A Study on Karst Morphology Forms in Manjil Region of Gilan Province

The purpose of this study is The Study on Karst Morphology Forms in Manjil Region of Gilan Province. Due to geological features and quantity and type of rainfalls in Gilan Province and other effective factors on formation and development of Karst and Karst water resources, it is necessary to study karst morphology forms of this region. This study has studied Manjil region. It has first studied and identified karst forms of the region and then considered their formation in relation to the regional tectonic and creation of water potentials. Karst morphology forms of the region were identified and the cause of their creation was specified. Among them, Dorfak Mountain with an altitude of 2714 m in the south- central part of Gilan Province in Rudbar City near to Manjil can be mentioned as an example. Also Manjil Cheshmeh Bad Cave with an altitude of 1400 m above sea level is among other karst phenomena of the region and is regarded as the most important karst phenomenon in Asmari limestone.