The buried hill tuff oil pool of Hanan Oilfield has an unconformable contact with overlying sandstone of Aershan Group.
哈南油田凝灰岩潜山油藏与上覆阿尔善组的砂岩油藏呈不整合接触。
Wudaoliang group is grayish - white, yellow - grey, dark - grey ash rock, which interbeded with the conglomerate, sandstone, a little amount mudstone, oil shale with unconsolidated sand mud rock.
五道梁群以灰白色、灰黄色灰岩为主，含有砾岩、砂岩，夹有少量泥岩、油页岩和未固结砂泥沉积。
Gucheng formation which is the early deposit of Guanzhuang group is composed mainly of conglomerate rock with conglomerate-bearing sandstone and sandy mudstone.
其早期形成的固城组以砾岩为主，夹含砾砂岩及砂质泥岩。
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