Coupled Thermal-orbital Evolution of the Early Moon

Details Coupled Thermal-orbital Evolution of the Early Moon Coupled Thermal-orbital Evolution of the Early Moon

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dda....41.0804m&link_type=abstract

American Astronomical Society, DDA meeting #41, #8.04; Bulletin of the American Astronomical Society, Vol. 41, p.933

Astronomy and Astrophysics

Astronomy

Scientific paper

Coupled thermal-orbital histories of early lunar evolution are considered in a simple model. We consider a plagioclase lid, overlying a magma ocean, overlying a solid mantle. Tidal dissipation occurs in the plagioclase lid and heat transport is by conduction and melt migration. We find that large orbital eccentricities can be obtained in this model. We discuss possible consequences of this phase of large eccentricities for the shape of the Moon and geochronology of lunar samples. We find that the orbit can pass through the shape solution of Garrick-Bethell et al. (2006), but we argue that the shape cannot be maintained against elastic deformation as the orbit continues to evolve.

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