NDLI: Selected aspects of lunar mare geology from apollo orbital photography. [of lunar craters

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Selected aspects of lunar mare geology from apollo orbital photography. [of lunar craters

Content Provider	NASA Technical Reports Server (NTRS)
Author	Young, R. A. Brennan, W. J.
Copyright Year	1976
Description	Crater size-frequency distributions were studied (100-500 m) and are shown to provide significant integrated information concerning mare surface ages, subsurface stratigraphy, and surficial geology. Equilibrium cratering is discussed gradually reducing the relative numbers of craters smaller than 300-400 m in diameter as surfaces age and regolith thickens. Results for surface ages are in good agreement with other published crater ages. The existing correlations of large ring structures among various circular mare basins are shown to be based on criteria that are inconsistent and nonstandardized. A means of comparing equivalent ring structures in the different maria is proposed which takes into account the important characteristics of young unflooded basins (Orientale) as well as the progressive development of tectonic and volcanic features within the older flooded maria. Specific geologic aspects of several of the lunar maria are discussed and especially Mare Smythii, because of its great age and significantly different surface morphology. Lunar photographs and maps are shown.
File Size	14774758
Page Count	178
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19760009914
Archival Resource Key	ark:/13960/t6wx25m6m
Language	English
Publisher Date	1976-01-01
Access Restriction	Open
Subject Keyword	Lunar And Planetary Exploration Lunar Maps Lunar Maria Lunar Geology Lunar Topography Lunar Craters Lunar Photographs Volcanoes Tectonics Spaceborne Photography Apollo Spacecraft Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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