Evolution Of Camlik Fissure-Ridge Travertines In The Baskale Basin (Van, Eastern Anatolia)

International audience; Fissure-ridge travertines (FRTs) are of great importance for the determination and comparison of tectonic deformation ina region. The coeval development of these travertines with active fault zones supplies significant information aboutregional dynamics in terms of deformation pattern and evolution. In this paper, the characteristics of FRTs of the Başkalebasin (eastern Turkey) and responsible regional tectonism are discussed for the first time. The Başkale basin is locatedbetween the Başkale Fault Zone (BFZ) characterised by Çamlık fault and Işıklı–Ziraniş fault. It is located betweendextral Yüksekova Fault Zone and southern end of dextral Guilato–Siahcheshmeh–Khoy Fault system (Iran). Variousmorphological features indicating recent activity are exposed along the BFZ, including offsetting rivers, fissure-ridgetravertine and fault scarps. The Çamlık fissure-ridge travertine composing of three different depositions is observed alongthe eastern edge of the BFZ with approximately parallel orientations. The Çamlık fissure-ridge travertine has beenformed and developed on fault zone related to strike-slip or oblique movements. We explain how kinematic changes offaults can influence the fissure-ridge development.