Physics – Geophysics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pggp.rept...95c&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1990 p 95-97 (SEE N92-10728 01-91)
Physics
Geophysics
Craters, Gravitation, Icy Satellites, Landforms, Mimas, Paleontology, Structural Properties (Geology), Tectonics, Enceladus, Grooves, Heating, Hyperion, Miranda, Planetary Evolution, Saturn (Planet), Solar System, Structural Analysis
Scientific paper
Mimas, the innermost of the major saturnian satellites, occupies an important place in comparative studies of icy satellites. It is the smallest icy satellite known to have a mostly spherical shape. Smaller icy objects like Hyperion and Puck are generally irregular in shape, while larger ones like Miranda and Enceladus are spherical. Thus Mimas is near the diameter where the combination of increasing surface gravity and internal heating begin to have a significant effect on global structure. The nature and extent of endogenic surface features provide important constraints on the interior structure and history of this transitional body. The major landforms on Mimas are impact craters. Mimas has one of the most heavily cratered surfaces in the solar system. The most prominent single feature on Mimas is Herschel, an unrelaxed complex crater 130 km in diameter. The only other recognized landforms on Mimas are tectonic grooves and lineaments. Groove locations were mapped by Schenk, but without analysis of groove structures or superposition relationships. Mimas' tectonic structures are remapped here in more detail than previously has been done, as part of a general study of tectonic features on icy satellites.
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