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All abstracts by Hiroshi Ohmoto in conference series: Goldschmidt

(2023) The Origin and Evolution of Life on the Methane-Rich Early Earth
Ohmoto H & Ferry JG

(2022) Possible Emergences of Cyanobacteria and Sulfate-Reducing Bacteria Before the Emergence of Anoxygenic Photoautotrophs
Ohmoto H

(2021) Discoveries of Microfossils of Fe-Oxidizing Bacteria in 3.46 Ga- and 3.35 Ga-Old Cherts from Pilbara, Western Australia
Graham UM, Sugitani K & Ohmoto H

(2021) Sedimentary Records of MIF-S and Redox-Sensitive Elements Indicate the Oxygenated Early Earth
Ohmoto H

(2020) The MIF-Sulfur Record Suggests the Oxygenated Atmosphere and Sulfate-Rich Oceans Through Geologic History
Ohmoto H

(2019) Seawater-Sulfate Origin for Volcanic SO2 on Earth
Ohmoto H

(2019) Phosphate Flux from Oceanic Crust to the Archean Oceans: Evidence from the 3.46 Ga Apex Basalt, Australia
Tsukamoto Y, Kakegawa T, Graham U, Liu Z-K, Ito A & Ohmoto H

(2018) Discovery of Ni-Fe Phosphides in the 3.46 Ga-Old Apex Basalt: Implications on the Phosphate Budget of the Archean Oceans
Tsukamoto Y, Kakegawa T, Graham U, Liu Z-K, Ito A & Ohmoto H

(2018) Multimodal Imaging of a Banded Iron Formation Sample
Schoonen M, Thieme J, Northrup P, Jaret S, McKeeby B, Glotch T, Young J, Yesiltas M & Ohmoto H

(2018) (Bio)geochemical Cycles of S, C, Fe, and O on the Hotter Archean Earth
Ohmoto H, Graham U, Watanabe Y, Brainard J, Chorney A, Hamasaki H, Tsukamoto Y & Liu Z-K

(2018) Causes of Sulfur Isotope Fractionation during Thermochemical Sulfate Reduction by Organic Matter
Chorney A, Watanabe Y, Ohmoto H, Hamasaki H & Graham U

(2017) ~3.46 Ga-Old Meteorite Fragments Suggest the Earth’s Core is Rich in Ti, Si and Ca
Graham U, Liu Z-K & Ohmoto H

(2017) Asteroid Impact-Induced Magmatism and Tectonics on the Early Earth
Ohmoto H & Graham U

(2017) Formation of Organic Matter and Iron Oxides by Aerobic Fe-Oxidizing Bacteria in a Deep Ocean 3.46 Ga ago
Watanabe Y, Graham U & Ohmoto H

(2017) Abiotic Synthesis of Organic Matter and Fe-Oxides in Archean Submarine Hydrothermal Plumes
Ohmoto H, Graham U & Watanabe Y

(2016) Geomicrobiology of a Stratified, Acidic Pit Lake in the Iberian Pyrite Belt
Grettenberger C, McCauley Rench R, Mills D, Gruen D, Carney C, Brainard J, Hamasaki H, Watanabe Y, Ohmoto H & Macalady J

(2014) Effect of CO2 on MoO42- Adsorption on Ferrihydrite
Miyazaki A & Ohmoto H

(2013) The Biological Control on the Atmospheric pCO2 Level Through Geologic Time
Ohmoto H & Lasaga A

(2013) Applications of Neutron Beam Analysis to Study the Origins of Carboneceous Matter in Terrestrial and Planetary Rocks: A New Approach
Watanabe Y, Furukawa Y, Kakegawa T & Ohmoto H

(2013) Ge/Si Atomic Ratio of Siliceous Deposit Formed from Geothermal Water: As an Indicator of Silica Source of BIF
Yokoyama T & Ohmoto H

