The geomorphology of RHEA - Implications for geologic history and surface processes

Details The geomorphology of RHEA - Implications for geologic history and surface processes The geomorphology of RHEA - Implications for geologic history and surface processes

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985lpsc...15..785m&link_type=abstract

(Lunar and Planetary Institute, NASA, American Geophysical Union, et al., Lunar and Planetary Science Conference, 15th, Houston,

Astronomy and Astrophysics

Astronomy

10

Cratering, Geomorphology, Rhea (Astronomy), Satellite Surfaces, Stratigraphy, Astronomical Photography, Tectonics, Saturn, Satellites, Rhea, Geomorphology, Geology, History, Surface, Features, Terrain, Craters, Stratigraphy, Comparisons, Formation, Basins, Ringed Features, Resurfacing, Central Peaks, Diameter, Lineaments, Evolution, Ages, Erosion, Description, Observations

Scientific paper

Morphological analyses of landforms on Rhea are used to define three physiographic provinces: cratered terrain 1 undifferentiated; cratered terrain 1 lineated; and cratered terrain 2. The important statigraphic relationships between the different provinces are examined with respect to major impact basins and tectonic features. It is shown that the formation of multiringed basins may have caused, or at least controlled the locations of major resurfacing and mantling events. The diameters of the central peaks relative to the impact crater diameters are found to be significantly larger than those within the craters of the moon or Mercury. Both cratered and noncrater lineaments have regional orientations which do not fit current global or regional stress models. On the basis of the morphological analysis, a chronological order is established for the origin of the three provinces: the cratered terrain 1 province was formed first; and cratered terrain 1 lineated and cratered terrain 2 were formed second, and last, respectively. It is shown that the chronological order is generally consistent with current theoretical models of the evolution of Rhea.

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