Abstract:

Majiatan thrust belt in the west margin of Ordos Basin is a typical detachment thrust belt.The main detachment beds are Carboniferous coal measures and the boundary plane between basement and sedimentary cover in the area.The genetic types of the thrusts are floor thrust, branch thrust, recoil fault and cross fault.The fold types of the thrust belt include fault-extended fold and fault-slided fold.The thrust belt contains recoil, recoil-cut and branch types of frontal structures and two structural transformation forms such as thrust to thrust and thrust to fold.The south end of the thrust front is favourable for oil and gas exploration.