Stratigraphy of the Descartes region /Apollo 16/ - Implications for the origin of samples

Details Stratigraphy of the Descartes region /Apollo 16/ - Implications for the origin of samples Stratigraphy of the Descartes region /Apollo 16/ - Implications for the origin of samples

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974moon...11...77h&link_type=abstract

The Moon, vol. 11, Sept.-Oct. 1974, p. 77-99.

Computer Science

15

Apollo 16 Flight, Lunar Landing Sites, Lunar Rocks, Lunar Topography, Stratigraphy, Terrain Analysis, Breccia, Lunar Craters, Lunar Evolution, Lunar Photographs, Meteoritic Damage, Petrography

Scientific paper

Analysis of terrain in the Apollo 16 Descartes landing region shows a series of features that form a stratigraphic sequence which dominates the history and petrogenesis at the site. An ancient 150-km diam crater centered on the Apollo 16 site is one of the earliest recognizable major structures. Nectaris ejecta was concentrated in a regional low at the base of the back slope of the Nectaris basin to form the Descartes Mountains. Subsequently, a 60-km diam crater formed in the Descartes Mountains centered about 25 km to the west of the site. This crater dominates the geology and petrogenetic history of the site. Stone and Smoky Mountains represent the degraded terraced crater walls, and the dark matrix breccias and metaclastic rocks derived from North and South Ray craters represent floor fallback breccias from this cratering event. The interpretation is developed that the stratigraphy of the Cayley and Descartes, and thus the historical record of the Apollo 16 region, documents the complex interaction of deposits and morphology of local and regional impact cratering events. Large local 60- to 150-km diam craters have had a dramatic and previously unrecognized effect on the history and petrology of the Apollo 16 site.

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