Chocolate tablet aspects of tectonics of Meshkenet Tessera on Venus |
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| Authors: | J Raitala |
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| Institution: | (1) Department of Geosciences Astronomy, University of Oulu, Finland |
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| Abstract: | The intrablock deformation of Meshkenet Tessera on Venus is mostly due to responses of the uppermost surface bedrock to tensional stresses. It is found that complex deformation structures within the highland blocks resemble those of formed in chocolate tablet boudinaging which has taken place after original parallel faulting and bar-like crustal block formation. The high-angle tessera structures with varying cross-cutting relations define styles and locations of multiphase deformation most evidently related to local relaxation of tessera topography. Series of progressive or superposed fracturing events with alternating fault directions took place at high angles during this relaxational deformation. Compressional ridges often surround these tesserae. |
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| Keywords: | Planetary tectonics Venus |
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