شواهد زمین ریخت شناختی زمین ساخت جنبا در فرادیواره گسله خزر

Abstract

The present study, carried out during the geological mapping of the Behshahr Sheet, indicates that activity of the Khazar fault and fold is well reflected in the geomorphology of Neka river system in backlimb of the structure. An important geomorphic phenomenon is introduced here as “tilted kink”, which is produced by deflection of oblique parts of the river downslope the backlimb of Khazar anticline. This feature is different from the classic features introduced for deflection of rivers by folding. Development of these features, associated with capture of the Neka river by deflected transverse rivers, caused the Neka river to develop into a major longitudinal river parallel to the Khazar anticline, in its backlimb. Considering the features studied along the Neka river, capture of the rivers flowing at higher profiles by the rivers flowing at lower profiles may be considered as one of major reasons behind the development of knickpoints along the river

کلید واژه ها: ریختزمینساخت بهشهر رودخانهنکا تاقدیسخزر تکتونیک سایر موارد