Limits on differentiation of melt sheets from basin-scale lunar impacts

Details Limits on differentiation of melt sheets from basin-scale lunar impacts Limits on differentiation of melt sheets from basin-scale lunar impacts

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24.1481w&link_type=abstract

In Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z p 1481-1482 (SEE N94-20636 05-91

Mathematics

1

Cratering, Impact Melts, Lunar Crust, Lunar Geology, Moon, Porosity

Scientific paper

In the literature on cratering, one frequently finds allusions to the 'sheet' of impact melt that supposedly forms in the aftermath of any large impact. The presumption seems to be that either (1) most of the impact melt is formed virtually at the surface, or else (2) most of the melt inevitably collects into a near-surface, roughly sill-shaped 'sheet,' soon after the impact. However, in basin-scale impacts on the mature Moon, neither of these scenarios appears likely. Differentiation of impact melts on the Moon is hampered by similarity in density vs. the porous lunar crust, and by the adverse melt/'displaced' matter ratio that results from the lunar g.

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