Disequilibration by Planetary Collision

Details Disequilibration by Planetary Collision Disequilibration by Planetary Collision

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p31e..01a&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #P31E-01

Physics

[5455] Planetary Sciences: Solid Surface Planets / Origin And Evolution, [6299] Planetary Sciences: Solar System Objects / General Or Miscellaneous

Scientific paper

Molten planets equilibrate gravitationally, chemically, and thermally. Large scale collisions (a.k.a. giant impacts, similar-sized collisions) can upset the apple cart by bringing core material, late in the game, into mixture with mantle products, and by shredding stratified planets into strands of mantle and clumps of core (c.g. Asphaug et al. Nature 2006). Atmophiles and volatiles come along for the ride, and can find themselves in disequilibrium mixtures not anticipated by one-dimensional models of planetary evolution, or by planet growth models in which planets stick, merge, and mix perfectly in the aftermath of a collision. We present very high resolution case studies of such collisions.

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