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Atla Regio, Venus: Geology and origin of a major equatorial volcanic riseRegional volcanic rises form a major part of the highlands in the equatorial region of Venus. These broad domical uplands, 1000 to 3000 km across, contain centers of volcanism forming large edifices and are associated with extension and rifting. Two classes of rises are observed: (1) those that are dominated by tectonism, acting as major centers for converging rifts such as Beta Regio and Alta Regio, and are termed tectonic junctions; and (2) those forming uplands characterized primarily by large-scale volcanism forming edifices. Western Eistla Regio and Bell Regio, where zones of extension and rifting are less developed. Within this second class of features the edifices are typically found at the end of a single rift, or are associated with a linear belt of deformation. We examine the geologic characteristics of the tectonic junction at Alta Regio, concentrating on documenting the styles of volcanism and assessing mechanisms for the formation of regional topography.
Document ID
19930005186
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Senske, D. A.
(Brown Univ. Providence, RI, United States)
Head, James W., III
(Brown Univ. Providence, RI, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Lunar and Planetary Inst., Papers Presented to the International Colloquium on Venus
Subject Category
Lunar And Planetary Exploration
Accession Number
93N14374
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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