Mapping graben-fissure systems in the Mead quadrangle, Venus

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  • Graben–fissure systems can have radiating, linear or arcuate/circumferential geometry and are generally interpreted as the surface expressions of underlying dyke swarms on Venus. Coronae on Venus are large, circular surface features and form in response to magmatic loading of the crust over zones of partial melting at the tops of mantle plumes that impinge on the base of the thermal lithosphere. This project has mapped 32 different graben-fissure systems in the study area (10°-20° N, 30° -50° E) within the Mead Quadrangle: 24 of these systems are spatially associated with 4 different coronae (Didilia, Pavlova, Isong, and Ninmah), and in 8 cases are genetically linked. Eight remaining systems are not related to coronae. Five have foci associated with known magmatic centers (corona or volcano). Two others radiate from a cryptic magmatic center. Additional arcuate systems are interpreted to be circumferential about magmatic centers.

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  • Copyright © 2015 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
Date Created
  • 2015


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