Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmgp33b..01g&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #GP33B-01
Physics
1595 Planetary Magnetism: All Frequencies And Wavelengths, 1599 General Or Miscellaneous
Scientific paper
We will present new results of simultaneous shock magnetization and shock demagnetization experiments performed on titanomagnetite-bearing basalt samples with a pulsed laser in controlled magnetic field. These new results provide the opportunity to discuss the main properties of the these two phenomena. What is the efficiency of the acquisition of shock remanent magnetization (SRM) acquisition with respect to thermoremanent magnetization? Is shock demagnetization equivalent to shock magnetization in zero field? Do we observe scattered SRM direction in shocked samples? Can we predict the shock demagnetization/remagnetization behavior of a rock knowing its rock magnetic properties? Eventually we will discuss the implications of these results for the understanding of the paleomagnetic signal of shocked rocks (meteorites in paticular) and of the magnetic anomalies above impact basins.
Berthe L.
Boustie Michel
de Resseguier Th.
Gattacceca Jérôme
Natalia B.
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