The main sedimentary microfacies comprise distributary channel, mouth bar, distal bar, blanket sand, natural levee and crevasse splay.
主要沉积微相为水下分流河道、河口坝、远砂坝、席状砂、天然堤、决口扇等。
2
The natural levee, crevasse splay and overbank sand are difficult to be effective reservoir for their content of mud-bearing silt, silty mud and unmixed mud.