathering, volcanism).
Index Terms:
4802 Anoxic environments [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4901 Abrupt/rapid climate change [PALEOCEANOGRAPHY]
4912 Biogeochemical cycles, processes, and modeling [PALEOCEANOGRAPHY]
4924 Geochemical tracers [PALEOCEANOGRAPHY]
Primary Convener: Weiqi Yao, Southern University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China
Conveners: Mingsong Li, Peking University, School of Earth and Space Sciences, Beijing, China, Jun Shen, China University of Geosciences Wuhan, State Key Laboratory of Geological Processes and Mineral Resources, Wuhan, China and Ulrich G Wortmann, University of Toronto, Department of Earth Sciences, Toronto, ON, Canada
Volcanic Trigger of Northeast Pacific Deoxygenation during Cordilleran Ice Sheet Retreat (Invited) (1045502)
Jianghui Du1, Alan C Mix2, Brian A Haley2, Christina L Belanger3 and Sharon Sharon4, (1)ETH Zurich, Institute of Geochemistry and Petrology, Zurich, Switzerland, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (3)Texas A&M University, Geology & Geophysics, College Station, United States, (4)Texas A&M University, Geology and Geophysics, College Station, United States
Multiple Episodes of Rapid Global Ocean Deoxygenation Linked to Early Cretaceous Climate Dynamics (1060029)
Kohen Witt Bauer, University of Victoria, Victoria, BC, Canada, Chris Cheung, University of Hong Kong, Earth Sciences, Hong Kong, Hong Kong, Cinzia Bottini, University of Milan, Dept. Earth Sciences, Milan, Italy, Adam Nordsvan, Curtin University, School of Earth and Planetary Sciences, Perth, WA, Australia, Elisabetta Erba, Univ of Milan, Dept. Earth Sciences, Milan, Italy, Ryan McKenzie, University of Hong Kong, Department of Earth Sciences, Hong Kong, Hong Kong and Sean Crowe, University of British Columbia, Department of Microbiology and Immunology, Vancouver, BC, Canada
Ecological Assessment of Early Jurassic (Pliensbachian and Toarcian) Benthic Foraminifera from the Central High Atlas, Morocco (1120859)
Michel Septfontanie, University of Lausanne, Conservateur au Musée de Géologie, Lausanne, Switzerland, Travis Stone, University of Texas at Austin, JAckson School of Geoscience, Austin, United States, Tanner Fonville, Texas A&M University College Station, College Station, TX, United States, Rowan C Martindale, University of Texas at Austin, Jackson School of Geoscience, Austin, United States, Stéphane Bodin, Aarhus University, Department of Geoscience, Aarhus C, Denmark and Lahcen Kabiri, Université Moulay Ismail, Department of Earth Sciences, Meknès, Morocco
Geochemical and Biomarker Analysis of the Lower Aptian Succession of the Basque-Cantabrian Basin, Northern Spain, Implications for Organic Matter Sources During OAE 1a (1129765)
Carlos Herdocia, Florida International University, Miami, FL, United States and Florentin J Maurrasse, FL Intl Univ-Earth Sciences, Miami, FL, United States
Influence of the Aptian-Albian Boundary Carbon Cycle Perturbation on Benthic Foraminifera from the Atlantic Ocean (1150924)
Karlos Guilherme Diemer Kochhann, Unisinos University, itt OCEANEON - Technological Institute for Paleoceanography and Climate Change/Geology Graduate Program, São Leopoldo, Brazil, Brian T Huber, National Museum of Natural History, Smithsonian Institution, Paleobiology, Washington, DC, United States, Ann E Holbourn, University of Kiel, Kiel, Germany and Wolfgang Kuhnt, Christian-Albrechts-University, Institute of Geosciences, Kiel, Germany
Constraining the paleobiological response of benthic foraminifera to the Paleocene-Eocene Thermal Maximum in the Lodo Formation (1190776)
Aric Howard Mine1, Gabriel J Valov2, Mara E Brady2, Randall Chevalier1, Matthew Riley2 and Mathieu Richaud2, (1)California State University Fresno, Earth & Environmental Sciences Dept., Fresno, CA, United States, (2)California State University Fresno, Earth & Environmental Sciences Dept., Fresno, United States
Bottom Waters Deoxygenation during Oceanic Anoxic Event (OAE 1b) in the Tropical South Atlantic Ocean (1198508)
Gerson Fauth1, Karlos Guilherme Diemer Kochhann1, Guilherme Krahl Krahl SR2, Marlone Heliara Hünning Bom3, Simone Baecker Fauth2, Mauro Daniel Rodrigues Bruno1, Rodrigo do Monte Guerra4, Alessandra Santos2, Jorge Villegas Martín5, Oscar Strohschoen Jr.2, Jairo F Savian6, Carolina Gonçalves Gonçalves Leandro6, Raquel Gewehr de Mello6, Francisco Henrique Oliveira Lima7 and Daiane Ceolin2, (1)Unisinos University, itt OCEANEON - Technological Institute for Paleoceanography and Climate Change/Geology Graduate Program, São Leopoldo, Brazil, (2)Unisinos University, itt OCEANEON - Technological Institute for Paleoceanography and Climate Change, São Leopoldo, Brazil, (3)itt OCEANEON - Technological Institute for Paleoceanography and Climate Change/Geology Graduate Program, São Leopoldo, Brazil, (4)Unisinos University, itt OCEANEON - Technological Institute for Paleoceanography and Climate Change, Sao Leopoldo, Brazil, (5)Unisinos University, itt OCEANEON - Technological Institute for Paleoceanography and Climate Change, São Leopoldo, RS, Brazil, (6)Universidade Federal do Rio Grande do Sul, Instituto de Geociências, Porto Alegre, Brazil, (7)Research & Development Center (PETROBRAS), Rio de Janeiro, Brazil
