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Eastern Aphrodite Terra on Venus - Characteristics, structure, and mode of originAltimetric and radar-image cross-strike discontinuities (CSDs) are found to cut across the nearly east-west strike of Eastern Aphrodite (EA) Terra, dividing or segmenting it into offset domains. Each of these domains is characterized by a discontinuous central chasma or trough. These features have been mapped in the altimetric and radar image data of EA on the basis of abrupt termination of riftlike central chasma, offset, and segmentation of the center highlands, and radar image discontinuities previously mapped in Western Aphrodite in terms of length, orientation, and influence on the central highlands and adjacent lowlands. It is concluded that EA displays a variety of geological and geophysical characteristics similar to those occuring at divergent boundaries. The surface map characteristics are the result of a great horizontal motion of the crust diverging from a well-defined linear region, a process that can occur whether the surface is part of a thick and strong plate detached from mantle convection or part of a thin and weak layer attached to a deep convective limb.
Document ID
19910038990
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Crumpler, L. S.
(Brown University Providence, RI, United States)
Date Acquired
August 15, 2013
Publication Date
December 1, 1990
Publication Information
Publication: Earth, Moon, and Planets
Volume: 50-51
ISSN: 0167-9295
Subject Category
Lunar And Planetary Exploration
Accession Number
91A23613
Funding Number(s)
CONTRACT_GRANT: NGR-40-002-116
CONTRACT_GRANT: NAGW-713
Distribution Limits
Public
Copyright
Other

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