(2013) Anomalous Isotope Fractionation of Sulfur (AIF-S) during Thermochemical Sulfate Reduction by Solid Organic Matter
Chorney A, Watanabe Y & Ohmoto H

(2012) Evidence for the O2 and CO2 Rich Archean Atmosphere
Ohmoto H, Watanabe Y, Yamaguchi K, Hamasaki H, Brainard J & Chorney A

(2012) Volcanogenic Massive Sulfide Deposits Host the Evidence for Sulfate-Rich Archean Oceans
Brainard J, Chorney A & Ohmoto H

(2012) Anomalous Fractionations of Sulfur Isotopes during High Temperature Reactions between Solid Organic C- and Oxidized S Compounds
Watanabe Y, Hamasaki H, Chorney A & Ohmoto H

(2011) Development of the Modern-Style Geochemical Cycle of Uranium by 3.5 Ga: A Solution to the “Lead Paradox”
Ohmoto H, Watanabe Y, Yamaguchi K, Bevacqua D, Johnson I & Rushton T

(2010) Geochemical Cycles of Fe, Mo, U, Cu, Cr, REEs, and S during the Period 3.5 – 3.2 Ga ago
Ohmoto H, Bevacqua D, Johnson I & Watanabe Y

(2010) Methane Hydrates: A Principal Source of Atmospheric Methane?
Brainard J & Ohmoto H

(2010) Evidence for the Presence of Cyanobacteria and Thermophylic Methanogens in a 3.46 Ga Sea, Western Australia
Watanabe Y, Hoashi M & Ohmoto H

(2010) Helium and Carbon Geochemistry of Hydrothermal Fluids on the Southern East Pacific Rise at 11-32 ˚S
Hamasaki H, Ishibashi J-I, Ueno Y, Lupton J & Ohmoto H

(2009) Primary Hematite Formation in an Oxygenated Deep Sea 3.46 Billion Years ago
Hoashi M, Bevacqua D, Otake T, Watanabe Y, Hickman A, Utsunomiya S & Ohmoto H

(2009) Earth’s Oldest (~3.4 Ga) Lateritic Paleosol in the Pilbara Craton, Western Australia
Johnson I, Watanabe Y, Stewart B & Ohmoto H

(2009) Redox Evolution of Volcanic Gas Through Geologic Time
Ohmoto H

(2009) Why Anomalous S Isotope Signatures Disappeared at ~2.4 Ga Ago?
Watanabe Y & Ohmoto H

(2009) REE+Y Geochemistry of the 3.46 Ga Marble Bar Chert Recovered by the Archean Biosphere Drilling Project (ABDP)
Yamaguchi K, Kato Y, Nakamura K, Suzuki K, Watanabe Y, Nedachi M & Ohmoto H

(2009) Fe, S, and C Isotopes Record Great Microbial Diversity in the Neoarchean
Johnson C, Yamaguchi K, Poulson S, Ohmoto H & Beard B

(2008) Anomalous S Isotope Fractionations during Reactions with an Organic Surface: I. Theoretical Investigations
Otake T, Lasaga A, Watanabe Y & Ohmoto H

(2008) Modeling the Chemical Evolution of the Atmosphere and Oceans
Ohmoto H & Lasaga A

(2008) Anomalous S Isotope Fractionations during Reactions with an Organic Surface: II. Investigations on Natural and Experimental Systems
Watanabe Y, Otake T, Lasaga A & Ohmoto H

(2008) Origins of Hematite, Magnetite and Siderite in Banded Iron Formations
Ohmoto H, Hoashi M, Otake T, Bevacqua D & Watanabe Y

(2007) A Study on the Formation Mechanism of Temagami Iron-Formations, Canada
Shimada Y, Yasumatsu A, Motomura Y, Okazaki R, Nakamura T, Ohmoto H, Okaue Y & Yokoyama T

