Bullialdus - Strengthening the case for lunar plutons

Details Bullialdus - Strengthening the case for lunar plutons Bullialdus - Strengthening the case for lunar plutons

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.2129p&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, Nov. 1991, p. 2129-2132.

Mathematics

Logic

17

Lunar Composition, Lunar Craters, Lunar Crust, Lunar Evolution, Stratigraphy, Breccia, Gabbro, Lunar Rocks, Pyroxenes, Spectral Reflectance

Scientific paper

Although many craters expose materials of a composition different from that of the local surroundings, Bullialdus has excavated material representing three distinct stratigraphic zones that occur in the upper 6 km of crust, the top two of which are gabbroic and the deepest of which is noritic. This three-component stratigraphy at Bullialdus provides strong evidence that the lunar crust includes pockets of compositionally layered material reminiscent of mafic layered plutons. When combined with previous information on the compositional diversity at other large craters, these remote analyses obtained in a geologic context substantially strengthen the hypothesis suggested from lunar samples that plutons play an integral role in lunar crustal evolution.

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