Accession Number : AD0775086

Title :   Origin of Surface Features of the Moon,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Orowan,E.

Report Date : JUN 1973

Pagination or Media Count : 60

Abstract : The usual lava-pool hypothesis of lunar tectonics seem incompatible with numerous features of the lunar surface, in addition to leaving other features unexplained. The lunar-body hypothesis, on the other hand, does not encounter similar difficulties and it provides simple explanations for many hitherto puzzling characteristics of the lunar surface. A simple calculation combining the Hertz theory of elastic contact with the Griffith biaxial theory of fracture explains the flatness of the crater floor, and the terraced wall; the polygonal shape of the identation craters and the tangential rays around them are inertia effects due to the near-sonic velocity of crack propagation. (Modified author abstract)

Descriptors :   *Moon, *Structural geology, Lunar topography

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE