misc. argillaceous rock
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沉积岩有杂砂岩、粉砂岩、凝灰岩、泥质岩等。
The sedimentary rocks are graywacke, siltstone, tuff andpellitie, etc.
暗色泥质岩在全区的深坳陷和斜坡均有发育。
The dark shale is broadly forming in all the area of the slope and the deep depression.
潜山顶部最为重要的盖层是古近系东营组泥质岩。
The most important caprock at the top of the buried-hill is Paleogene Dongying formation.
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