Tectonics and Volcanism of Eastern Aphrodite Terra, Venus: No Subduction, No Spreading

Eastern Aphrodite Terra, a deformed region with high topographic relief on Venus, has been interpreted as analogous to a terrestrial extensional or convergent plate boundary. However, analysis of geological and structural relations indicates that the tectonics of eastern Aphrodite Terra is dominated...

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Published inScience (American Association for the Advancement of Science) Vol. 260; no. 5107; pp. 526 - 530
Main Authors Hansen, Vicki L., Phillips, Roger J.
Format Journal Article
LanguageEnglish
Published Legacy CDMS American Society for the Advancement of Science 23.04.1993
American Association for the Advancement of Science
Subjects
Crustal fractures
Geology
Lava flows
Lunar And Planetary Exploration
Magma
Natural history
Planets
Plate tectonics
Ridges
Subduction
Subduction zones
Tectonic plate interactions
Tectonics
Venus (Planet)
Volcanism
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Summary:Eastern Aphrodite Terra, a deformed region with high topographic relief on Venus, has been interpreted as analogous to a terrestrial extensional or convergent plate boundary. However, analysis of geological and structural relations indicates that the tectonics of eastern Aphrodite Terra is dominated by blistering of the crust by magma diapirs. The findings imply that, within this region, vertical tectonism dominates over horizontal tectonism and, consequently, that this region is neither a divergent nor a convergent plate boundary.
Bibliography:CDMS
Legacy CDMS
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SourceType-Scholarly Journals-1
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ISSN:0036-8075
1095-9203
DOI:10.1126/science.260.5107.526