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- Layers of sedimentary rock;a layer of warm air. 多层的沉积岩;热空气层
- Sedimentary rock covering older crystalline layers. 沉淀岩覆在旧的水晶状层之上的沉积岩石
- Sedimentary rock is the best place to find fossils. 沉积岩是找到化石的最佳地方。
- A rounded mass of mineral matter found in sedimentary rock. 混凝土发现于沉积岩中的圆形矿石块
- A magnesia-rich sedimentary rock resembling limestone. 白云灰岩一种似石炭岩，富含氧化镁的沉积岩
- Sedimentary rock composed of fine fragments,as of clay or mud. 泥质岩，黏土岩如粘土或湿泥等由细碎片构成的沉积岩石
- A rounded massof mineral matter found in sedimentary rock. 混凝土发现于沉积岩中的圆形矿石块。
- A magnesia - rich sedimentary rock resembling limestone. 白云灰岩一种似石炭岩，富含氧化镁的沉积岩
- Sedimentary rock composed of fine fragments, as of clay or mud. 泥质岩，黏土岩如粘土或湿泥等由细碎片构成的沉积岩石
- The geological componets are mostly sedimentary rock. 这一带的地质成分主要是沉积岩。
- The sedimentary rocks did not dome. 沉积岩没有形成穹丘。
- A sedimentary rock consisting predominantly of apatite and other phosphates. 磷灰岩，磷钙土主要由磷灰石和其它磷酸盐组成的沉积岩
- Bedding is the most important structural feature of sedimentary rock. 层理是沉积岩最主要的构造特征。
- An evenly layered sedimentary rock that can be split into paving stones. 薄砂层岩，板层砂岩一种有整齐分层的能打砸成铺路石的水成岩
- An underground accumulation of petroleum or gas in porous sedimentary rock. 贮油层，瓦斯层位于多孔的沉积岩中的地下石油层或瓦斯层
- Low-lying areas tend to be formed of granite or sedimentary rocks. 低洼地区大致上由花岗岩及沉积岩组成。
- The sedimentary rocks were originally reposited in the water. 沉积岩原来埋藏于水中。
- Texture of sedimentary rock: clastic texture and nonclastic texture. 沉积岩的结构：碎屑结构和非碎屑结构。
- Formed from matter deposited by water,as certain sedimentary rocks. 水成岩由水中沉淀的物质形成的，如某种沉积岩
- Loose sediments may be changed into solid sedimentary rocks. 松散的沉积物可以变成坚硬的沉积岩。
