GP23B:
The Geomagnetic Field on Long Timescales: Characterization and Linkages with Evolution of the Core and Mantle II Posters


Session ID#: 10466

Session Description:
We solicit contributions on the characterization of the geomagnetic field (paleo-directions and paleointensity) on time scales of hundreds of thousands of years to billions of years. Topics of interest include, but are not restricted to, the morphology of the field, the frequency of reversals, potential mantle control on the geodynamo, the timing of inner core growth, and the onset and persistence of a strong geomagnetic field. The session is planned to promote dialogue between experimental and theoretical aspects of the subject, so we welcome contributions ranging from paleomagnetic field investigations, numerical dynamo simulations, and theoretical studies.
Primary Convener:  John Anthony Tarduno, University of Rochester, Department of Physics & Astronomy, Rochester, NY, United States
Conveners:  Aleksey V Smirnov, Michigan Technological University, Geological and Mining Engineering and Sciences, Houghton, United States and Michael Edwin Evans, Univ of Alberta, Edmonton, AB, Canada
Chairs:  Michael E Evans, Univ of Alberta, Edmonton, AB, Canada and Aleksey V Smirnov, Michigan Technological University, Geological and Mining Engineering and Sciences, Houghton, United States
OSPA Liaison:  Aleksey V Smirnov, Michigan Technological University, Geological and Mining Engineering and Sciences, Houghton, United States

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
Index Terms:

1507 Core processes [GEOMAGNETISM AND PALEOMAGNETISM]
1521 Paleointensity [GEOMAGNETISM AND PALEOMAGNETISM]
1522 Paleomagnetic secular variation [GEOMAGNETISM AND PALEOMAGNETISM]
1535 Reversals: process, timescale, magnetostratigraphy [GEOMAGNETISM AND PALEOMAGNETISM]

Abstracts Submitted to this Session:

