David Morrison

University of California, Berkeley, Berkeley, California, United States

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Publications (6)67.22 Total impact

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    ABSTRACT: The Voyager encounters have added the satellites of Saturn to those planetary bodies for which geological studies are possible. These satellites are surprisingly heterogeneous, in spite of their apparently common composition of more than half water ice. All are more or less heavily cratered, but most also show clear evidence of substantial endogenic modification and resurfacing during the first few hundred million years of their existence. In the case of Enceladus, this internal activity has been most dramatic and may have persisted into the past billion years of solar-system history. Iapetus also remains a major mystery with its still unexplained hemispheric dichotomy, for which both external and internal causes have been suggested. The current knowledge of the satellites is reviewed from a geologic perspective, using primarily Voyager imaging data. Emphasis is placed on the six larger bodies (except Titan): Rhea, Iapetus, Dione, Tethys, Enceladus, and Mimas.

Publication Stats

653 Citations
67.22 Total Impact Points

Top Journals


  • 1991
    • University of California, Berkeley
      Berkeley, California, United States