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汉语拼音：chén jī yán

又称水成岩”。松散物质经成层沉积并固结而成的岩石。砾石、砂、黏土、灰泥等母岩风化产物及生物残骸经搬运、沉积和成岩作用，在陆地和水盆地中形成。主要分布在地壳表层。虽体积只占地壳的5%，但陆地出露面积中却占75%。与火成岩、变质岩一起构成了地壳。

• A very common sedimentary rock is called shale, which is a soft rock and was obviously formed by being deposited on the sea bed.

  一块极普通的沉积岩叫页岩，这种页岩质地松软，很明显是通过海底沉积作用形成的。

• On Earth, the deposit of sedimentary rock at the bottom of the ocean is part of larger geological cycles.

  在地球上，海底沉积岩的累积，也正是更大范围的地质循环的一部分。

• The main parent rock of the early Yanchang Formation is complex metamorphic rock of Archean and metavolcanic rock-sedimentary rock system.

  延长组早期沉积的母岩主要为太古宙的复杂变质岩系及下元古界的变火山-沉积岩系。

• The attenuation in the sedimentary rock exceeds that of igneous rock.

  弹性波振幅在沉积岩的衰减量大于在火成岩中的衰减量；

• Formed over millions of years, coal is a sedimentary rock that has been mined by people for use as fuel at least as far back as 1000 BC.

  经过数百万年形成的，煤是一种沉积岩，已开采作为燃料使用的人，至少可以追溯到公元前1000年。

• Middle-Upper Proterozoic marine facies strata is one of the oldest areassedimentary rock in the northern China.

  华北北部中、上元古海相地层是地球上最古老的沉积岩地区之一。

• For the determination of the thickness of basaltic layers the survey area has to be extended into sedimentary area .

  为了测定玄武岩岩层的厚度，测区必须扩大到沉积岩区。

• Formation of sedimentary rocks: weathering, erosion, transportation, deposition and diagenesis.

  沉积岩的形成过程：风华作用、侵蚀作用、搬运、沉积和成岩作用。

• Through the sedimentary rocks in the basin are analyzed the geochemical method, the performance of different tectonic background.

  通过对盆地内的沉积岩岩石进行地球化学方法分析，反演出不同的大地构造背景。