Magnetic enhancement on the surface of Mars?

Details Magnetic enhancement on the surface of Mars? Magnetic enhancement on the surface of Mars?

Jan 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jgr...105.1819h&link_type=abstract

Journal of Geophysical Research, Volume 105, Issue E1, p. 1819-1828

Physics

14

Geomagnetism And Paleomagnetism: Rock And Mineral Magnetism, Planetology: Solid Surface Planets: Magnetic Fields And Magnetism, Planetology: Solid Surface Planets: Surface Materials And Properties, Planetology: Solar System Objects: Mars

Scientific paper

The magnetic properties experiments on the Viking missions and the Pathfinder mission indicate that the Martian soil and airborne dust are somewhat magnetic (average saturation magnetization, σS~4Am2kg-1). While hematite, superparamagnetic or macro-crystalline, is not sufficiently magnetic to yield the results obtained, pyrogenetic titaniferous magnetite (TiMt) might conceivably be the cause. However, the σS of the dust is considerably higher than that in any of the known Martian meteorites, some of which may be representative of the bedrock from which the Mars soil formed. Furthermore if the reported TiO2 content of Mars soil (~1% by weight) was entirely present as TiMt of composition Usp 60 (that typical of terrestrial ocean floor basalts), the calculated abundance (<4%) would yield σS of only 1.2 A m2 kg-1. As the Pathfinder magnetic properties experiment results pertain only to the airborne dust particles on Mars, the likelihood of aeolian concentration of such TiMt grains is minimal. Ferrous iron in the bedrock silicates must have been converted to maghemite (γ-Fe2O3) by some unknown oxidative mechanism; this ``magnetic enhancement'' should be incorporated in any process envisioned for the origin of Martian soil.

Affiliated with

Also associated with

No associations

Rating

Magnetic enhancement on the surface of Mars? 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 Magnetic enhancement on the surface of Mars?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic enhancement on the surface of Mars? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-807648