Mathematics – Logic
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmgp41b0831y&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #GP41B-0831
Mathematics
Logic
[1521] Geomagnetism And Paleomagnetism / Paleointensity, [1595] Geomagnetism And Paleomagnetism / Planetary Magnetism: All Frequencies And Wavelengths
Scientific paper
Magnetic and mineralogic investigation of Chondrites is useful to decipher the early evolution of the solar system and the formation of planetary objects. The natural remanent magnetization (NRM) of LL6 St. Severin chondrite is extremely stable against the nominal demagnetization. A suite of rock magnetic tests, low-temperature saturation isothermal remanence cycling, microscopic observations, and electron microprobe analyses suggested that NRM of St. Severin is carried by fine-grained Kamacite. Considering its low degree of shock-induced effects, St. Severin may faithfully record the ancient planetary magnetic field. The IZZI paleointensity determination was carried out on several chips of St. Severin. Two specimens yielded successful paleointensity without showing signs of any alteration. Estimated magnetic field intensity from the St. Severin is within an order of magnitude of that of the present-day Earth.
Doh S.
Min Kyoung
Yu Yue
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