The results show that the Interval 6 of Yanchang Formation is composed of lithic feldspathic sandstones, feldspathic lithic sandstones and feldspathic sandstones.

• 研究结果表明长6油层组浊积岩的岩石类型为长石岩屑砂岩、岩屑长石砂岩和长石砂岩；