Structural Origin of Sinjar Anticline, NW Iraq  

作　　者：Varoujan K. Sissakian Nadhir Al-Ansari Varoujan K. Sissakian;Nadhir Al-Ansari(Department of Petroleum Geology, Komar University of Science and Technology, Sulaymaniyah, Iraq;Department of Civil, Environmental and Natural Resources Engineering, Lulea University of Technology, Lulea, Sweden)

机构地区：[1]Department of Petroleum Geology, Komar University of Science and Technology, Sulaymaniyah, Iraq [2]Department of Civil, Environmental and Natural Resources Engineering, Lulea University of Technology, Lulea, Sweden

出　　处：《International Journal of Geosciences》2023年第4期305-315,共11页地球科学国际期刊（英文）

摘　　要：The Sinjar anticline is a double plunging, trending almost E-W in the northwestern part of Iraq. It extends in Syria for about 42 km, whereas in Iraq, its length is about 91 km, and the width is about 31 km. The northern limb (45° - 80°) is steeper than the southern limb (15° - 25°), with average plunges dip of 35° and axial plane dipping of 47.5° southwards. The exposed rocks in the anticline range in age from Upper Cretaceous, represented by the Shiranish Formation, to Upper Miocene, represented by the Injana Formation. Google Earth image was used to calculate structural data, which were used to indicate the structural origin of the Sinjar anticline. This was achieved by calculating the Aspect Ratio (AR), Fold Symmetry Index (IFS or IFS), and length of the mountain front (FS). Accordingly, it was found that the structural origin of the Sinjar anticline is a fault-bend fold.The Sinjar anticline is a double plunging, trending almost E-W in the northwestern part of Iraq. It extends in Syria for about 42 km, whereas in Iraq, its length is about 91 km, and the width is about 31 km. The northern limb (45° - 80°) is steeper than the southern limb (15° - 25°), with average plunges dip of 35° and axial plane dipping of 47.5° southwards. The exposed rocks in the anticline range in age from Upper Cretaceous, represented by the Shiranish Formation, to Upper Miocene, represented by the Injana Formation. Google Earth image was used to calculate structural data, which were used to indicate the structural origin of the Sinjar anticline. This was achieved by calculating the Aspect Ratio (AR), Fold Symmetry Index (IFS or IFS), and length of the mountain front (FS). Accordingly, it was found that the structural origin of the Sinjar anticline is a fault-bend fold.

关 键 词：Aspect Ratio Fold Symmetry Index Mountain front Length Sinjar Anticline Iraq 

分 类 号：P54[天文地球—构造地质学]