پژوهشي در تكامل ژيومورفولوژي درياچه نيور، شمال غرب ايران منطقه اردبيل

A Study on the Geomorphological Evolution of Neor Lake,North -West Iran, Ardabil Area

Neor lake is a geomorphological graben which was formed as a result of earth structural elements. Neor fault and the fault west of the lake which have been active since Eocene period, are the chief factors in the formation and evolution of Neor lake. The lake has been formed during glacial cold in which rainfall was more and evaporation seems to be less than today. As a result more water poured into the lake and made it full. It is therefore believed that the basin of the Neor lake is related to an external drainage network, Ghara-so. Due to the high altitude of the region, the erosion of the drainage network in the Ghara-so sub-catchments, has been more active in the past than it is now. This erosion has resulted in the destruction of andeset and basalt rocks. Various landforms in the basin of Neor lake such as alluvial fans, have been formed where the lake connects the mountain. Scree, nivation, etc are also created. In this paper we will study the evolution and morphogenesis factors of land formation and geomorphological phenomena in Neor region.