Palaeomagnetism and planetology

Details Palaeomagnetism and planetology Palaeomagnetism and planetology

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pepi...24..205r&link_type=abstract

Physics of the Earth and Planetary Interiors, vol. 24, Feb. 1981, p. 205-217.

Physics

1

Dynamo Theory, Lunar Core, Lunar Magnetic Fields, Lunar Rocks, Paleomagnetism, Planetology, Remanence, Lunar Crust, Magnetic Anomalies, Magnetic Dipoles, Magnetization, Planetary Evolution, Planetary Structure

Scientific paper

The discovery of remanent magnetism in lunar samples has led to much research into its origin. There is now considerable evidence that the magnetism was acquired in a lunar magnetic field of internal origin, existing between 4000 and 3200 million years ago. Investigations have been carried out into the intensity of the ancient lunar field and its variation with time in an attempt to provide evidence for the origin of the field in a dynamo process in a molten lunar core. In the absence of firm evidence for such a core from other sources, lunar palaeomagnetism may hold the key to this possible aspect of early lunar history. An early lunar core is of exceptional interest in ideas about lunar history and structure, and may indeed have implications for other bodies in the solar system.

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