Apollo 16 site geology and impact melts - Implications for the geologic history of the lunar highlands

Details Apollo 16 site geology and impact melts - Implications for the geologic history of the lunar highlands Apollo 16 site geology and impact melts - Implications for the geologic history of the lunar highlands

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984lpsc...15...95s&link_type=abstract

(Lunar and Planetary Institute, NASA, American Geophysical Union, et al., Lunar and Planetary Science Conference, 15th, Houston,

Mathematics

Logic

18

Apollo 16 Flight, Geochemistry, Highlands, Impact Melts, Landing Sites, Lunar Geology, Gabbro, Lunar Composition, Lunar Craters, Lunar Rocks, Volcanoes, Moon, Samples, Lunar, Apollo 16, Landing Sites, Geology, Impacts, Melts, History, Highlands, Descartes, Cayley, Source, Formation, Composition, Crust, Mineralogy, Craters, Ejecta, Chemistry, Potassium, Basalts, Nectaris Mare, Volume, Mixing, Age, Thickness

Scientific paper

The geology of the Apollo 16 site is reconsidered on the basis of data from photogeology, geochemical remote sensing, and lunar samples. The site possesses an upper surface of anorthositic gabbro and related rocks. Mafic components were deposited as basin ejecta. The events involved in its geological evolution were the Nectaris impact and the Imbrium impact. The role of large, local craters in the history of the region was to serve as topographic depressions to accumulate basin ejecta. The most abundant melt composition at Apollo 16 is an aluminous variety of LKFM basalt supplied by the Nectaris impact as ejected basin impact melt. The mafic LKFM melt may have been supplied by the Imbrium impact. More aluminous melt groups are probably derived from local, small craters. The remainder of the deposits in the region are composed of anorthositic clastic debris derived from the Nectaris basin, the local crustal substrate, and Imbrium and other basins.

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