The effect of the deformation of the subsurface faults on covering fanerozoic sediments in the southeast of Zagros using space remote sensing data

Category Tectonic & Seismotectonic
Group GSI.IR
Location 20th symposium on geosciences
Holding Date 16 April 2008

     The area of study is located in SE Zagros foreland fold-thrust belt and is affected by influence of subsurface structures and related young folds during late Alpine Zagroside orogeny. Topography, drainage pattern, rock spectral reflection, curvilinear geometry of fold hinges, and geometry of younger fold hinges have been utilized to document and map the transverse lineaments. Up on these criteria, two different subsurface strike-lateral transverse fault sets have been identified. The first set, trending NE-SW was documented based on left lateral displacement of the foreland structures, up on alignment of salt plugs pierced anticline hinge zones, and on left lateral curvilinear geometry of the fold hinges. The second sets, trending NW-SE, however, have not touch the surface, therefore littel alignment of salt plugs and surface displacement of the structures were seen along it. Nevertheless, determination of right lateral curvilinear geometry of the foreland fold hinges and generation of younger folds detected their right lateral movement. Emplacement of Upper Proterozoic salt plugs to surface by movement of right-lateral transverse faults and curvilinear geometry and displacement of the foreland fold hinges along the subsurface lineaments implies that these lineaments are deep-seated. Trends of these deep-seated transverse faults can be correlated by trend of basement faults in northern margin of Arabian platform.

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