Computer Science
Scientific paper
Jun 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987em%26p...38..183s&link_type=abstract
Earth, Moon, and Planets (ISSN 0167-9295), vol. 38, June 1987, p. 183-207. Research supported by the William F. Marlar Foundatio
Computer Science
13
Lithosphere, Planetary Evolution, Planetary Geology, Venus Surface, Cratering, High Resolution, Radar Imagery, Tectonics, Topography, Volcanoes
Scientific paper
High-resolution high-incidence-angle Arecibo images and Pioneer-Venus data of Southern Ishtar Terra and the flanking plains of Guinevere and Sena on Venus are analyzed. The low predominantly volcanic plains of Guinevere and Sedna Planitae are the oldest of the mapped terrains. The complex tectonic deformation in the Southern Ishtar Transition Zone postdates much of the low plains, and delineates the steep-sloped flanks of Ishtar Terra. Lakshmi Planum is found to have a distinctive volcanic style, and to postdate the Southern Ishtar Transition Zone, at least in part. Data show relatively recent plains-style volcanism to have occurred locally in Sedna Planitae, and to embay the Southern Istar Transition Zone. Arecibo data show additional coronae in the lowlands, suggesting that corona formation may be a more widespread process than indicated by Venera 15/16 images.
Campbell Don B.
Head James W.
Stofan Ellen R.
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