Physics
Scientific paper
Sep 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.1501m&link_type=abstract
American Astronomical Society, DPS meeting #28, #15.01; Bulletin of the American Astronomical Society, Vol. 28, p.1118
Physics
Scientific paper
The Akna Montes-Atropos Tessera region appears to have undergone three phases of tectonic evolution. The first one consists of compressional deformations, folds and thrust faults trending NE, that formed the Akna Montes and most of the compressional features in western Atropos Tessera. A second phase, likely contemporaneous with the first one, is dominated by shear stress deformations which involved most of the Atropos Tessera and probably developed along NW planes. The tectonic pattern is expressed as sinuous, tightly closed ridges arranged in an "en-echelon"; similar tectonic pattern has been previously recognised in Itzpapalotl Tessera (1). The third phase consists of extension probably related to the gravitational spreading of the Akna Montes that strongly involved the western portion of the Akna belt and the part of Atropos close to the mountain. A major consequence of the spreading is the splitting of the Akna Montes in two portions separated by a lava flooded valley which parallel the compressional deformation of the Akna belt. Also, many grabens trending NW developed in the western Akna during this phase (2). Minor evidences of extension have been found in the western Atropos Tessera and interpreted as related to the pro-gradation to the West of the relaxation of the mountain belt (3). This scenario is quite similar to the tectonic of terrestrial high plateaus associated with mountain belts (Tibet, Altiplano, Basin and Range) where compression, shear and extension represent the tectonic evolution of the plateau over time (4). This tectonic evolution is explained by the variations of the values of principal average stresses due to the gradual thickening of the crust. References: (1) Kaula et al. (1992), Jour. Geophys. Res., 97:16,085-16,120 (2) Smerekar & Solomon (1992), Jour. Geophys. Res., 97:16,121-16,148 (3) Ori & Marinangeli (1996), LPSC XXVI:985-986 (4) Froidevaux & Ricard (1987), Tectonophysics:227-238
No associations
LandOfFree
Tectonic Evolution of Western Ishtar Terra (Akna Montes-Atropos Tessera), Venus does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Tectonic Evolution of Western Ishtar Terra (Akna Montes-Atropos Tessera), Venus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tectonic Evolution of Western Ishtar Terra (Akna Montes-Atropos Tessera), Venus will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1461648