Early Lunar Magnetism

@article{GarrickBethell2009EarlyLM,
  title={Early Lunar Magnetism},
  author={I. Garrick-Bethell and B. Weiss and D. Shuster and J. Buz},
  journal={Science},
  year={2009},
  volume={323},
  pages={356 - 359}
}
It is uncertain whether the Moon ever formed a metallic core or generated a core dynamo. The lunar crust and returned samples are magnetized, but the source of this magnetization could be meteoroid impacts rather than a dynamo. Here, we report magnetic measurements and 40Ar/39Ar thermochronological calculations for the oldest known unshocked lunar rock, troctolite 76535. These data imply that there was a long-lived field on the Moon of at least 1 microtesla ∼4.2 billion years ago. The early age… Expand

Topics from this paper

Magnetism of a very young lunar glass
Moonstruck Magnetism
Persistence and origin of the lunar core dynamo
The end of the lunar dynamo
Decline of the lunar core dynamo
A Long-Lived Lunar Core Dynamo
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