B21A:
(Bio-Isotopic) Message in a (Rock Record) Bottle: Who Wrote It, How Did It Get Here, and What Does It Tell Us? I Posters


Session ID#: 10304

Session Description:
Signals of microbial life in the rock record have expanded beyond physical fossil evidence to include molecular, elemental, and isotopic signatures. The methods used to derive these data have contributed to a better understanding as to the origination of key microbial metabolisms throughout Earth history (e.g. oxygenic photosynthesis, sulfate reduction). Indeed, there has been an explosion in the application of stable isotope proxies (e.g. C, S, Ca, Mg, Cr, Fe, etc.) used to investigate the rock record.  In this exciting geochemical ‘gold-rush’ it is critical that solid connections to modern microbial, physical and (geo)chemically ground-truthed constraints be established and maintained, particularly with regard to the production and preservation of bio-isotopic signatures.  In this session we invite contributors studying any period of Earth history, including modern natural and experimental analogues, using new or established methods for detecting microbial biosignals.
Primary Convener:  William Leavitt, Washington University in St Louis, Earth & Planetary Sciences, St. Louis, United States; Dartmouth College, Earth Sciences, Hanover, United States
Conveners:  Alexandra v Turchyn, University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom, Jeff R Havig, University of Minnesota, Earth Sciences, Minneapolis, MN, United States and Andrew D Czaja, University of Cincinnati Main Campus, Department of Geosciences, Cincinnati, United States
Chairs:  William Leavitt, Washington University in St Louis, Earth & Planetary Sciences, St. Louis, United States and Jeff R Havig, University of Minnesota, Earth Sciences, Minneapolis, MN, United States
OSPA Liaison:  Jeff R Havig, University of Minnesota, Earth Sciences, Minneapolis, MN, United States

Cross-Listed:
  • OS - Ocean Sciences
  • PP - Paleoceanography and Paleoclimatology
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0424 Biosignatures and proxies [BIOGEOSCIENCES]
0448 Geomicrobiology [BIOGEOSCIENCES]
0454 Isotopic composition and chemistry [BIOGEOSCIENCES]

Abstracts Submitted to this Session:

