Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmgp32a0196k&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #GP32A-0196
Physics
1519 Magnetic Mineralogy And Petrology, 1540 Rock And Mineral Magnetism
Scientific paper
The origin of our solar system may have been accompanied by transient energetic events capable of magnetizing the materials from which the solid bodies in the solar system formed. The magnetic field associated with some of some of these events should have been recorded by the magnetic mineralogy contained within meteorites. To extract this information from meteorites many noise components must be carefully eliminated. The fusion crust has long been established as restricted to a thin layer on the surface of meteorite. Magnetic screening of the fusion crust that relates to Murchison meteorite indicates that during the entry and landing at least 6 mm thick layer is affected by terrestrial TRM acquisition. Many of the meteorite finds have long term residence in the terrestrial oxidized environment. This weathering is the subject of this study. The meteorite in question landed in the Libya stony desert and has obvious surface weathering that can be referred to as desert varnish. The consequent iron oxide mineralization introduced very stable origin of very stable chemical remanent magnetization. The magnetic remanence in fragments without the desert varnish is between 20 - 50 % of the oxidized ones. The orientation of this CRM appears to be random indicating that the sample may have rotated during the long period of aeolian transport and varnish formation. Magnetization of the white matrix samples (20 - 50 % of weathered ones) is thermally more stable and also randomly oriented. The range of NRM/SIRM values for both mineralogies varies between 10-2 and 10-3. Acknowledgements: This work would not be possible without help of following people: Jakub Haloda, Petr Jakes, Marcela Bukovanska, Petr Pruner, Vladimir Kohout, Libuse Kohoutova, Vladimir Kohout, Olga Kohoutova.
Kletetschka Gunther
Kohout Tomas
Wasilewski Peter
No associations
LandOfFree
Influence of Terrestrial Weathering on the Magnetic Record of a LL Chondrite does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Influence of Terrestrial Weathering on the Magnetic Record of a LL Chondrite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Influence of Terrestrial Weathering on the Magnetic Record of a LL Chondrite will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1240599