Volume 18, Issue 53 (No.3&4-صفحات انگلیسی از 31 تا 74 2003)
2003, 18(53): 141-162 |
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Structural Evolution of Alburz Mountain and its Related Sedimentation. Journal title 2003; 18 (53) :141-162
URL: http://jsci.khu.ac.ir/article-1-1114-en.html
URL: http://jsci.khu.ac.ir/article-1-1114-en.html
Abstract: (5818 Views)
A part of Alburz Mountains which is located between Damghan plain (in the south) and Gorgan plain (in the north) structurally is a S-SE vengeance thin-skinned flodthrust belt. Sequential thrusting and related folding during Cimmerian and Alpine orogeny have been the most deformation style since late Triassic. Tectonostratigraphy of Alburz Based on foreland stratigraphical evolution models reveals that structural evolution of Alburz had taken place at three stages: 1) Late Triassic– Early Jurassic duo to Cimmerides 2) Late Cretaceous – Early Paleocene duo to Middle Alpine compress ional movements 3) Neogene duo to Late Alpine compress ional movements. Southward migration of Alburz in each stage accompanied by generation of new thrust faults , uplift and unroofing in fold- thrust belt and caused southward marine transgress-sion and synorogenic classic sedimentation in Foreland basin. Each stage of structural evolution followed by a relaxation period that is characterized by isostasic rebound, reducing of erosion and shallow marine sedimentation in foreland basin duo to north war marine regression.
Keywords: uplift and unroofing in fold
Published: 2003/07/15
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