Mathematics
Scientific paper
Mar 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28..743k&link_type=abstract
Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 743.
Mathematics
Mathematical Models, Venus Surface, Tectonics, Fracture Mechanics, Compression Loads, Failure Modes
Scientific paper
Tectonic deformation of the lithosphere on Venus may result from horizontal stresses induced by mantle convection. Lowland areas on Venus which correspond to mantle downwellings may experience horizontal compressive stresses, consistent with many of the structural features observed in lowland volcanic plains, such as contractional ridge (fold) belts and wrinkle ridges formed in association with shallow thrust faults. However, high resolution radar images from the Magellan mission to Venus revealed for the first time the presence of fracture belts and extensional lineaments (grooves) in the lowland volcanic plains of Lavinia Planitia. Though the existence of contractional features was known and studied prior to the Magellan mission, lowland extensional features were a new discovery and the mechanisms responsible for their formation remain unclear. We address the origin of a system of extensional lineaments in the southwest region of Lavinia Planitia. We believe these features are secondary structures formed in association with localized strike-slip faulting over hundreds of kilometers, and we use 2D boundary element techniques to assess the feasibility of this mechanism.
Aydin Atilla
Koenig Elissa
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