GSINET | Geological Survey of Iran , North - East Territory

Writers : Ramezani, M.; Qasemi, M. R.
Refference : 28th Symposium on Geosciences and the 14th Symposium on Geological Society of Iran
Publishing Year : 1389

Abstract :

Structural evidence in the Aghdarband erosional window indicate that this region was� affected by north-dipping left-lateral inclined transpression during the Eocimmerian (late triassic) event. Microstructural study of samples from this region resulted in a kinematic vorticity number of 0.95 for northern part of the Aghdarband window, indicating dominance of simple show over pure shear in the northern part.
According to a change in macroscopic structures the kinematic vorticity number reduces towards south of the region. Study of calcite twining in the carbonate rocks� of northern zone, and comparing the results with standard deformation map for marble, it appears that dominant deformation mechanisms in this rock during the Eocimmerian event were dislocation glide and dislocation creep. This deformational event occurred in a low temperature and high differential stress regime.

Subject List : Stress

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