Ganymede bright terrain at very high resolution - Geologic structure and regolith processes

Details Ganymede bright terrain at very high resolution - Geologic structure and regolith processes Ganymede bright terrain at very high resolution - Geologic structure and regolith processes

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1611y&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 611.

Mathematics

Logic

3

Ganymede, Satellite Surfaces, Regolith, Structural Properties (Geology), Terrain Analysis, Satellite Imagery, High Resolution, Planetary Craters, Image Classification

Scientific paper

Bright terrain on Ganymede is characterized by sets ('sulci') of relatively high albedo parallel ridges and troughs hundreds of meters in vertical relief and 10s of km wide, commonly bounded on either side by large, deep throughgoing grooves. Based on Voyager data, the formation of bright terrain has been plausibly attributed to the emplacement of water ice volcanics, followed by tectonic extension. Recent data returned from the Galileo spacecraft have provided the basis for an updated interpretation of these results. In addition, the return by Galileo of very high (11 m/pxl) resolution images of a region of bright terrain has allowed the examination and analysis of features as small as boulders, yielding a very local perspective of bright terrain characteristics. Using these images, we have classified several geological units within this unnamed sulcus, and have analyzed the various degradation states of these units in terms of local-scale processes. In this way, a picture of local geological processes in Ganymede's bright terrain has begun to emerge.

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