The fan delta front sheet sand and the slump turbidite system that arecontrolled by the cascade fault landform of the actic region is the advantageous areaof seeking a section of lithologic trap of the Dongyi interval.

• 陡坡带断阶地貌控制下的扇三角洲前缘砂体及滑塌浊积体是寻找东一段岩性圈闭的有利地区;