Styles of tectonic deformations on Venus: Analysis of Venera 15 and 16 data
Article first published online: 20 SEP 2012
Copyright 1986 by the American Geophysical Union.
Journal of Geophysical Research: Solid Earth (1978–2012)
Volume 91, Issue B4, pages 399–411, 30 March 1986
How to Cite
1986), Styles of tectonic deformations on Venus: Analysis of Venera 15 and 16 data, J. Geophys. Res., 91(B4), 399–411, doi:10.1029/JB091iB04p0D399., , , , , and (
- Issue published online: 20 SEP 2012
- Article first published online: 20 SEP 2012
- Manuscript Accepted: 19 AUG 1985
- Manuscript Received: 15 MAR 1985
Analysis of the radar images obtained by Veneras 15 and 16 leads to the conclusion that the ridge-and-groove structures on the surface of Venus are the result of tectonic deformation. Although the mechanism of such deformation cannot yet be unequivocally deduced, several styles of deformation can be described. Areal deformation occurs where horizontal stresses have operated over large areas. Shear deformation appears in bands showing differential longitudinal deformation. Transversal stresses operating over long and relatively narrow areas have produced belt deformation. Circular deformation is related to a specific locus of the stresses. The absence of densely cratered areas indicates that the terrains were deformed after the period of heavy bombardment. The origin of the stresses could be drag of the lithosphere by asthenospheric currents or gravity-induced spreading of surface material over upwellings. A general conclusion is that in the surveyed area of Venus neither terrestrial plate tectonics nor lunar-highland-type terrain exists.