Physics
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...83..216s&link_type=abstract
Icarus (ISSN 0019-1035), vol. 83, Jan. 1990, p. 216-243.
Physics
70
Planetary Evolution, Radar Imagery, Venus Surface, Volcanoes, Coronas, Morphology, Planetary Geology, Venera Satellites, Venus, Venera Missions, Spacecraft Observations, Surface, Mnemosyne Regio, Features, Morphology, Origin, Formation, Coronas, Radar Methods, Ridges, Earth-Based Observations, Structure, Topography, Models, Hotspots, Maps, Relaxation, Evolution, Volcanism, Tectonics, Gravity Effects, Procedure, Otau Corona, Pomona Corona, Coatline Corona, Feronia Corona, Diagrams, Anahit Corona, Rananeida C
Scientific paper
The Mnemosine Regio area of Venus contains seven of the circular-to-elliptical structures, characterized by an annulus of concentric ridges, that are known as 'coronae'. Several corona-origin models are presently considered, and it is found that the processes associated with diapirism or hot-spots, and the gravitational relaxation of high topography, are most consistent with the topography and morphology of these coronae. The sequence of the formation and evolution of the coronae proceeds from regional volcanic and tectonic activity, through localized uplift and volcanism, to annulus and trough formation related to gravitational relaxation, and finally local volcanic flooding of the corona, annulus, and trough.
Head James W.
Stofan Ellen R.
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