NAI
Brian Beard
University of Wisconsin, Madison
Current Projects
- Developing Methods for Life Detection on Mars and in Mars Analog Environments — 2016 NAI
- Project 2A: Application of the 13C-18O Clumped Isotope Thermometer to the Ancient Earth — 2015 NAI
- Project 3C: A Redox-Stratified Ocean 3.2 Billion Years Ago — 2015 NAI
- Project 3B: Biologically Recycled Continental Iron Is a Major Component in Banded Iron Formations — 2015 NAI
- Project 2B: Cation Content of Carbonate Minerals as a pCO2 Proxy: Inorganic Synthesis Experiments — 2015 NAI
- Project 2F: Silicon Isotopes as a Tracer of the Coupled Fe-Si Cycle in the Archean — 2014 NAI
- Project 2G: Iron Isotope Fractionations Among Oxide Minerals Under Acidic Conditions — 2014 NAI
- Project 3C: The Role of Early Continental Weathering in Providing a Habitable Planet — 2014 NAI
- Project 3D: A Microbial Iron Shuttle in Early Earth Marine Basins — 2014 NAI
- Project 1D: Iron Biogeochemistry in Chocolate Pots Hot Spring, Yellowstone National Park — 2014 NAI
- Project 2C: Developing the 13C-18O Clumped Isotope Thermometer — 2014 NAI
- Project 2D: Magnesium Isotopes in Carbonates as a Tracer of Marine Conditions in the Early Earth — 2014 NAI
- Project 2B: Origin of Carbonates: Environmental Proxies and Formation Pathways — 2013 NAI
- Project 2C: Calibrating the [^13^]C-[^18^]O (“clumped”) Isotope Temperature Scale — 2013 NAI
- Project 2A: Magnesium Isotope Fractionation Between Brucite [Mg(OH)2] and Mg Aqueous Species — 2013 NAI
- Project 3A: Banded Iron Formation Deposition Across the Archean-Proterozoic Boundary — 2013 NAI
- Project 4A: Better, Faster, Smaller Fe Isotope Analysis on Iron Oxides and Sulfides by Femtosecond Laser Ablation: Aerosol Characterization and the Influence of Ablation Cells — 2013 NAI
- Project 5A: Improvement in the Accuracy of Stable Isotope Analysis by Laser Ablation — 2012 NAI
- Project 5B: A Rover-Based Miniature Mass-Spectrometer - Breakthroughs in Laser Ablation Analysis and Geochronology — 2012 NAI
- Project 3C: In Situ Fe Isotope Analysis of Iron Formations — 2012 NAI
- Project 4E: Preliminary Studies of Fe Isotope Biogeochemistry in Fe-Rich Yellowstone National Park Hot Springs — 2012 NAI
- Project 3D: Constraints on Oxygen Contents in Earth’s Early Atmosphere and Implications for Evolution of Photosynthesis — 2012 NAI
- Project 1C: U-Th-Pb Geochronology of the 3.4 Ga Apex Basalt Suggests an Anoxic Early Earth Atmosphere — 2011 NAI
- Project 7C: Improving Accuracy of in Situ Stable Isotope Analysis by SIMS — 2011 NAI
- Project 7B: Development of a Laser Ablation, Electron-Impact Miniature Mass Spectrometer (LA-EI-MMS) for in Situ Chemical and Isotopic Composition and Age Determinations of Martian Rocks — 2011 NAI
- Project 5B: Magnesium Isotope Fractionation Between Calcite and Aqueous Mg — 2011 NAI
- Project 4C: Iron Isotope Geochemistry in Biogenic Magnetite-Bearing Lake Sediments — 2011 NAI
- Project 4B: Iron Isotope Biosignatures - Synthesis of Abiotic and Biotic Laboratory Experiments — 2011 NAI
- Project 3C: Integration of Multiple Isotope Proxies to Study the Pre-GOE Oxygenation of the Earth — 2011 NAI
- Project 2D: Establishing Biogenicity and Environmental Setting of Precambrian Kerogen and Microfossils — 2011 NAI
- Project 1B: U-Th-Pb Geochronology and Fe Isotopes of the 3.4 Ga Marble Bar Chert Indicates Early Anoxygenic Photosynthesis — 2011 NAI
- Project 1A: Rb-Sr Geochronology of ALH84001 Demonstrates Early Weathering on Mars — 2011 NAI
- Project 3B: Do Iron-Rich Carbonates From Banded Iron Formations Record Ancient Seawater? — 2010 NAI
- Project 4A: Improving Accuracy of in Situ Stable Isotope Analysis by SIMS — 2010 NAI
