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New maps of Lakshmi Planum and eastern Aphrodite, VenusInterest on Venus has centered on three regions; (1) Aphrodite Terra, especially east of the main uplant portion, (2) Ishtar Terra, especially Lakshmi Planum and its bounding scarp and massifs, and (3) Beta Regio-Phoebe Regio. The last region is topographically similar to the East African rift system, and has been inferred to have a similar tectonic origin. The Aphrodite region is part of a 21,000 km long tectonic zone that seems best explained as due to extension, and that may represent hot spots clustered along an incipient divergent plate boundary. The most interesting and complex portion of this tectonic zone is that part of eastern Aphrodite between Thetis Regio and Atla Regio. In contrast, the Lakshmi Planum region has many topographic characteristics suggesting that it is a true continent, and thus indicative of convergence and a thick crust. Detailed topographic contour maps of eastern Aphrodite Terra and of Lakshmi Planum are included.
Document ID
19840015389
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Mcgill, G. E.
(Massachusetts Univ. Amherst, MA, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: NASA. Washington Repts. of Planetary Geol. Program
Subject Category
Lunar And Planetary Exploration
Accession Number
84N23457
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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