The ancient lunar core dynamo

Details The ancient lunar core dynamo The ancient lunar core dynamo

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978sci...199..771r&link_type=abstract

Science, vol. 199, Feb. 17, 1978, p. 771-773.

Other

13

Dynamo Theory, Lunar Core, Lunar Evolution, Lunar Magnetic Fields, Paleomagnetism, Heat Sources, Iron, Lunar Composition, Planetary Structure, Moon, Origin, Magnetic Fields, Paleomagnetism, Iron, Thermal History, Remanent Magnetization, Core

Scientific paper

Lunar paleomagnetism provides evidence for the existence of an ancient lunar magnetic field generated in an iron core. Paleointensity experiments give a surface field of 1.3 gauss, 4.0 x 10 to the 9th years ago, subsequently decreasing exponentially. Thermodynamic arguments give a minimum value of the heat source in the core at that time: known sources, radioactive and other, are quantitatively implausible, and it is suggested that superheavy elements were present in the early moon.

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