The continental shelf

china’s seashore continental shelf is one of the widest in the wouldst in the world. Like the mainland surface, the seashore floor, generally speaking, slopes from northwest to southeast, forming a gen tel continental shelf zone that is a natural extension of the mainland into the sea topographically and geologically, while outside that zone is a topographically complicated continental slope, trench or deep-sea basin zone. The subcontinental floors of the Bohai and Hunghai seas are entirely on the continental shelf while two-thirds of the east china sea and more then half of the south china sea are on the continental shelf. The seashore continental shelf is richly endowed with oil and natural gas.