- Project 3C: Iron Isotope Biosignatures: Laboratory Studies and Modern Environments — 2010 NAI
- Project 4B: Development of Laser Ablation-Miniature Mass Spectrometer (LA-MMS) for Geochronology and Geochemistry of Martian Rocks — 2010 NAI
- Project 5D: The Rock That Started It All: Geochronology of Mars Meteorite ALH84001 — 2010 NAI
- Project 5C: Fluid-Mineral Fractionation of Mg Isotopes and Tracing the Origin of Sulfate Minerals — 2010 NAI
- Project 3A: Quantifying the Amount of Free Oxygen in the Neoarchean Photic Zone Through Combined Fe and Mo Isotopes — 2010 NAI
- Laser Ablation-Electron Impact Ionization-Miniature Mass Spectrometer (LA-EI-MMS) for In-Situ Geochronology and Hydrology of Martian Rocks — 2009 NAI
- Iron Isotope Biosignatures: Laboratory Studies and Modern Environments — 2009 NAI
- New Frontiers in Micro-Analysis of Isotopic Compositions of Natural Materials: Development of Fe Isotopes — 2009 NAI
- Development of Laser Ablation-Electron Impact Ionization-Miniature Mass Spectrometer (LA-EI-MMS) for In-Situ Chemical and Isotopic Measurements of Martian Rocks — 2009 NAI
- Co-Evolution of Microbial Metabolisms in the Neoarchean and Paleoproterozoic — 2009 NAI
- Iron Isotope Biosignatures: Laboratory Studies and Modern Environments — 2008 NAI
- New Frontiers in Micro-Analysis of Isotopic Compositions of Natural Materials: Development of Fe Isotopes — 2008 NAI
- Fe Isotope Biosignatures — 2003 NAI
- Fe Isotope Biosignatures — 2002 NAI
- Fe Isotope Biosignatures Group — 2001 NAI
- Fe Isotope Biosignatures — 2000 NAI
- View all 50 projects
NAI Project Collaborators
- Project collaborators as reported by the latest NAI Annual Report.
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Catherine Woodward
Institute for Biology Education - Mazomanie Outreach Outpost
Collaborated on 1 Project
Publications
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Czaja, A. D., Johnson, C. M., Beard, B. L., Eigenbrode, J. L., Freeman, K. H., & Yamaguchi, K. E. (2010). Iron and carbon isotope evidence for ecosystem and environmental diversity in the ∼2.7 to 2.5Ga Hamersley Province, Western Australia. Earth and Planetary Science Letters, 292(1-2), 170–180. doi:10.1016/j.epsl.2010.01.032
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Czaja, A. D., Johnson, C. M., Yamaguchi, K. E., & Beard, B. L. (2012). Comment on “Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation”. Science, 335(6068), 538–538. doi:10.1126/science.1211804
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Heimann, A., Johnson, C. M., Beard, B. L., Valley, J. W., Roden, E. E., Spicuzza, M. J., & Beukes, N. J. (2010). Fe, C, and O isotope compositions of banded iron formation carbonates demonstrate a major role for dissimilatory iron reduction in ~2.5Ga marine environments. Earth and Planetary Science Letters, 294(1-2), 8–18. doi:10.1016/j.epsl.2010.02.015
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Kita, N. T., Huberty, J. M., Kozdon, R., Beard, B. L., & Valley, J. W. (2010). High-precision SIMS oxygen, sulfur and iron stable isotope analyses of geological materials: accuracy, surface topography and crystal orientation. Surf. Interface Anal., 43(1-2), 427–431. doi:10.1002/sia.3424
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Li, W., Beard, B. L., & Johnson, C. M. (2011). Exchange and fractionation of Mg isotopes between epsomite and saturated MgSO4 solution. Geochimica et Cosmochimica Acta, 75(7), 1814–1828. doi:10.1016/j.gca.2011.01.023
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Percak-Dennett, E. M., Beard, B. L., Xu, H., Konishi, H., Johnson, C. M., & Roden, E. E. (2011). Iron isotope fractionation during microbial dissimilatory iron oxide reduction in simulated Archaean seawater. Geobiology, 9(3), 205–220. doi:10.1111/j.1472-4669.2011.00277.x
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Percak-Dennett, E. M., Loizeau, J-L., Beard, B. L., Johnson, C. M., & Roden, E. E. (2013). Iron isotope geochemistry of biogenic magnetite-bearing sediments from the Bay of Vidy, Lake Geneva. Chemical Geology, 360-361, 32–40. doi:10.1016/j.chemgeo.2013.10.008
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Sinha, M. P., Neidholdt, E. L., Hurowitz, J., Sturhahn, W., Beard, B., & Hecht, M. H. (2011). Laser ablation-miniature mass spectrometer for elemental and isotopic analysis of rocks. Review of Scientific Instruments, 82(9), 094102. doi:10.1063/1.3626794
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Wu, L., Beard, B. L., Roden, E. E., & Johnson, C. M. (2011). Stable Iron Isotope Fractionation Between Aqueous Fe(II) and Hydrous Ferric Oxide. Environ. Sci. Technol., 45(5), 1847–1852. doi:10.1021/es103171x
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Wu, L., Beard, B. L., Roden, E. E., Kennedy, C. B., & Johnson, C. M. (2010). Stable Fe isotope fractionations produced by aqueous Fe(II)-hematite surface interactions. Geochimica et Cosmochimica Acta, 74(15), 4249–4265. doi:10.1016/j.gca.2010.04.060
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Wu, L., Brucker, R. P., Beard, B. L., Roden, E. E., & Johnson, C. M. (2013). Iron Isotope Characteristics of Hot Springs at Chocolate Pots, Yellowstone National Park. Astrobiology, 13(11), 1091–1101. doi:10.1089/ast.2013.0996
See Project See Project - Czaja, A.D., Johnson, C.M., Beard, B.L., Roden, E.E. & Li, W. (2012, Submitted). Likely role for limited biological Fe oxidation in 1 the deposition of the 3.7–3.8 Ga Isua banded iron formation determined by multiple scales of Fe isotope analyses. Earth and Planetary Science Letters. See Project
- Johnson, C.M., Beard, B.L. & Roden, E.E. (2008b). The iron isotope fingerprints of redox and biogeochemical cycling in modern and ancient Earth: Annual. Rev. Earth Planet. Sci, 36: 457-493. See Project
- Johnson, C.M., Yamaguchi, K.E., Poulson, S.R., Ohmoto, H. & Beard, B.L. (2009). Fe, S, and C isotopes record great microbial diversity in the Neoarchean. 19th Goldschmidt conference, Davos, Switzerland. Geochim. Cosmochim. Acta, 73(13S): A600. See Project
- Li, W., Beard, B. & Johnson, C. (2012, In Press). U-Th-Pb isotope data indicate Phanerozoic age for oxidation of 3.4 Ga basalts from Marble Bar, Pilbara Craton, NW Australia. Earth and Planetary Sciences Letters,. See Project
- Li, W., Johnson, C. & Beard, B. (20111). U-Th-Pb isotopic constraints on the oxidation age of 3.4 Ga basalts from Marble Bar, Pilbara Craton, NW Australia. AGU Fall Meeting. See Project
- Ludois, J.M., Johnson, C.M., Beard, B.L., Roden, E.E., Beukes, N.J. & Heimann, A. (2010, Submitted). Strontium isotopes in Banded Iron Formation carbonates demonstrate disequilibrium with ancient seawater. See Project
- Ludois, J.M., Sinha, M.P., Johnson, C.M., Fournelle, J. & Beard, B.L. (2010). Rb-Sr Geochronology by Laser Ablation of Neutrals by Miniature Mass Spectrometry on Sulfate Mineral: Possible Applications for In-Situ Analysis on Mars. Astrobiology Science Conference 2010. League City, TX. See Project
- View all 18 publications
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Phone:
608-262-1806 -
Fax:
608-262-0693 -
Email:
beardb@geology.wisc.edu -
Discipline
Microbiology
Past NAI Teams
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NASA Jet Propulsion Laboratory
CAN 1 -
University of Wisconsin
CAN 6 -
University of Wisconsin
CAN 4