(a) Simplified geological map of the Qandil Mountain area in the Kurdistan Region showing the Lower Cretaceous–Paleocene angular unconformity which is located between outcrops of the Qulqula Radiolarian Formation and Red Bed Series (modified from Sissakian, 1997). Cross-section A–A′ is shown in Figure 8. (b) Names of areas and towns that are mentioned in the text, X1 – SE of Mawat town, X2 – south of Chwarta town. (c) Simple tectonic map of the studied area showing the tectonic zone of the Kurdistan Region in NE Iraq (Jassim & Goff, 2006).
Geological map of the Chwarta area showing the location of the Lower Cretaceous–Paleocene angular unconformity (black stars) (Modified from Sissakian, 2000). Cross-section B–B′ is shown in Figure 10. X1 and X2 are locations of outcrops of red beds.
Imbricated pebbles of Red Bed Series. (a) Qulqula Gorge section. (b) Same structure at the Basine section. (c) Imbricated pebbles of Tanjero Formation east of Chwarta town. The black lines are showing bedding planes to which the imbricated pebbles make acute angles against palaeocurrent direction. (d) Stereonet of the poles of the imbricated pebbles of the Red Bed Series showing SW palaeocurrent direction.
(a) Siliceous limestone of the Qulqula Radiolarian Formation at the Qulqula Gorge section showing content of radiolarian fossils (circular white spots). (b) Bioclast-peloidal limestone of same formation and the same section. (c) Alveolina ovulum (U. Paleocene), equatorial section, Qulqula Gorge section. (d) Nummulites perforatus (L. Eocene), axial section, Qulqula Gorge section.
Outcrop photographs showing the angular unconformity between the limestones (a) and cherts (b) of the Qulqula Radiolarian Formation and the overlying conglomerates of the Red Bed Series. Location: left side of Qulqula Gorge, Kurdistan Region, Iraq.
Schematic cross-section of the Qulqula Gorge along the left side of Marado valley, showing the angular unconformity between the Lower Cretaceous Qulqula Formation and the overlying Eocene Red Beds Series. See location of A–A′ in Figure 1.
Field photographs of the angular unconformity between the conglomerates of the Maastrichtian Tanjero Formation and the hemipelagites of the Campanian Shiranish Formation at (a) Qandil area (36°20′31.4″N, 45°07′17.6″E) (directly to the east of Suwais village); (b) at Do Awan (35°59′4.68″N, 45°24′36″E), with line interpretations.
Bedded cherts and siliceous shale of the Qulqula Radiolarian Formation showing medium-scale folds which are exposed along the side road-cut at 4 km to the east of Chwarta town inside the Imbricate Zone.