Physics
Scientific paper
Apr 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975e%26psl..25..331h&link_type=abstract
Earth and Planetary Science Letters, vol. 25, no. 3, Apr. 1975, p. 331-337. Research supported by the University of Minnesota a
Physics
5
Basalt, Demagnetization, Lunar Rocks, Magnetic Properties, Olivine, Paleomagnetism, Decay Rates, Magnetic Moments, Magnetization, Minerals
Scientific paper
A lunar olivine basalt sample is analyzed which exhibits unorthodox alternating field (AF) demagnetization behavior characterized by nonreproducible remanent magnetization values upon demagnetization at a given peak AF. It is shown that the direction of the remanence following AF demagnetization is roughly confined to a particular plane and that this behavior is an intrinsic property of certain magnetic carriers present in the sample. The viscous acquisition coefficient is found to be about 1-1/2 times greater than the absolute value of the decay coefficient. It is suggested that the behavior of this sample is due to the presence of a few planar, multidomain grains which represent a local mineral fabric, do not demagnetize, and may interfere with the determination of a meaningful time variation of lunar magnetic paleointensity.
Banerjee Sanjay K.
Hoffman Kenneth A.
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