analyzing of the lithologic character and geochemi-cal data in lower Es2 of Wen 79 fault block in Wenliu area, it is agreed that its sedimentary facies should be shallow delta system.

• 通过对文留地区文79断块区沙二段下亚段的岩性特征和地球化学等资料的分析,认为该区沙二段下亚段为浅水三角洲环境。