(2007) Formation of Probable Lateritic Soils ~3.43 Ga in the Pilbara Craton, Western Australia
Ohmoto H, Watanabe Y, Allwood A, Burch I, Knauth P, Yamaguchi K, Johnson I & Altinok E

(2007) Linking the MIF-S Record of Sedimentary Rocks to Biological Evolution
Watanabe Y & Ohmoto H

(2007) Coupled C-S-Fe Isotope Variations in Archean-Paleoproterozoic Shales Trace Microbial Metabolisms and Redox State in the Early Earth
Yamaguchi K, Johnson C, Beard B, Poulson S & Ohmoto H

(2006) Geochemical study on Temagami Iron-Formations, Canada
Shimada Y, Yasumatsu A, Motomura Y, Okazaki R, Nakamura T, Ohmoto H, Okaue Y & Yokoyama T

(2005) The Absence of Mass Independent Fractionation of Sulfur Isotopes in Archean Sedimentary Rocks: An Insignificant Phenomenon?
Ohmoto H, Watanabe Y & Ikemi H

(2005) Magnetite Transformation to Hematite Under High H2 Pressure at 150 Degree C
Otake T, Wesolowski D, Anovitz L, Hayashi K & Ohmoto H

(2004) Iron-Sulfur-Carbon Contents and Isotope Systematics of 2.7 Ga Shallow and Deep Facies Black Shales from the Hamersley Basin, Australia
Yamaguchi K, Johnson C, Beard B & Ohmoto H

(2004) Evidence of a high-O2, high-CO2 and Low-Ch4 Archean Atmosphere in the 3.46 Ga Marble Bar Chert, Western Australia
Ohmoto H, Nedachi M, Kato Y, Bevaqua D & Watanabe Y

(2004) “Detrital” Pyrite Pebbles from Witwatersrand, South Africa: Evidence for an Oxygenated Archean Atmosphere?
Watanabe Y, Otake T, Altermann W & Ohmoto H

(2004) D15N Signatures of Late Archean Shales from Two Drilling Cores, Hamersley, Western Australia
Naraoka H, Watanabe Y, Nedachi M & Ohmoto H

(2003) Siderite in Archean Sedimentary Rocks: Evidence for a CO2-rich and CH4-poor Atmosphere
Ohmoto H & Watanabe Y

(2003) Gast Lecture: Chemical and Biological Evolution of the Early Earth: A Minority Report
Ohmoto H

(2003) Ce Anomalies in the 2.6-2.4 Ga Kalkkloof Paleosol in South Africa: Evidence for the Early Development of an Oxygenated Atmosphere
Watanabe Y, Nagase T & Ohmoto H

(2003) Iron Isotope Evidence for Redox Stratification of the Archean Oceans
Yamaguchi K, Beard B, Johnson C, Ohkouchi N & Ohmoto H

(2002) The Early Evolution of the Archean Nitrogen Biogeochemical Cycle
Yamaguchi K, Naraoka H, Watanabe Y & Ohmoto H

(2002) Paleoenvironmental Investigation of the Proterozoic Hokkalampi Paleosol, Eastern Finland
Stafford S, Capo RC, Stewart BW, Marmo J & Ohmoto H

(2001) Mass-Independent Fractionation of Sulfur Isotopes in Geologic Samples: Is It Real?
Ohmoto H, Yamaguchi K & Ono S

(2001) Modeling the Long-Term Evolution of Atmospheric Oxygen and Carbon Dioxide
Ohmoto H & Lasaga AC

(2001) Iron Isotope Stratification of Late Archean Seawater: Evidence from Dolomites and Banded Iron-Formations
Bau M, von Blanckenburg F & Ohmoto H

(2000) Constraints from REEs on the Processes and Environments for Precambrian Banded Iron Formations: Revaluation of the Data and Models
Yamaguchi KE, Bau M & Ohmoto H

(2000) The Oxygen Geochemical Cycle: Dynamics, Stability and Evolution
Lasaga AC & Ohmoto H

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