GP005
Fundamental Rock Magnetism

Session ID#: 161642

Session Description:
The study of fundamental rock magnetism underpins all research that utilizes the magnetism of rocks, sediments, soils, archaeological artifacts, extraterrestrial materials and anthropogenic products to understand a broad range of subjects, such as the evolution of the geomagnetic field, tectonic reconstructions, environmental and climate change, planetary formation and geology, geobiology, and atmospheric pollution. Factors such as magnetic mineral composition, grain size and domain state influence a material’s magnetic properties and remanence acquisition and can reflect external processes that can modify a material and its encrypted remanence through time. In this session we cover research advances on the magnetic properties of natural materials, minerals, and particle assemblages; their ability to acquire and retain a remanence; and how natural and laboratory-based processes can modify a material’s magnetic properties or remanence. Contributions are invited from all areas of mineral and rock magnetism, including new theoretical, numerical, experimental, and analytical approaches, as well as fundamental and applied studies of magnetic minerals, grain size-dependent magnetic properties, magnetic anisotropy, magnetic characterization of mineral/grain size mixtures, and quantitative models of the behavior of natural and synthetic magnetic systems.
Index Terms:

1505 Biogenic magnetic minerals [GEOMAGNETISM AND PALEOMAGNETISM]
1519 Magnetic mineralogy and petrology [GEOMAGNETISM AND PALEOMAGNETISM]
1533 Remagnetization [GEOMAGNETISM AND PALEOMAGNETISM]
1540 Rock and mineral magnetism [GEOMAGNETISM AND PALEOMAGNETISM]

Primary Convener:  Maxwell Christopher Brown, University of Minnesota, Institute for Rock Magnetism, Department of Earth and Environmental Sciences, Minneapolis, MN, United States
Conveners:  Thomas Berndt, Peking University, School of Earth and Space Sciences, Beijing, China and Dario Bilardello, University of Minnesota, Institute for Rock Magnetism, Minneapolis, MN, United States
 
Calibration of non-heating methods for paleointensity estimation from chemical remanent magnetization (Invited) (1043002)
Clara Maurel, MIT, Earth, Atmospheric and Planetary Sciences, Cambridge, United States and Jerome Gattacceca, CNRS, Aix Marseille Univ, CEREGE, Aix-En-Provence, France
 
Paleosecular variations spanning the past 8 ka recorded by relict magnetic minerals in anoxic Black Sea sapropels (1055067)
Liu Jiabo, China University of Geosciences Wuhan, Institute of Geophysics and Geomatics, Wuhan, China, Norbert R Nowaczyk, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Section 4.3 – Paleoclimate and Landscape evolution, Potsdam, Germany, Xiaodong Jiang, Southern University of Science and Technology, Shenzhen, China, Yi Zhong, Southern University of Science and Technology, ShenZhen, China, Richard Wirth, GeoForschungsZentrum Postsdam, Postdam, Germany, Helge W Arz, Leibniz Institute for Baltic Sea Research, Rostock, Germany and Liu Qingsong, Inst. of Geology & Geophysics, Beijing, China
 
Chasing tails: Insights for thermomagnetic recording in non-uniform magnetic structures from micromagnetic modeling (Invited) (1055480)
Lesleis Nagy, University of Liverpool, Liverpool, United Kingdom, Wyn Williams, Univ Edinburgh, Edinburgh, United Kingdom, Lisa Tauxe, Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States and Adrian R Muxworthy, Imperial College London, Earth Science and Engineering, London, United Kingdom
 
What Are Bulk Sediment Magnetic Records? (1058372)
Robert G Hatfield1, Joseph Stephen Stoner2, Benjamin Freiberg3, James Kowalski1 and Brendan T Reilly4, (1)University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (3)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (4)Scripps, San Diego, United States
 
Understanding first-order reversal curve diagrams for hematite (1060560)
Andrew P Roberts1, Xiang Zhao2, Pengxiang Hu3, Alexandra Abrajevitch4, Yen-Hua Chen5, Richard J Harrison6, David Heslop2, Zhaoxia Jiang7, Liu Qingsong8, Adrian R Muxworthy9, Hirokuni Oda10, Hugh S O'Neill11 and Bradley Pillans12, (1)Australian National University, Canberra, ACT, Australia, (2)Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, (3)The Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, (4)Institute of Tectonics and Geophysics FEB RAS, Khabarovsk, Russia, (5)NCKU National Cheng Kung University, Tainan, Taiwan, (6)Univ Cambridge, Cambridge, United Kingdom, (7)Ocean University of China, Qingdao, China, (8)Inst. of Geology & Geophysics, Beijing, China, (9)Imperial College London, Earth Science and Engineering, London, United Kingdom, (10)National Institute of Advanced Industrial Science and Technology (AIST), Geological Survey of Japan, Tsukuba, Japan, (11)Australian National University, Canberra, Australia, (12)The Australian National University, The Research School of Earth Sciences, Canberra, Australia
 
