Accession Number:

AD0677567

Title:

LAVA FLOWS IN MARE IMBRIUM,

Descriptive Note:

Corporate Author:

BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH GEO-ASTRO PHYSICS LAB

Personal Author(s):

Report Date:

1968-08-01

Pagination or Media Count:

43.0

Abstract:

A 130 km long flow in Mare Imbrium is described. It is argued that the flow is of basalt from a fissure eruption. The number density of craters smaller than about 200 m in diameter is essentially equal on and off the flow, but there are approximately twice as many craters larger than 200 m on the flow as there are in the adjacent, older unit. It is reasoned that the excess of craters on the flow is not due to secondary impact and that at least 50 of the larger craters on the flow are of endogenic origin. Of the endogenic craters, the majority have been produced basically by collapse, although other types of crater are also present. Author

Subject Categories:

  • Astrophysics
  • Geology, Geochemistry and Mineralogy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE