GP42A:
Biogeomagnetism, Biogenic Magnetic Minerals, and the Environment I


Submit an Abstract to this Session


Session ID#: 56727

Session Description:
Organisms mineralize directly or indirectly magnetic minerals and use them for known and unknown purposes in various natural processes within the present and past environments on Earth. We solicit contributions on all research aspects of bio-geomagnetism enabling to further our understanding. Examples include, but are not limited to, the diversity and characterization of magnetotactic bacteria and other Fe(III)-reducing and Fe(II)-oxidizing microorganisms in natural habitats and laboratory cultures; origin and evolution of magnetotaxis; mineralization, magnetism and applications of biogenic magnetic nano-minerals; magnetofossils at critical transitions in the geological past (e.g., polarity transitions, hyper-thermal climate events, radiations and extinctions), and their contributions to sedimentary magnetism; magnetoreception and magnetic navigation by animals; long-term correlation of deep-time geological and paleomagnetic records. Experimental investigations and theoretical simulations of the influence of changing geomagnetic fields on organisms and the biosphere as a whole (and through associated atmospheric and cosmic radiation variations) are also solicited.
Primary Convener:  Yongxin Pan, Paleomagnetism and Geochronology Laboratory, Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
Conveners:  John Anthony Tarduno, University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States, Ioan Lascu, Smithsonian Institution, Washington, United States and France Lagroix, IPGP, Paris, France
Primary Liaison:  France Lagroix, IPGP, Paris, France
Chairs:  Ioan Lascu, Smithsonian Institution, Washington, United States and Yongxin Pan, Paleomagnetism and Geochronology Laboratory, Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
OSPA Liaison:  Ioan Lascu, Smithsonian Institution, Washington, United States
Index Terms:

1505 Biogenic magnetic minerals [GEOMAGNETISM AND PALEOMAGNETISM]
1512 Environmental magnetism [GEOMAGNETISM AND PALEOMAGNETISM]
1527 Paleomagnetism applied to geologic processes [GEOMAGNETISM AND PALEOMAGNETISM]
1540 Rock and mineral magnetism [GEOMAGNETISM AND PALEOMAGNETISM]

Abstracts Submitted to this Session:

Magnetite pollution nanoparticles: a possible environmental risk factor for Alzheimer's disease. (435438)
Barbara Maher, University of Lancaster, Lancaster Environment Centre, Lancaster, United Kingdom
Significance of Magnetotactic Bacteria: Agents of Planetary Biogeochemical Cycling? (Invited) (439941)
Dennis A Bazylinski, University of Nevada Las Vegas, School of Life Sciences, Las Vegas, NV, United States
Diversity and magnetism of magnetotactic bacteria: Towards the identification of magnetofossils (394302)
Jinhua LI, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China and Yongxin Pan, Paleomagnetism and Geochronology Laboratory, Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
Micromagnetic simulation of magnetofossils with realistic size and shape distributions: Linking rock magnetism with microscopic observations and implications for magnetofossil identification (400718)
Liao Chang1, Richard J Harrison2 and Thomas Berndt1, (1)Peking University, School of Earth and Space Sciences, Beijing, China, (2)University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom
Using iron isotopes for identification of magnetotactic bacteria fossils (Invited) (413923)
Matthieu Amor1, Vincent Busigny2, Guyot Francois3 and Arash Komeili1, (1)University of California Berkeley, Plant and Microbial Biology, Berkeley, CA, United States, (2)Université de Paris & Institut de Physique du Globe de Paris, Paris, France, (3)Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Paris Cedex 05, France
Magnetotactic bacterium Magnetospirillum magneticum AMB-1 displays magnetic field dependent growth (406992)
Eric Mumper1, Christopher Pierce2, Rhea H. Mehta3, Nathan Lee3, Michael Barton1, Michael J Wilkins4, Ratnasingham Sooryakumar3, Brian H Lower3, Dennis A Bazylinski5 and Steven K Lower3, (1)Ohio State University Main Campus, Columbus, OH, United States, (2)Montana State University, Department of Earth Sciences, Bozeman, MT, United States, (3)Ohio State University Main Campus, Columbus, United States, (4)Ohio State University Main Campus, School of Earth Sciences, Columbus, OH, United States, (5)Univ. of Nevada, Las Vegas, Las Vegas, NV, United States
DIAGENETIC FATE OF BIOGENIC SOFT AND HARD MAGNETITE IN CHEMICALLY STRATIFIED SEDIMENTARY ENVIRONMENTS OF SACO DO MAMANGUÁ, BRAZIL (383795)
Daniel Rodelli1, Luigi Jovane2, Martino Giorgioni1, Fernanda Abreu3, Flaminia Cornaggia1, Mariana Benites1, Patricia Padua Cedraz1, Blaucia Berbel1, Elisabete de Santis Braga4, Andrea Ustra5, Jefferson Cypriano3 and Andrew P Roberts6, (1)USP University of Sao Paulo, São Paulo, Brazil, (2)Oceanographic Institute of the University of São Paulo, Department of Fisical Oceanography, São Paulo, Brazil, (3)Universidade Federal Fluminense, Niteroi, Brazil, (4)University of Sao Paulo, Oceanographic Institute, São Paulo, Brazil, (5)IAG Institute of Astronomy, Geophysics and Atmospheric Sciences, Geophysics, Sao Paulo, Brazil, (6)Australian National University, Research School of Earth Sciences, Canberra, Australia
Magnetic signature of a glacial event at 2.45 Ga in the Boolgeeda iron formation, Hamersley Basin, Western Australia. (447403)
Julie Carlut1, Aude Isambert2, Pascal Philippot3, Vincent Busigny4, Adèle Nivart2 and Helene Bouquerel5, (1)IPGP, Paris, NULL, France, (2)Institut de Physique du Globe de Paris, Paris, France, (3)Institut de Physique du Globe de Paris, Sorbonne-Paris Cité, Université Paris Diderot, CNRS, Paris, France, (4)Université de Paris & Institut de Physique du Globe de Paris, Paris, France, (5)Université Paris Cité, Institut de physique du globe de Paris, CNRS, F-75005 Paris, France, Paris, France

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