Titanomaghemite in magnetic soils on Earth and Mars

Conference · Thu Aug 30 04:00:00 EDT 1990 · Journal of Geophysical Research; (United States)

OSTI ID:5453219

Coey, J M.D. ^[1]; Morup, S; Madsen, M B ^[2]; Knudsen, J M ^[3]

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1. Trinity College, Dublin (Ireland)
2. Technical Univ. of Denmark, Lyngby (Denmark)
3. Orsted Institute, Copenhagen (Denmark)

Viking mission soil analyses and the constitution of the SNC group of meteorites have indicated that the Martian regolith is derived from basalt. On Earth such material often weathers to yield a highly magnetic soil (spontaneous magnetization {sigma}{sub s} {ge} 1 J T{sup {minus}1} kg{sup {minus}1}), the magnetic constituent of which is fully oxidized titanomaghemite. The authors propose that titanomaghemite is likewise responsible for the magnetism of the soils on Mars.

• OSTI ID: 5453219
• Report Number(s): CONF-9001119--
• Conference Information: Journal Name: Journal of Geophysical Research; (United States) Journal Volume: 95:B9
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BASALT
CHEMICAL COMPOSITION
EARTH PLANET
IGNEOUS ROCKS
MAGNETIC MATERIALS
MAGNETISM
MAGNETIZATION
MARS PLANET
MATERIALS
OVERBURDEN
PLANETS
ROCKS
SOILS
SPACE VEHICLES
VEHICLES
VIKING SPACE PROBES
VOLCANIC ROCKS
WEATHERING