FN Archimer Export Format
PT J
TI Paleomagnetic recording efficiency of sedimentary magnetic mineral inclusions: implications for relative paleointensity determinations
BT 
AF Hong, Hoabin
   Chang, Liao
   Hayashida, Akira
   Roberts, Andrew P.
   Heslop, David
   Paterson, Greig A.
   Kodama, Kazuto
   Tauxe, Lisa
AS 1:1;2:1,2;3:3;4:4;5:4;6:5,6;7:7;8:8;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University Beijing P. R. ,China
   Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology Qingdao P. R., China
   Department of Environmental Systems ScienceDoshisha University Kyoto, Japan
   Research School of Earth Sciences, Australian National University Canberra ,Australia
   Department of Earth, Ocean and Ecological SciencesUniversity of Liverpool Liverpool, UK
   Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences Beijing P. R. ,China
   Research Center for Knowledge Science in Cultural Heritage, Doshisha University Kyoto, Japan
   Scripps Institution of Oceanography, University of California San Diego La Jolla CA ,USA
C2 UNIV PEKING, CHINA
   QNLM, CHINA
   UNIV KYOTO, JAPAN
   UNIV CANBERRA, AUSTRALIA
   UNIV LIVERPOOL, UK
   CHINESE ACAD SCI, CHINA
   UNIV DOSHISHA, JAPAN
   UNIV CALIF SAN DIEGO, USA
IF 3.638
TC 7
UR https://archimer.ifremer.fr/doc/00505/61685/65640.pdf
LA English
DT Article
CR MD 122 / WEPAMA
BO Marion Dufresne
DE ;magnetic mineral inclusions;relative paleointensity;detrital remanent magnetization
AB Sedimentary relative paleointensity (RPI) records are often carried by complex magnetic mineral mixtures, including detrital and biogenic magnetic minerals. Recent studies have demonstrated that magnetic inclusions within larger detrital silicate particles can make significant contributions to sedimentary paleomagnetic records. However, little is known about the role such inclusions play in sedimentary paleomagnetic signal recording. We analyzed paleomagnetic and mineral magnetic data for marine sediment core MD01‐2421 from the North Pacific Ocean, offshore of central Japan, to assess how magnetic inclusions and other detrital magnetic minerals record sedimentary paleomagnetic signals. Stratigraphic intervals in which abundant magnetic inclusions dominate the magnetic signal are compared with other intervals to assess quantitatively their contribution to sedimentary RPI signals. The normalized remanence record from core MD01‐2421 does not correlate clearly with global RPI stacks, which we attribute to a demonstrated lower paleomagnetic recording efficiency of magnetic inclusions compared to other detrital magnetic minerals. We also carried out the first laboratory redeposition experiments under controlled Earth‐like magnetic fields for particles with magnetic inclusions using material from core MD01‐2421. Our results confirm that such particles can be aligned by ambient magnetic fields, but with a lower magnetic recording efficiency compared to other detrital magnetic minerals, which is consistent with normalized remanence data from core MD01‐2421. Our demonstration of the role of sedimentary magnetic inclusions should have wide applicability for understanding sedimentary paleomagnetic recording. 
PY 2019
PD JUN
SO Journal Of Geophysical Research-solid Earth
SN 2169-9313
PU American Geophysical Union (AGU)
VL 124
IS 7
UT 000481819500004
BP 6267
EP 6279
DI 10.1029/2018JB016859
ID 61685
ER

EF