干旱区生态环境知识资源中心

Kersi alluvial fan on the northern limb of Sinjar anticline is a complex body consists of two segments the eastern and the western ones. Each consists of several fan and fan-like bodies. The rate of movements on the major thrusts F2 and F3 control the formation, growth and later modifications in all of the fans on the northern limb of Sinjar. The interaction between these major thrusts controls the feeding river courses and the abandonment of some developed fans. The transfer of movement in the footwall direction from F2 to F3 prevents the formation of proper alluvial fans next to these thrusts and pushes the suitable area for fan formation and preservation further toward adjacent syncline on the north. Movements on some blind, slightly inverted faults resulted in flexures in the upper stratigraphic horizons and formation of knick points which helped into the formation of alluvial fanlike bodies in downstream area.