author={Francis Nimmo},
  journal={Annual Review of Earth and Planetary Sciences},
  • F. Nimmo
  • Published 31 May 2005
  • Geology
  • Annual Review of Earth and Planetary Sciences
▪ Abstract The bulk of the ∼50-km-thick Martian crust formed at ∼4.5 Gyr B.P., perhaps from a magma ocean. This crust is probably a basaltic andesite or andesite and is enriched in incompatible and heat-producing elements. Later additions of denser basalt to the crust were volumetrically minor, but resurfaced significant portions of the Northern hemisphere. A significant fraction of the total thickness of the crust was magnetized prior to 4 Gyr B.P., with the magnetization later selectively… 

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