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Geologic Map of the Meskhent Tessera Quadrangle (V-3), Venus: Evidence for Early Formation and Preservation of Regional TopographyThe area of the Meskhent Tessera quadrangle (V-3, 50-75degN, 60-120degE, Fig. 1) corresponds to a transition zone from the uplands of Ishtar Terra to the west to the lowlands of Atalanta Planitia to the east. The topographic configuration, gravity signature, and presence of large tesserae in Ishtar Terra are consistent with extensive areas of thickened crust and tectonically stabilized lithosphere representing ancient and now extinct regimes of mantle convection. The gravity and topographic characteristics of Atalanta Planitia have been cited as evidence for large-scale mantle downwelling. Thus, the region of Meskhent Tessera quadrangle represents an important sample for the study of the regional history of long-wavelength topography (highlands, midlands, and lowlands), interaction between the downwelling and areas of thickened crust/lithosphere, formation of associated tectonic features, and emplacement of volcanic plains.
Document ID
20080041009
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Ivanov, M. A. (Academy of Sciences (Russia) Moscow, Russian Federation)
Head, James W. (Brown Univ. Providence, RI, United States)
Date Acquired
August 24, 2013
Publication Date
June 23, 2008
Publication Information
Publication: Abstracts of the Annual Meeting of Planetary Geologic Mappers, Flagstaff, AZ, 2008
Subject Category
Geophysics
Distribution Limits
Public
Copyright
Public Use Permitted.

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IDRelationTitle20080040988Collected WorksAbstracts of the Annual Meeting of Planetary Geologic Mappers, Flagstaff, AZ, 2008
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