LAVA FLOWS IN MARE IMBRIUM,

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)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1968
Accession Number
AD0677567

Entities

People

  • G. Fielder
  • J. Fielder

Organizations

  • Boeing

Tags

DTIC Thesaurus Topics

  • Collapse
  • Diameters
  • Failure (Mechanics)
  • Geometry
  • Mathematics
  • Mechanical Phenomena

Fields of Study

  • Geology

Readers

  • Fluid Dynamics.
  • Geotechnical Engineering.
  • Team-Based Human-Centered Cognitive Task Decision Making and Information Performance.