The ancient lunar crust, Apollo 17 region

Details The ancient lunar crust, Apollo 17 region The ancient lunar crust, Apollo 17 region

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ga17.conf...17j&link_type=abstract

In Lunar Science Inst., Workshop on Geology of the Apollo 17 Landing Site p 17-20 (SEE N93-18786 06-91)

Computer Science

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Highlands, Impact Melts, Lunar Crust, Lunar Maria, Lunar Rocks, Magma, Recrystallization, Regolith, Apollo 17 Flight, Basalt, Breccia, Felsite, Igneous Rocks, Kreep, Landing Sites

Scientific paper

The Apollo 17 highland collection is dominated by fragment-laden melt rocks, generally thought to represent impact melt from the Serenitatis basin-forming impact. Fortunately for our understanding of the lunar crust, the melt rocks contain unmelted clasts of preexisting rocks. Similar ancient rocks are also found in the regolith; most are probably clasts eroded out of melt rocks. The ancient rocks can be divided into groups by age, composition, and history. Oldest are plutonic igneous rocks, representing the magmatic components of the ancient crust. The younger are granulitic breccias, which are thoroughly recrystallized rocks of diverse parentages. The youngest are KREEPy basalts and felsites, products of relatively evolved magmas. Some characteristics of each group are given.

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