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Correlation of lunar far-side magnetized regions with ringed impact basins
Authors:KA Anderson  DE Wilhelms
Institution:1. Physics Department, University of California, Berkeley, CA 94720 U.S.A.;2. Space Sciences Laboratory, University of California, Berkeley, CA 94720 U.S.A.
Abstract:By the method of electron reflection, we have identified seven well-defined magnetized regions in the equatorial belt of the lunar far side sampled by the Apollo 16 Particles and Fields subsatellite. Most of these surface magnetic fields lie within one basin radius from the rim of a ringed impact basin, where thick deposits of basin ejecta are observed or inferred. The strongest of the seven magnetic features is linear, at least 250 km long, and radial to the Freundlich-Sharonov basin. The apparent correlation with basin ejecta suggests some form of impact origin for the observed permanently magnetized regions.
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