Paleomagnetism of the moon and meteorites

Details Paleomagnetism of the moon and meteorites Paleomagnetism of the moon and meteorites

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983rvgsp..21..676h&link_type=abstract

Reviews of Geophysics and Space Physics (ISSN 0034-6853), vol. 21, April 1983, p. 676-684.

Physics

Space Physics

10

Lunar Magnetic Fields, Magnetization, Meteorites, Paleomagnetism, Achondrites, Apollo Flights, Carbonaceous Chondrites, Ferromagnetic Materials, Remanence, Moon, Meteorites, Paleomagnetism, Magnetic Properties, Magnetization, Crust, Origin, Surface, History, Solar System, Parent Bodies, Data, C Chondrites, Classification, Ureilites, Achondrites, Saturation, Antarctic Meteorites, Remanent Magnetization, Comparisons, Orbiters, Samples, Meteorite, Samples, Lunar, Nrm, Srm, Models, Trm, Maps, Paleointensity, Ap

Scientific paper

Paleomagnetic investigations (1979-1982) of the nature of the magnetization process and the magnetizing fields which produced magnetization in lunar and meteoritic materials are surveyed. Natural remanence magnetization (NRM), as well as thermoremanence magnetization (TRM), have been measured in carbonaceous chondrites and and L-chondrites to characterize the formation processes occurring when the magnetization was induced. Chemical remanence magnetism, together with the NRM, has been examined in noncarbonaceous chondrites, and NRM intensity and locations have been probed in achondrites. The magnetism has been concluded to arise either from solar magnetic fields, solar nebula magnetic fields, dynamo magnetic fields in the meteorite parent bodies, or locally generated fields caused by processes such as impacts. Lunar samples with NRM have been dated to origins less than 3.6 b.y., and could have been caused by shocks, such as from impacts less than 3 m.y. ago. Discussions of TRM, dynamo, and possible transient magnetic fields from hypervelocity meteoroid impacts as origins of magnetism on the surface and in a lunar magnetic core are presented.

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