Apollo 11 Drive-Tube Core Samples: An Initial Physical Analysis of Lunar Surface Sediment

Autor:	David R. Carrier, William R. Greenwood, Grant Heiken, Daniel G. Anderson, Roald Fryxell
Rok vydání:	1970
Předmět:	Lunar water Multidisciplinary Materials science Mineralogy Weathering Regolith Astrobiology
Zdroj:	Science. 167:734-737
ISSN:	1095-9203 0036-8075
DOI:	10.1126/science.167.3918.734
Popis:	Two drive-tube core samples were obtained at Tranquillity Base. Fines include much glass, are unweathered, medium gray, loose, nonstructured, very weakly coherent, and demonstrate both accumulation and mixing in a waterless vacuum environment. In contrast to chemical weathering characteristic on the earth, lunar alteration processes are primarily mechanical. We infer that environmental processes of the lunar surface may be expressed as follows: R (regolith) = f(cl, p, r, t, b, a, . . .), in which climate (cl) is constant and the time (t)-de-pendent processes of bombardment (b) and accumulation (a) assume significance unparalleled on the earth because of their effects on parent material (p) and relief (r).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ae18fc44701d089cad0c8ec5c854a7c https://doi.org/10.1126/science.167.3918.734 Zobrazit plný text záznamu