Automated Imaging Techniques for Biosignature Detection in Geologic Samples (83609)
Kenneth H Williford, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
SIMS and NanoSIMS analyses of Mesoproterozoic individual microfossils indicating continuous oxygen-producing photosynthesis in Proterozoic Ocean (86787)
Xiaotong Peng, Sanya Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China, Zixiao Guo, Sanya Institute of Deep-sea Science and Engineering, Sanya, China, Christopher H House, Pennsylvania State University, Geosciences and Environmental Systems Institute, University Park, United States, Shun Chen, Sanya Institute of Deep-sea Science and Engineering, Deep-sea Science Division, Sanya, China and Kaiwen Ta, Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
Molecular and Isotopic Signs of Life and Climate in the Hyperarid Atacama Desert (74843)
Kari M Finstad1, Michael L Tuite Jr2, Kenneth H Williford2 and Ronald Amundson1, (1)University of California Berkeley, Environmental Science, Policy and Management, Berkeley, CA, United States, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Sulfate-driven anaerobic oxidation of methane as the origin of extremely 13C-depleted calcite in the Doushantuo cap carbonates in South China (64536)
Yongbo Peng1, Huiming Bao1, Ganqing Jiang2, Alan Jay Kaufman3, Shuhai Xiao4, Chuanming Zhou5 and Jiasheng Wang6, (1)Louisiana State University, Department of Geology & Geophysics, Baton Rouge, LA, United States, (2)University of Nevada Las Vegas, Department of Geoscience, Las Vegas, NV, United States, (3)University of Maryland, College Park, United States, (4)Virginia Tech, Department of Geoscience, Blacksburg, VA, United States, (5)Chinese Academy of Sciences, Center for Excellence in Life and Paleoenvironment, Nanjing, China, (6)State Key Laboratory of Biogeology and Environmental Geology, Wuhan, China
Isotopic Equilibration Between Sulfide and Organic Matter: Implications for Records of Sedimentary δ34S. (70027)
Morgan R Raven1, Alex L Sessions2, Jess F Adkins1 and Woodward W Fischer3, (1)California Institute of Technology, Pasadena, CA, United States, (2)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, United States, (3)Caltech, Division of Geological and Planetary Sciences, Pasadena, United States
Theoretical estimation of equilibrium sulfur isotope fractionations among aqueous sulfite species: Implications for isotope models of microbial sulfate reduction (70743)
Daniel Lee Eldridge1, James Farquhar1 and Weifu Guo2, (1)University of Maryland College Park, College Park, MD, United States, (2)Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States
Diurnal sulfur isotope patterns in a stratified euxinic lake (79079)
William Gilhooly III1, Josef Peter Werne2, Molly O'Beirne3, James Howard Harris IV1, Fotios Fouskas1, Jeff R Havig4, Trinity L Hamilton5 and Michael McCormick6, (1)Indiana University Purdue University Indianapolis, Indianapolis, IN, United States, (2)University of Pittsburgh, Geology and Environmental Science, Pittsburgh, PA, United States, (3)Univ Pittsburgh, Geology and Environmental Science, Pittsburgh, United States, (4)University of Minnesota, Earth Sciences, Minneapolis, MN, United States, (5)University of Minnesota Twin Cities, Plant and Microbial Biology, Minneapolis, United States, (6)Hamilton College, Clinton, United States
Electron-bifurcating transhydrogenase is central to hydrogen isotope fractionation during lipid biosynthesis in sulfate reducing bacteria (85868)
William Leavitt1, Theodore M Flynn2, Melanie Suess3 and Alexander S Bradley3, (1)Washington University in St Louis, Earth & Planetary Sciences, St. Louis, United States, (2)Argonne National Laboratory, Argonne, IL, United States, (3)Washington University in St Louis, Dept. of Earth & Planetary Sciences, St. Louis, MO, United States
Evidence for a lack of biological P-cycling in a Cambrian soil (74116)
Ziran Wei1, Yongbo Peng2 and Huiming Bao2, (1)Louisiana State University, Baton Rouge, LA, United States, (2)Louisiana State University, Department of Geology & Geophysics, Baton Rouge, LA, United States
Microbial Mg-carbonate Precipitation and Early Diagenetic Dolomite Crust Formation at Hypersaline Lagoon, Rio de Janeiro State, Brazil. (74746)
Anelize Manuela Bahniuk Rumbelsperger1, Judith A. McKenzie2, Edoardo Perri3, Natalie Vögeli4 and Crisogono Vasconcelos2, (1)Universidade Federal do Paraná, Centro, Brazil, (2)ETH Swiss Federal Institute of Technology Zurich, Geological Institute, Zurich, Switzerland, (3)Università della Calabria, Rende, Italy, (4)University Joseph Fourier Grenoble, Grenboble, France
Developing a Metal Proxy for the Rise of Early Terrestrial Life (85812)
Samuel Phillip Rochelle, Arizona State University, Tempe, AZ, United States, Ariel D Anbar, Arizona State University, Department of Chemistry, Tempe, AZ, United States, Hilairy Ellen Hartnett, Arizona State University, Tempe, United States, Stephen J Romaniello, Arizona State University, School of Earth & Space Exploration, Tempe, AZ, United States and Amisha T Poret-Peterson, United States Department of Agriculture, Agricultural Research Service, Crops Pathology and Genetics Research Unit, Davis, United States
Oxygen Isotope Signatures of Biogenic Manganese(III/IV) Oxides (76258)
Kevin Michael Sutherland, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Science, Cambridge, MA, United States, Colleen Hansel, Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States and Scott D Wankel, Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States
Importance of Tetrahedral Iron during Microbial Reduction of Clay Mineral NAu-2 (65124)
Bingjie Shi1,2, Lingling Wu1,3, Kai Liu1,3, Christina Marie Smeaton1,3, Weiqiang Li4,5, Brian L Beard6,7, Clark Johnson6,7, Eric E Roden5,8 and Philippe Van Cappellen1,3, (1)University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, ON, Canada, (2)University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada, (3)University of Waterloo, Water Institute, Waterloo, ON, Canada, (4)Nanjing University, School of Earth Sciences and Engineering, Nanjing, China, (5)University of Wisconsin Madison, Department of Geoscience, Madison, WI, United States, (6)NASA Astrobiology Institute, Madison, United States, (7)University of Wisconsin-Madison, Department of Geoscience, Madison, WI, United States, (8)NASA Astrobiology Institute, USA, United States
Iron Isotope Fractionation Reveals Structural Change upon Microbial and Chemical Reduction of Nontronite NAu-1 (68724)
Kai Liu1, Lingling Wu2, Bingjie Shi1, Christina Marie Smeaton3, Weiqiang Li4, Brian L Beard5, Clark Johnson5, Eric E Roden6 and Philippe Van Cappellen3, (1)University of Waterloo, Waterloo, ON, Canada, (2)University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, ON, Canada, (3)University of Waterloo, Ecohydrology Research Group, Waterloo, ON, Canada, (4)Nanjing University, School of Earth Sciences and Engineering, Nanjing, China, (5)University of Wisconsin-Madison, Department of Geoscience, Madison, WI, United States, (6)University of Wisconsin Madison, Department of Geoscience, Madison, WI, United States

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