GP015
Refining Our Understanding of Earth and Planetary Magnetic Processes with Accurate Paleointensity Estimates
Session ID#: 83675
Session Description:
Accurately obtaining the strength of paleomagnetic fields (paleointensity) from Earth and extraterrestrial bodies is a key objective for studying many Earth and planetary processes, such as the thermal evolution of the core of Earth and planets, the formation and evolution of the early solar system, the formation and crystallization of the inner core and the possibility of an upcoming geomagnetic field reversal. This session welcomes contributions, which present high-quality absolute or relative paleointensity estimates that allow us to better understand Earth and planetary magnetic processes. We especially welcome contributions that develop new experimental techniques and analytical approaches to help us better estimate paleointensities. We also welcome (but not limited to) rock magnetic, microscopic and petrological studies that aid us to obtain accurate paleointensities, especially dealing with thermal alteration and multidomain effects for absolute paleointensities, and normalization issues for relative paleointensities.
Index Terms:
1503 Archeomagnetism [GEOMAGNETISM AND PALEOMAGNETISM]
1507 Core processes [GEOMAGNETISM AND PALEOMAGNETISM]
1521 Paleointensity [GEOMAGNETISM AND PALEOMAGNETISM]
1595 Planetary magnetism: all frequencies and wavelengths [GEOMAGNETISM AND PALEOMAGNETISM]
Primary Convener: Huapei Wang, China University of Geosciences (Wuhan), School of Earth Sciences, Wuhan, China
Conveners: Greig A Paterson, Chinese Academy of Sciences, Beijing, China and Shuhui Cai, Scripps Institution of Oceanography, La Jolla, CA, United States
Primary Liaison: Shuhui Cai, Scripps Institution of Oceanography, La Jolla, CA, United States
Transforming understanding of paleomagnetic recording: Insights from experimental observations and numerical predictions (Invited) (500716)
Lisa Tauxe1, Christeanne Nicole Santos2, Brendan J Cych2, Hyeon-seon Ahn3, Lesleis Nagy2, Yuhji Yamamoto4, Wyn Williams5 and Xiang Zhao6, (1)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, South Korea, (4)Kochi University, Center for Advanced Marine Core Research, Kochi, Japan, (5)Univ Edinburgh, Edinburgh, United Kingdom, (6)The Australian National University, Research School of Earth Sciences, Canberra, Australia
How reliable is the cooling rate correction of archaeointensity data? An experimental study on modern bricks (Invited) (500848)
Gwenael Herve, University Michel de Montaigne Bordeaux 3, Pessac Cedex, France, Annick Chauvin, University of Rennes, Rennes Cedex, France, Philippe Lanos, CNRS IRAMAT-CRPAA, Université Bordeaux-Montaigne and Géosciences-Rennes, Université Rennes 1, Rennes, France, Pierre Rochette, CEREGE ARBOIS, Aix En Provence, France, Mireille Perrin, CEREGE, Aix-en-Provence Cedex, France and Michel Perron d'Arc, Amphoralis, Musée des potiers gallo-romains, Sallèles d'Aude, France
Bayesian Paleointensity Estimation: Building a Framework to obtain Accurate and Precise Intensity Measurements. (508819)
Brendan J Cych, Scripps Institution of Oceanography, La Jolla, CA, United States, Joseph Wilson, University of Colorado Boulder, Philosophy, Boulder, CO, United States and Lisa Tauxe, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States
Controlled-atmosphere thermal paleointensity experiments and the history of the lunar dynamo (510225)
Benjamin P Weiss1, Saied Mighani1, Huapei Wang1,2, Jay Shah1, Jerome Gattacceca3, Sonia Tikoo4, Brenna Loree Getzin1 and David L Shuster5, (1)Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (2)China University of Geosciences, Planetary Science Institute, School of Earth Sciences, Wuhan, China, (3)CNRS, Aix Marseille Univ, CEREGE, Aix-En-Provence, France, (4)Stanford University, Department of Geophysics, Stanford, CA, United States, (5)University of California Berkeley, Department of Earth and Planetary Sciences, Berkeley, CA, United States