Absolute geomagnetic paleointensity in the Precambrian: Where do we stand? (Invited) (60030)
Evgeniy Kulakov1,2 and Aleksey V Smirnov1, (1)Michigan Technological University, Geological and Mining Engineering and Sciences, Houghton, United States, (2)Novosibirsk State University, Novosibirsk, Russia
Micro-conglomerate tests and the Hadean to Paleoarchean geodynamo as recorded in zircons of the Jack Hills (81508)
Rory Danielle Cottrell, University of Rochester, Earth and Environmental Sciences, Rochester, NY, United States, John Anthony Tarduno, University of Rochester, Department of Physics & Astronomy, Rochester, NY, United States; University of Rochester, Department of Earth & Environmental Sciences, Rochester, United States and Richard K. Bono, University of Liverpool, Liverpool, United Kingdom
Palaeomagnetic field strength variations suggest a Mesoproterozoic age of inner core nucleation (60805)
Andrew John Biggin1,2, Elisa J Piispa3, Lauri J Pesonen4, Richard T Holme1, Greig A Paterson5, Toni Veikkolainen4 and Lisa Tauxe6, (1)University of Liverpool, Liverpool, L69, United Kingdom, (2)University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, L69, United Kingdom, (3)Michigan Technological University, Houghton, United States, (4)Univ Helsinki, Helsinki, Finland, (5)Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, (6)Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States
Multi-scale analyses of magnetic carriers in the Jack Hills metaconglomerates, Western Australia: Further evidence for a primary magnetization (86417)
Matthew Stephen Dare, University of Rochester, Rochester, NY, United States, John Anthony Tarduno, University of Rochester, Department of Physics & Astronomy, Rochester, NY, United States; University of Rochester, Department of Earth & Environmental Sciences, Rochester, United States, Rory Danielle Cottrell, University of Rochester, Earth and Environmental Sciences, Rochester, NY, United States and Richard K. Bono, University of Liverpool, Liverpool, United Kingdom
Signature of inner core nucleation on the geodynamo (70569)
Evan Reynolds, Johns Hopkins University, Baltimore, MD, United States, Maylis Landeau, Johns Hopkins University, Baltimore, United States, Peter Olson, Johns Hopkins University, Department of Earth and Planetary Sciences, Baltimore, MD, United States and Julien Aubert, Institut de Physique du Globe, Paris, France
Ediacaran paleomagnetic field records from Laurentia: Insights into the evolution of the diversity of life and Earth’s deep interior (79280)
Richard K. Bono, University of Liverpool, Liverpool, United Kingdom and John Anthony Tarduno, University of Rochester, Department of Physics & Astronomy, Rochester, NY, United States; University of Rochester, Department of Earth & Environmental Sciences, Rochester, United States
Further Evidence for Unusual Geomagnetic Field Behavior Around the Precambrian-Cambrian Boundary from new Siberian paleomagnetic and magnetostratigraphic data (69364)
Sergey Rud'ko1, Andrey Shatsillo2, Vladimir Pavlov2, Yves Gallet3 and Nikolay Kouznetsov1, (1)Geological Institute RAS, Moscow, Russia, (2)Institute of Physics of the Earth RAS, Moscow, Russia, (3)CNRS, Paris Cedex 16, France
Do Jack Hills Detrital Zircons Contain Records of the Early Geodynamo? (80334)
Benjamin P Weiss1, Adam C Maloof2, Nicholas D Tailby3, Jahandar Ramezani4, Roger R Fu5, David R. Glenn6, Pauli Kehayias6, Ronald L Walsworth6, Veronica Hanus5, Dustin Trail7, E Bruce Watson3, T. Mark Harrison8, Samuel A Bowring9, Joseph L Kirschvink10, Nicholas Swanson-Hysell11, Robert S Coe12, Joshua Franz Einsle13 and Richard J Harrison14, (1)MIT, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States, (2)Princeton University, Department of Geosciences, Princeton, NJ, United States, (3)Rensselaer Polytechnic Institute, Troy, NY, United States, (4)MIT-EAPS, Cambridge, MA, United States, (5)Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States, (6)Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States, (7)University of Rochester, Rochester, NY, United States, (8)University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States, (9)Massachusetts Institute of Technology, Cambridge, MA, United States, (10)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, (11)University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (12)University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, (13)University of Cambridge, Department of Materials Science and Metallurgy, Department of Earth Sciences, Cambridge, United Kingdom, (14)University of Cambridge, Cambridge, United Kingdom
New absolute paleointensity determinations for the Permian-Triassic boundary from the Kuznetsk Trap Basalts. (62655)
Evgeniy Kulakov1, Dmitry V. Metelkin1 and Alexey Kazansky2, (1)Novosibirsk State University, Novosibirsk, Russia, (2)Lomonosov Moscow State University, Moscow, Russia
Nature of the Jurassic Magnetic Quiet Zone revealed by the sea-surface, mid-water, and near-source magnetic sensor data in the western Pacific. (63790)
Masako Tominaga, Texas A & M University College Station, College Station, TX, United States, Maurice Tivey, National Science Foundation, Arlington, VA, United States and William W Sager, University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States
A re-examination of paleomagnetic results from NA Jurassic sedimentary rocks: Additional evidence for proposed Jurassic MUTO? (75940)
Bernard A Housen, Western Washington University, Geology, Bellingham, WA, United States
Paleomagnetic interpretations of reversals and excursions in numerical dynamo simulations (66089)
Maxwell Christopher Brown1, Ingo Wardinski1 and Monika C Korte2, (1)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (2)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Section 2.3 – Geomagnetism, Potsdam, Germany
Milankovitch wobble? (84930)
Ross Nelson Mitchell1,2, Christopher Thissen3, Joseph L Kirschvink2, Daniel P Schrag4, Alessandro Montanari5, Rodolfo Coccioni6, Sarah P Slotznick7, Toshitsugu Yamazaki8, Brian Daniel Penserini9, Jacob N. H. Abrahams7, Marco Cruz-Heredia7 and David A Evans10, (1)Curtin University, School of Earth and Planetary Sciences, Perth, Australia, (2)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, (3)Yale University, New Haven, CT, United States, (4)Harvard Univ, Cambridge, MA, United States, (5)Osservatorio Geologico di Coldigioco, Apiro, Italy, (6)Università degli Studi di Urbino “Carlo Bo”, Dipartimento di Scienze Pure e Applicate, Urbino, Italy, (7)California Institute of Technology, Pasadena, CA, United States, (8)Geological Survey of Japan, Tsukuba, Japan, (9)Univ Oregon, Eugene, OR, United States, (10)Yale University, Department of Earth and Planetary Sciences, New Haven, CT, United States
Paleosecular variation and time-averaged field analysis over the last 10 Ma from a new global dataset (PSV10) (69518)
Geoff Cromwell, Occidental College, Los Angeles, CA, United States, Catherine Johnson, University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada, Lisa Tauxe, Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States, Catherine Constable, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States and Nicholas Jarboe, Organization Not Listed, Washington, DC, United States

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