Impact of Geological Structures on Rock Slope Stability in The NW Nose (Plunge ) of Surdash Anticline, Sulaimaniya/ NE Iraq

Abstract

The road network in Surdash anticline is considered as an important road network connecting lower Dukan town with the touristic upper Dukan town . Dukan lake plays an important role in the social and economic activities of Dukan town and the surrounding areas. For assessing the stability of the rock slopes in the area, 9 stations were selected along the upper Dukan road on both sides of Surdash anticline, and their stability was evaluated by the kinematic analysis using DIPS V6.008 software.Kinematic analysis of the studied stations shows thatplanar sliding is possible in stations No. 1, 2, 3 and 8, while wedge sliding is possible in station No. 5, 6, 7 and 9b. The other stations (No. 4and 9a) are stable. Tectonic structures played an extra paradoxical role in the stability of the rock slopes and the type of failure. In most of the selected stations , the geological structure had a negative role, which supported or promoted the failure in the study area. However, in few stations , it had a positive role and converted the slope from unstable to stable conditions. In addition, the presence of incongruent minor syncline folds, especially in the SW-limb of the major anticline, led to the occurring of wedge sliding instead of plane sliding.

Biostratigraphy of the Early Turonian- Late Campanian pelagic limestone (Kometan and Gulneri formations) near Sayid Sadyq Town, Kurdistan Region, NE-Iraq.

“…The age of this zone indicates Early Turonian, which is equivalent to that of Abdel-Kareem et al (1996) [29], [17], and the older part of Globotruncana helvetica zone of Youkhanna (1976) [9], Postuma (1971) [16]. this zone is also equivalent to that proposed by Lawa and Al-Khafaf (2022) [6], Hussain and Al-Sheikly (2015) [30], and Al-Khafaf (2014) [31], also this zone corresponds to the older part of Marginotruncana helvetica zone of Ghafor et al (2004) [32], Ghafor (1993) [33].…”

Paleoceanographic Conditions of Neo-Tethys Deposits in Northeast Iraq (Shiranish Formation) by Geochemical Proxies

“…The sequences of Late Campanian-Maastrichtian were affected by the obduction zone and closure of the Southern Neo-Tethys, and flysch derived from erosion of the Arabian plate flanking thrust belt [3]. The studied area is located in the high fold zone of an unstable shelf of the northeast Arabian plate [4]. This study focused on determining the concentrations of major and some trace elements in carbonate rocks because of their importance in knowing the paleoenvironmental conditions and diagenetic processes.…”

Geomorphological Study of Sulaymaniyah Vicinity Using Satellite Images, Kurdistan Region, Iraq

“…Mohammed et al (2019) extracted and delineated Pira Magroon alluvial fans by using a remote sensing. Hussien et al (2020) assessed the stability of the rock slopes in the northwestern plunge of Surdash Anticline, using Kinematic analysis, and showed that some stations suffer possibly from planer and wedge sliding whereas others are stable. Forti et al (2021) conducted a geomorphological study in the Kurdistan Region and discussed different geomorphological features.…”