Magnetic properties of Martian olivine basalts studied by terrestrial analogues

Details Magnetic properties of Martian olivine basalts studied by terrestrial analogues Magnetic properties of Martian olivine basalts studied by terrestrial analogues

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hyint.166..561r&link_type=abstract

Hyperfine Interactions, Volume 166, Issue 1-4, pp. 561-566

Computer Science

7

Mars, Olivine Basalt, M&Ouml, Ssbauer Spectroscopy, Magnetic Anomalies

Scientific paper

Here we present a comparison study of terrestrial olivine basalt and relatively un-weathered basalt studied by the Mars Exploration Rover Spirit on Mars. The Mössbauer spectra of terrestrial olivine basalt exhibit some characteristics that can also be seen in the Mars spectra. The results from Mössbauer spectroscopy on Mars indicate that the olivine in the rocks has undergone alteration at high temperatures (600 1,000°C), a process known to give rise to anomalously magnetic rocks on Earth. This suggests that if the rocks at Gusev crater had solidified in an external magnetic field of terrestrial magnitude, these would have become highly magnetic enough to explain the presence of magnetic anomalies on Mars.

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