National Geographical Organization Scientific- Research Quarterly of Geographical Data (SEPEHR) 2588-3860 21 84 2013 02 19 Formation and Evolution of Gorges in Folded Part of Zagrus Mountain- Case Study: Tang Takab in Khaviz anticline, northeast of Behbahan Formation and Evolution of Gorges in Folded Part of Zagrus Mountain- Case Study: Tang Takab in Khaviz anticline, northeast of Behbahan 85 94 26032 FA Gholam Hossein Eskani Kazazi Assistant Professor of Islamic Azad University, Shahr-e-Rey Branch Journal Article 2012 08 22 Gorges are considered ont of the most attractive and complicated phenomena in geomorphology. Their Complexities have led to some hypotheses about their formation. Some of these hypotheses are considered classics of the field now. <br />In this research, many methods have been employed in studying of the transverse valley of Tang-Takab, such as topographic and geologic maps and aerial-photos.The valley is located in anticline of khaviz in northeast of Behbahan. In surveying the area, several observations were  made. We tried to clarify how these gorges were formed in the late cretaceous (Goorpi construction) Ecocene (pabdeh construction) Oligo – Miocene (Asmany calcareous construction) accompanied with Quaternary alluviums. Based on new hypotheses, the progress of formation of gorges in the transverse valley of Tang Takab became clear. The processes are active in changing a vast area in zagrus mountain. Therefore, for interpretation of this phenomenon there is  no need to draw on mechanisms, accidents or hypotheses. It should be noticed that formation of transverse valley of Tang-Takab is not related to only one specific process, but to several factors which have happened simultaneously Gorges are considered ont of the most attractive and complicated phenomena in geomorphology. Their Complexities have led to some hypotheses about their formation. Some of these hypotheses are considered classics of the field now. <br />In this research, many methods have been employed in studying of the transverse valley of Tang-Takab, such as topographic and geologic maps and aerial-photos.The valley is located in anticline of khaviz in northeast of Behbahan. In surveying the area, several observations were  made. We tried to clarify how these gorges were formed in the late cretaceous (Goorpi construction) Ecocene (pabdeh construction) Oligo – Miocene (Asmany calcareous construction) accompanied with Quaternary alluviums. Based on new hypotheses, the progress of formation of gorges in the transverse valley of Tang Takab became clear. The processes are active in changing a vast area in zagrus mountain. Therefore, for interpretation of this phenomenon there is  no need to draw on mechanisms, accidents or hypotheses. It should be noticed that formation of transverse valley of Tang-Takab is not related to only one specific process, but to several factors which have happened simultaneously https://www.sepehr.org/article_26032_bd4341b9f5d6bd9c55b3fde4b287bd50.pdf