How Micromagnetic Tomography deals with MicroCT Limitations: The Grain Size Distribution of Magnetite in Hawaiian Basalts (1062305)
Frenk Out, University Utrecht, Utrecht, Utrecht, NETHERLANDS, Rosa A de Boer, Utrecht University, Earth Sciences, Utrecht, Netherlands, John Walmsley, University of Cambridge, Materials Science & Metallurgy, Cambridge, United Kingdom and Lennart V de Groot, Utrecht University, Geoscience, Utrecht, Netherlands
 
Inferring The Internal Magnetic State Of Single Magnetite Grains Via Micromagnetic Modelling, Multipole Inversions And Micromagnetic Tomography (1065503)
David Cortés-Ortuño, Utrecht University, Utrecht, Netherlands, Karl Fabian, Norwegian University of Science and Technology, Trondheim, Norway and Lennart V de Groot, Utrecht University, Geoscience, Utrecht, Netherlands
 
Size Ranges of Magnetic Domain States in Tetrataenite and Implications for Past and Future Paleomagnetic Studies (1066096)
Elias Mansbach1, Jay Shah2, Wyn Williams3, Clara Maurel4, James Bryson5 and Benjamin P Weiss4, (1)Massachusetts Institute of Technology, Cambridge, MA, United States, (2)Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (3)Univ Edinburgh, Edinburgh, United Kingdom, (4)MIT, Earth, Atmospheric and Planetary Sciences, Cambridge, United States, (5)University of Oxford, Oxford, United Kingdom
 
Micromagnetic Tomography: towards a useful tool for paleomagnetic and rock-magnetic studies (1071814)
Lennart V de Groot1, Karl Fabian2, David Cortés-Ortuño3, Rosa A de Boer4, Frenk Out5, Martha Kosters4 and Michael Volk3, (1)Utrecht University, Paleomagnetic laboratory Fort Hoofddijk, Utrecht, Netherlands, (2)Norwegian University of Science and Technology, Trondheim, Norway, (3)Utrecht University, Utrecht, Netherlands, (4)Utrecht University, Earth Sciences, Utrecht, Netherlands, (5)University Utrecht, Utrecht, Utrecht, NETHERLANDS
 
A Micromagnetic Approach To Determining The FORC Response Of Single-Vortex Signals. (1079042)
Adrian R Muxworthy1, Wyn Williams2, Lesleis Nagy3, Greig A Paterson3, Roberto Moreno4, Lisa Tauxe5 and Miguel A. Valdez-Grijalva6, (1)Imperial College London, Earth Science and Engineering, London, United Kingdom, (2)Univ Edinburgh, Edinburgh, United Kingdom, (3)University of Liverpool, Liverpool, United Kingdom, (4)University of Edinburgh, School of GeoSciences, Edinburgh, United Kingdom, (5)Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States, (6)Mexican Institute of Petroleum, Ciudad DE México, Mexico
 
Rock Magnetic Properties vis-à-vis Thermal Gradient in Volcanic Provinces: Studies from Rajmahal Traps, India (1079643)
Saurodeep Chatterjee, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad, India, Mohammad Arif, Birbal Sahni Institute of Palaeosciences, Palaeomagnetism Laboratory, Lucknow, India, India and Sahendra Singh, Indian Institute of Technology (ISM), Applied Geology, Dhanbad, India, India
 
From Night to Day: Shedding Light on Vortex Behavior in the Day Diagram (1089880)
Wyn Williams1, Roberto Moreno2, Adrian R Muxworthy3, Lesleis Nagy4 and Greig A Paterson4, (1)University of Edinburgh, School of GeoSciences, Edinburgh, EH9, United Kingdom, (2)University of Edinburgh, School of GeoSciences, Edinburgh, United Kingdom, (3)Imperial College London, Earth Science and Engineering, London, United Kingdom, (4)University of Liverpool, Liverpool, United Kingdom
 
