Paleomagnetic evidence supports a low-temperature origin of the carbonate in Martian meteorite ALH84001

Details Paleomagnetic evidence supports a low-temperature origin of the carbonate in Martian meteorite ALH84001 Paleomagnetic evidence supports a low-temperature origin of the carbonate in Martian meteorite ALH84001

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28..731k&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 731.

Physics

Paleomagnetism, Low Temperature Environments, Carbonates, Meteorites, Mars Atmosphere, Planetary Magnetic Fields, Demagnetization, Magnetic Moments

Scientific paper

After initial measurements of the natural remanent magnetization (NRM) of a sample of the ALH84001 meteorite, it was possible to separate the carbonate from the pyroxenite while maintaining accurate relative orientations. Both the carbonate layer and the pyroxenite ground mass possess a stable NRM, implying that Mars had a substantial magnetic field during the rock's foundation; analysis of the coercivity spectra places an upper limit of 150 C for the carbonate's formation temperature.

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