Computer Science
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992lpico.789...34g&link_type=abstract
In Lunar and Planetary Inst., Papers Presented to the International Colloquium on Venus p 34-36 (SEE N93-14288 04-91)
Computer Science
Escarpments, Planetary Geology, Radar Imagery, Structural Properties (Geology), Synthetic Aperture Radar, Tectonics, Terrain, Venus (Planet), Venus Surface, Deformation, Stratigraphy
Scientific paper
Tesserae are regions of elevated terrain characterized by two or more sets of ridges and grooves that intersect orthogonally. Tesserae comprise 15-20 percent of the surface of Venus, but the nature of their formation and evolution is not well understood; processes proposed to account for their characteristics are many and varied. Two types of tessera boundaries have been described: type 1 are generally embayed by plains; and type 2 boundaries are characterized by being linear at the 100-km scale and often associated with steep scarps or tectonic features. Margins such as the western edge of Alpha have been described as type 2. Some of the tessera have boundaries that display deformation of both the edge of the tessera and the adjoining plains. This study focuses on the western edge of Alpha Regio in an effort to characterize on occurrence of this type of boundary and assess the implications of the style in general. Using Magellan SAR imagery, lineament lengths, orientations, and spacing were measured for ten 50 x 60 km areas spanning 500 km of the western boundary. Structural characteristics and orientations were compared to stratigraphic units in order to assess the sequence and style of deformation.
Gilmore Martha S.
Head James W. III
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