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砂岩的结构和组构与沉积环境中水动力条件关系密切。砂岩组构指碎屑颗拉聚集成集合的方式,包括颗粒的定向和填集。填集是不定向的,指矿物颗粒在岩石中的分布或聚集形象(美国地质学会编的《地质辞典》)。填集一般有两种“形象”,一种沉积物是完全由粒度均一的球休的颗粒所组成。在这种极为理想的情况下,已证明有六种颗粒无定向排列的“形象”,其中主要是最疏松的立方体填集和最紧密的菱面体填集,此外尚有随意的填集。
The structure and structure of sandstone are closely related to hydrodynamic conditions in sedimentary environment. Sandstone formation refers to the way in which detritus grains aggregate into aggregates, including the orientation and packing of the grains. Filling is non-directional and refers to the distribution or accumulation of mineral particles in the rock (Geological Dictionary compiled by the American Geological Society). There are generally two kinds of “image” to be collected. One type of sediment consists entirely of balls with uniform grain size. In this very ideal case, six “images” of non-aligned particles have been shown, of which the predominantly the most loose cube packing and the tightest rhombus packing are available, in addition to the random packing.