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Program for Session 07a

Monday 22nd June AM: Room ICE

07a (Poster): Oxygen over Earth History: The Great Oxidation Event, Oxidation of the Proterozoic Ocean-Atmosphere, and the Terminal Proterozoic Transition

86	A Multilayered Ocean in the Ediacaran Yangtze Platform? Insights from Carbonate and Organic Matter Paired δ¹³C Ader M, Macouin M, Trindade R, Hadrien M-H, Yang Z, Sun Z & Besse J
87	Agent-Based Modelling of Archean Biogeochemistry and the Great Oxidation Clark J, Williams H, Lenton T & Watson A
88	Oxygen Oases and the Great Oxidation Daines S & Lenton T
89	Ab Initio Studies of Fe Isotope Fractionation in Fe Sulfides Hill P & Schauble E
90	Geochemistry of 1.9 Ga Gunflint Formation in Canada: Unique Oceanic Environments and Microbial Activities Ishida A, Oba M & Kakegawa T
91	Rise of Oxygen in Ediacaran Shallow Sea Ling H-F, Chen X, Li D & Jiang S-Y
92	Are There Four Cycles of Extreme Climate Change in the Neoproterozoic Dalradian Supergroup of Scotland and Ireland? Lowry D & Grassineau N
93	Zn Isotope Variations in Ediacaran Carbonates Moynier F, Fike D & Pichat S
94	Iron Isotopic Distribution at Grain Scale Sugggests the Redox Fluctuation of the Archaean Shallow Ocean Nishizawa M, Yamamoto H, Ueno Y, Komiya T, Maruyama S & Hirata T
95	Redox-Sensitive Trace Metals during the Neoproterozoic Oxygenation Event Och L, Shields G, Ling H, Li D, Cremonese L, Thirlwall M, Manning C & Osborne T
96	Multiple Sulfur Isotope Measurements from the 2.4 Ga Old Seidorechka Formation Reuschel M, Strauss H, Lepland A, Melezhik V, Cartigny P & Kaufman AJ
97	Highly Saline Palaeoproterozoic Seawater Inferred from Fluid Inclusions in 2.4 Ga Ongeluk Formation Saitou T, Shibuya T, Komiya T, Kitajima K, Yamamoto S, Nishizawa M, Ueno Y & Maruyama S
98	Anomalous Δ¹³C_carb-org in Marinoan Cap Dolostones Sans-Jofre P, Ader M, Trindade R & Nogueira A
99	Fe Isotope Compositions of 1.85 Ga Flin Flon Paleosol, Canada Sreenivas B, Murakami T, Bhaskar Rao YJ & Vijaya Gopal B
100	O₂ Evolution in the Paleoproterozoic: Experimental Simulation of the Relationships between Fe in Paleosols and PO₂ Sugimori H & Murakami T
101	Spatial and Temporal Variability of δ¹³C_carb and δ¹⁸O_carb of the Voëlwater Subgroup, South Africa Tripke C, Strauss H, Mezger K, Gutzmer J & Beukes N
102	Carbon Isotope Analyses of Kerogen from Tumbiana Formation, Fortescue Group Shown Possibility of the Environmental Redox Changes Yoshiya K, Sakurai R, Nishizawa M, Ueno Y, Tsuyoshi K, Yoshida N, Wada H & Maruyama S

Friday 26th June AM: Room C2/A1

07a (Oral): Oxygen over Earth History: The Great Oxidation Event, Oxidation of the Proterozoic Ocean-Atmosphere, and the Terminal Proterozoic Transition
Session chaired by Galen Halverson, David Fike & Ariel Anbar