First archeointensity results recovered from central Thailand, Southeast Asia and the implications for chronology of the Phromthin Tai site (513150)
Shuhui Cai1, Lisa Tauxe2, Thanik Lertcharnrit3, Jack Ryan Hawley4 and Huafeng Qin1, (1)Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, (2)Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States, (3)Silpakorn University, Department of Archeology, Bangkok 10200, Thailand, (4)Humboldt State University, Arcata, CA, United States
Paleomagnetic Characterization of North American Clinker Deposits: Reliable Full Vector Recorders for the Quaternary (523746)
Courtney Jean Sprain1, Riley E Lamers2, Joshua M Feinberg3, Elliot Hurst4, Andrew Biggin4, Richard Bono4, Daniele Thallner5 and Greig A Paterson6, (1)University of Florida, Department of Geological Sciences, Gainesville, FL, United States, (2)University of Minnesota Twin Cities, Minneapolis, MN, United States, (3)University of Minnesota, Minneapolis, MN, United States, (4)University of Liverpool, Liverpool, United Kingdom, (5)University of Liverpool, Department of Earth, Ocean, and Ecological Sciences, Liverpool, United Kingdom, (6)University of Liverpool, School of Environmental Sciences, Liverpool, United Kingdom
Paleointensity variations around 30 Ma estimated from successive lava flows of the Afro-Arabian Large Igneous Province (532762)
Yutaka Yoshimura, Atmosphere and Ocean Research Institute University of Tokyo, Tokyo, Japan, Toshitsugu Yamazaki, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan, Yuhji Yamamoto, Kochi University, Center for Advanced Marine Core Research, Kochi, Japan, Hyeon-seon Ahn, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, South Korea, Tesfaye K Birke, University of KwaZulu-Natal, School of Earth Sciences, Durban, South Africa, Yo-Ichiro Otofuji, Kobe University, Hyogo, Japan and Naoto Ishikawa, Kyoto Univ, Kyoto, Japan
Late Holocene paleosecular variation and relative paleointensity record from Lagoa dos Patos (Rio Grande do Sul, Brazil) (586608)
Camila Trindade, UFRGS Federal University of Rio Grande do Sul, Porto Alegre, Brazil, Jairo F Savian, IAG-USP, Sao Paulo, Brazil, Everton Frigo, UNIPAMPA Federal University of Pampa, Cacapava Do Sul, Brazil, Michel D Ivannoff Sr., UFRGS Federal University of Rio Grande do Sul, Centro de Estudos Costeiros e Oceânicos, Porto Alegre, Brazil, Gelvam A Hartmann, USP University of Sao Paulo, Geophysics, São Paulo, Brazil and Elirio E Toldo Jr, UFRGS Federal University of Rio Grande do Sul, Centro de Estudos Costeiros e Oceânicos, Rio Grande, Brazil
Evaluating hydration effects on magnetic mineralogy and paleointensity in natural glass (587212)
Sebastian Simon Fearn1, Julie A Bowles2, Julia E Hammer3 and Fatimah Abdulghafur1, (1)University of Wisconsin Milwaukee, Department of Geosciences, Milwaukee, WI, United States, (2)University of Wisconsin Milwaukee, Geosciences, Milwaukee, WI, United States, (3)University of Hawaii at Manoa, Honolulu, HI, United States
Paleointensities during the Cretaceous Normal Superchron: new preliminary data from Costa Rica (600280)
Anita Di Chiara, Istituto Nazionale di Geofisica e Vulcanologia, Palermo, Italy, Lisa Tauxe, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States, Hubert Staudigel, Scripps Institution of Oceanography, La Jolla, CA, United States, Marino Protti, Observatorio Vulcanológico y Sismológico de Costa Rica, Heredia, Costa Rica and Fabio Florindo, INGV-ROME, Rome, Italy
Archaeomagnetic studies of burned daub: A California case study from the Grandad archaeological site in the central Sierra Nevada and experimental archaeology (608882)
Shelby Anne Jones-Cervantes1, John Pryor2, Lisa Tauxe3, Eric Blinman4, Marvin Rowe4 and Shana Powers5, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)California State University Fresno, Anthropology, Fresno, CA, United States, (3)Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States, (4)New Mexico Department of Cultural Affairs, New Mexico Office of Archaeological Studies, Santa Fe, NM, United States, (5)Santa Rosa Rancheria Tachi Yokut Tribe, Cultural Department, Lemoore, CA, United States
