Abstract
The main major ridge belts of Ganiki Planitia on Venus (Laūma, Ahsonnutli and Pandrosos Dorsa) are part of the fan-shaped ridge belt complex along the 200 ‡ parallel of longitude. These ridge belts with evidence of crustal shortening support the idea of a large-scale E-W compression. The ridge belt patterns indicate a N-S shear component. These forces are explained by a triangular planitia area which compressed by surrounding terrains. The crustal shortening and ridge belt formation indicates compressional plate movement stresses in the uppermost lithosphere.
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