09:30	Precambrian Seawater Fe and Si Stable Isotope Signature in BIFs Revealed by UV Femtosecond Laser Ablation Steinhoefel G, Horn I, von Blanckenburg F, Konhauser K, Beukes N & Gutzmer J
09:45	Partitioning of Si, P, V, Mo, and Ni during the Experimental Precipitation of Ferric Oxyhydroxides and their Use as Paleo-Proxies in Banded Iron Formation Lalonde SV, Pecoits E & Konhauser K
10:00	Oceanic Nickel Depletion and a Methanogen Famine Before the Great Oxidation Event Konhauser K, Pecoits E, Lalonde S, Papineau D, Nisbet E, Barley M, Arndt N, Zahnle K & Kamber B
10:15	Lessons to Learn from MIF-S in Precambrian Sedimentary Rocks Strauss H, Farquhar J & Thomazo C
10:30	Evaluating SO₂ Photolysis as the Source of Archean Sulfur MIF Lyons J
10:45	Keynote: Early Paleoproterozoic Fluctuations in Biospheric Oxygenation Poulton S, Bekker A & Canfield D
11:15	Invited: The Lomagundi-Jatuli Event, Louis Pasteur, and the Geological Record of Aerobic Respiration Kirschvink J, Nash C, Raub T, Raub T, Kopp R & Hilburn I
11:30	Response of the Ancient Anoxic Biosphere to the Oxidation of Terrestrial Environments Melezhik V, Fallick A & Simonson B
11:45	Osmium Evidence for Relationship between Atmospheric Oxygenation and Paleoproterozoic Glaciation Sekine Y, Suzuki K, Senda R, Tajika E, Tada R, Goto K, Yamamoto S, Ohkouchi N & Ogawa N
12:00	Mo Isotope Proxy for Ancient Anoxia: Insights from a Modern Anoxic Basin Archer C, Vance D, Goldberg T, Poulton S, Thamdrup B & Acuna G
12:15	Selenium Biogeochemistry as a Deep-Time Redox Proxy Foriel J, Stüeken E, Nelson B & Buick R

Friday 26th June PM: Room C2/A1

07a (Oral): Oxygen over Earth History: The Great Oxidation Event, Oxidation of the Proterozoic Ocean-Atmosphere, and the Terminal Proterozoic Transition
Session chaired by Galen Halverson, David Fike & Ariel Anbar

14:30	Keynote: The Succession of Primary Producers in Proterozoic Oceans Brocks J
15:00	Morphological Record of Oxygenic Photosynthesis in Conical Stromatolites Bosak T, Liang B, Sim MS & Petroff A
15:15	Anoxic and Oxic Phototrophic Primary Production during the Precambrian Honeycutt C, Bjerrum C & Canfield D
15:30	¹³C-Enriched Bacterial Lipids in the Modern Ocean: An Analogue to the Proterozoic Record Close H, Shah S, Brodie E & Pearson A
15:45	Iron Oxides, Dissolved Silica, and Regulation of Marine P Concentration Planavsky N, Rouxel O, Bekker A, Reinhard C & Lyons T
16:00	C-Isotopic Studies of Hydrocarbons in Neoproterozoic to Cambrian Samples Kelly A, Rothman D, Love G, Grosjean E, Fike D, Zumberge J & Summons R
16:15	Redox State of the Neoproterozoic Oceans: Insights from the REE and Cr Isotopes Bonnand P, Parkinson IJ, James RH, Fairchild IJ & Rogers NW
16:30	Multi-Isotopic Chemostratigraphies of Drill Core Samples in the Ediacaran Komiya T, Sawaki Y, Tahata M & Shimura T
16:45	A Geochemical Redox Model for Ediacaran Ocean Chemistry in Nanhua Basin, South China Li C, Love G, Lyons T, Sessions A, Fike D & Chu X
17:00	Testing Primary Origin and Duration of the Largest Negative δ¹³C Excursion in the Ediacaran Ocean: Insight from South China Zhu M, Lü M, Shen Y, Shields G & Zhang J
17:15	Geochemical Study of a Marine Shelf in SW-Gondwana: The Aftermath of Neoproterozoic Glaciations Velasquez M, Spangenberg J, Gaucher C & Boggiani P