Coronae of Mnemosyne Regio - Morphology and origin

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Icarus (International Journal of the Solar System); (USA)

DOI:https://doi.org/10.1016/0019-1035(90)90016-3· OSTI ID:6955810

Stofan, E R; Head, J W ^[1]

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1. Brown Univ., Providence, RI (USA)

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. 50 refs.

• OSTI ID: 6955810
• Journal Information: Icarus (International Journal of the Solar System); (USA), Journal Name: Icarus (International Journal of the Solar System); (USA) Vol. 83; ISSN ICRSA; ISSN 0019-1035
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GEOLOGY
MEASURING INSTRUMENTS
MORPHOLOGY
PLANETARY EVOLUTION
PLANETS
RADAR
RANGE FINDERS
SOLAR SYSTEM EVOLUTION
SPACE VEHICLES
SURFACES
TECTONICS
VEHICLES
VENERA SPACE PROBES
VENUS PLANET
VOLCANOES