Structural and geomorphological aspects of the Çatak landslide,NE Turkey

Abstract

The bedrock of the Çatak area comprises Upper Cretaceous marls, shales, tuffites, limestone and basalts. This is overlain by younger colluvium, essentially loose material detached from the bedrock masses by chemical, mechanical and/or tectonic processes where older rocks crop out. The bedrock is slightly folded but highly fractured. The geological and the geomorphological field investigations have shown that jointing and faulting in combination with pervasive weathering, steep topography, water incision, heavy rainfall and road cuts have all played a significant role in the occurrence of the landslide.

Assessment of possible damaged areas due to landslide-induced waves at a constructed reservoir using empirical approaches: Kurtun (North Turkey) Dam reservoir area

“…In the Northern part of Turkey, large landslides such as the Catak (Genc, 1993), Dagkoy (Ocakoglu et al, 2002), Kuzulu (Gokceoglu et al, 2005), Tuzla (Gokceoglu et al, 2009) and Tortum (Duman, 2009) are frequent. The Hardisagir landslide, which forms the basis of this study, is a large landslide located on the left abutment of the Kurtun Dam reservoir area.…”

Stability assessment of high-steep cut slope debris on a landslide (Gumushane, NE Turkey)

“…Each human activity that impacts the natural environment changes the natural morphology, stress conditions, and natural balance (Alemdag et al 2013(Alemdag et al , 2014, resulting in the triggering of various landslide types. Many landslides throughout the world have been investigated and reported by researchers (e.g., Genc 1993;Fell et al 1996;Hungr et al 1999;Tarcan and Koca 2001;Ferreira 2007;Mantovani et al 2010;Jaiswal et al 2011) andmany researchers (e.g., Fellenius 1936;Janbu 1954aJanbu , b, 1968Janbu , 1973Bishop 1955;Bishop and Morgenstern 1960;Lowe and Karafiath 1959;Morgenstern and Price 1967;Spencer 1967;US Army Corps of Engineers 1970;Sarma 1973;Chung and Fabbri 1999;Tunusluoglu et al 2007;Gurocak et al 2008;Kahatadeniya et al 2009;Nefeslioglu et al 2010;Di Maio et al 2010;Dag et al 2011;Ferrari et al 2011;Zheng 2012;Liu and Zhao 2013;Jeldes 2013;Gu et al 2014;Alemdag et al 2015) have conducted slope stability studies as part of the landslide literature. Different methods have been used in these studies, which were conducted at either local or regional scale according to the type of problem and the properties of the soil.…”