Greigite (Fe3S4) as the Magnetic Carrier of the Paleolake sediments from the Most Basin, Czech Republic (1101173)
Hakan Ucar1, Gunther Kletetschka1,2, Petr Schnabl3, Karel Mach4, Michael S Petronis5 and Hana Grison6, (1)Charles University, Faculty of Science, Prague, Czech Republic, (2)Academy of Sciences of the Czech Republic, Institute of Geology, Prague, Czech Republic, (3)Czech Academy of Sciences, Institute of Geology, Prague, Czech Republic, (4)North Bohemian Mines, j.s.c., Bilina, Czech Republic, (5)New Mexico Highlands Univ, Las Vegas, NM, United States, (6)Academy of Sciences of the Czech Republic, Institute of Geophysics, Prague, Czech Republic
 
The intensity of remanence in speleothems: Acquisition of magnetization in an actively crystallizing matrix (1101513)
Rashida Doctor, University of Minnesota Twin Cities, Minneapolis, MN, United States, Joshua M Feinberg, University of Minnesota, Institute for Rock Magnetism, Department of Earth & Environmental Sciences, Minneapolis, MN, United States and Plinio Jaqueto, Universidade de São Paulo, Geophysics, Sao Paulo, Brazil
 
Contribution of Silicate-hosted Magnetic Inclusions to Paleomagnetic Signals in Sediments Subjected to Reductive Diagenesis (1101975)
Jiaxi Li1, Toshitsugu Yamazaki1, Masahiko Sato2 and Junichiro Kuroda1, (1)Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan, (2)The University of Tokyo, Tokyo, Japan
 
MagNet: Automated Magnetic Mineral Grain Morphometry Using Convolutional Neural Network (1106978)
Zhaowen Pei1, Liao Chang2, Pengfei Xue2 and Richard J Harrison3, (1)Peking University, Beijing, China, (2)Peking University, School of Earth and Space Sciences, Beijing, China, (3)Univ Cambridge, Cambridge, United Kingdom
 
Aragonitic stalagmites record of the geomagnetic field: Paleomagnetic promise and limitations (1115358)
Plinio Jaqueto, University of Minnesota, Institute for Rock Magnetism, Minneapolis, United States, Joshua M Feinberg, University of Minnesota, Institute for Rock Magnetism, Department of Earth & Environmental Sciences, Minneapolis, MN, United States, Rashida Doctor, University of Minnesota Twin Cities, Minneapolis, MN, United States, Maetzin Cruz-Reyes, University of Minnesota Twin Cities, Department of Chemistry, Minneapolis, United States, Lee Penn, University of Minnesota Twin Cities, Chemistry, Minneapolis, MN, United States, Ioan Lascu, Smithsonian Institution, National Museum of Natural History, Washington, United States, Caue Borlina, Johns Hopkins University, Department of Earth and Planetary Sciences, Baltimore, MD, United States, Eduardo A. Lima, MIT-Earth & Planetary Sciences, Cambridge, MA, United States, Nicolas M Strikis, Universidade Federal Fluminense, Geochemestry Department, Niteroi, Brazil, Valdir Felipe Novello, University of Tübingen, Department of Geosciences, Tübingen, Germany, Ricardo IF Trindade, Universidade de São Paulo, Geophysics, São Paulo, Brazil and Francisco William Cruz Sr., Universidade de São Paulo, Instituto de Geociências, São Paulo, Brazil
 
Quantifying Inclination Shallowing and Representing Flattening Uncertainty in Sedimentary Paleomagnetic Poles (1129511)
Nicholas Swanson-Hysell1, James S Pierce2,3, Yiming Zhang2 and Eben Blake Hodgin2, (1)University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (2)University of California Berkeley, Earth and Planetary Science, Berkeley, United States, (3)Yale University, Department of Earth and Planetary Sciences, New Haven, CT, United States
 
PALEOMAGNETISM AND ROCK MAGNETISM OF UPPER PERMIAN/LOWER TRIASSIC BEAUFORT GROUP STRATA AND EARLY JURASSIC MAFIC SILLS FROM PIERSNAARBAKEN SECTION, EASTERN KAROO BASIN, SOUTH AFRICA (1133237)
Solomon Omajuwa Akatakpo, University of Texas at Dallas, Richardson, TX, United States, John W Geissman, University of Texas at Dallas, Department of Geosciences, Richardson, TX, United States, Robert A. Gastaldo, Colby College, Department of Geology, Waterville, ME, United States, Johann Neveling, Council for Geosciences, Pretoria, South Africa and Cindy V Looy, University California Berkeley, Berkeley, CA, United States
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