Mathematics – Logic
Scientific paper
Jan 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7617002y&link_type=abstract
Final Report State Univ. of New York, Geneseo. Dept. of Geological Sciences.
Mathematics
Logic
Apollo Spacecraft, Lunar Craters, Lunar Geology, Lunar Maria, Spaceborne Photography, Lunar Maps, Lunar Photographs, Lunar Topography, Tectonics, Volcanoes
Scientific paper
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.
Brennan William J.
Young Albert Raymond
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