Mathematics – Logic
Scientific paper
Sep 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mmkyo..35...59m&link_type=abstract
Kyoto University, Faculty of Science, Memoirs, Series - Physics, Astrophysics, Geophysics and Chemistry, vol. 35, Sept. 1977, p.
Mathematics
Logic
Geological Faults, Geomorphology, Lunar Maria, Selenology, Tectonics, Convection, Lunar Craters, Lunar Mantle, Lunar Rays, Lunar Surface, Petrology, Silicides
Scientific paper
Convection processes are proposed for the formation of some lunar features - the Central Meridianal Horst, the Frigorium Fault, the Cichus Fault, and the Circum Imbrian Tectronics. The proposed mechanism involves the drift of silicic mass blocks due to mantle convections that correspond to the spherical harmonics of the first order and second order along with other local convections. Stages examined include the rise of the Central Meridianal Bulge as a result of first order convection, the appearance of the Central Meridianal Horst between two local convections, and the resultant drift of a zone (between 30 N and 30 S) in the Central Meridianal Horst. The asymmetry of the Mare Imbrium and the fire lines of the ray craters are discussed with reference to the hypothesis that silicic mass blocks drifted because of convection.
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