Identification of the shock effects in the the Avanhandava H4 Chondrules Based on the coercivity spectra of the remanent magnetization

0088193 - GLÚ 2008 US eng A - Abstrakt
Kohout, Tomáš - Kletetschka, Günther - Pesonen, L. J.
Identification of the shock effects in the the Avanhandava H4 Chondrules Based on the coercivity spectra of the remanent magnetization.
[Identifikace šoku v chondrulích meteoritu Avanhandava H4 na základě analýzy spektra koercivit remanentní magnetizace.]
Lunar and Planetary Science XXXVIII papers presented at the Thirty-eighth Lunar and Planetary Science Conference : March 12-16, 2007. League City: Lunar and Planetary Institute, 2007 - (Mackwell, S.). 1773.pdf-1773.pdf
[Lunar and Planetary Science /38./. 12.03.2007-16.03.2007, League City]
Výzkumný záměr: CEZ:AV0Z30130516
Klíčová slova: chondrule * impact process * magnetism
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

The extraterrestrial material can carry remanent magnetization of the space origin. The magnetized space material can be later exposed to various shock events (impacts, collisions, Hayabusa type sampling procedure) which can have significant demagnetization effect. The REM (AF) method was applied on chon-drules from Avanhandava H4 meteorite. The general trend of the REM (AF) curve obtained from shock experiments is similar to that the REM (AF) curve constructed from NRM of the Avanhandava chondrules giving the evidence for the shock history of the Avanhandava material. The method can be used for identi-fication of the shock history of space materials (chon-drules, meteorites, sample returns) after careful exclu-sion of the meteorites containing superparamagnetic component. Both natural (impacts, collisions) and arti-ficial (Hayabusa type sampling procedure) shock events can be identified.
Trvalý link: http://hdl.handle.net/11104/0149807