Mathematics – Logic
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987sci...238.1380h&link_type=abstract
Science (ISSN 0036-8075), vol. 238, Dec. 4, 1987, p. 1380-1385. Research supported by the William F. Marlar Memorial Foundation.
Mathematics
Logic
90
Venus, Surface, Topography, Morphology, Aphrodite Terra, Features, Fractures, Boundaries, Terrain, Patterns, Crust, Motion, Spreading, Maps, Diagrams, Symmetry, Comparisons
Scientific paper
Detailed examination of the topography and morphology of western Aphrodite Terra reveals numerous features that are similar to terrestrial divergent plate-boundary characteristics. Individual domains between fracture-zone-like discontinuities contain a variety of bilaterally symmetrical topographic elements that suggest that topographic features have been created at rise crests, rifted and separated, and moved laterally to their present symmetrical positions. The topographic and morphologic similarities, together with strikingly similar mirror-image map patterns on both sides of the rise axis, suggest that western Aphrodite Terra shares the characteristics of oceanic divergent plate boundaries, and is the site of crustal spreading on Venus. Topographic profiles are consistent with spreading rates of the order of several centimeters per year.
Crumpler Larry S.
Head James W.
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