在黄河源区支流日玛曲河谷发现第四纪湖相沉积，以含砾粉砂、粉砂、粘土互层组合为特征，形成河流的第一阶地基座。
A group of Quaternary gyttjor are discovered in Rimaqu basin in the Yellow River source area which formed the first terrace foundation, included gravel aleurite, aleurite and clay layer.
储层岩石类型有砾岩、含砾砂岩、中细砂岩及粉砂岩。
The reservoir rocks consist of conglomerate, pebbly sandstone, medium-fine sandstone and siltstone.
锦州9 - 3油田主力油层东下段储层主要为三角洲沉积，岩性为含砾砂岩、中砂岩、细砂岩及粉砂岩的岩性组合。
The mainly reservoir of Jinzhou 9-3 oil field is mainly delta sediments, composed of pebbly sandstone, sandstone, fine sandstone and siltstone, lithologic composition.
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