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在陕西富平,中奥陶统平凉组中,发育有含巨大岩块的杂乱角砾石灰岩。这种石灰岩以其碎屑大小悬殊,排列紊乱,不同成因的石灰岩砾石混杂,巨砾和岩块呈漂浮状散布于较细的砾石之中为特征。杂乱角砾石灰岩呈席状夹在深水盆地相的页状石灰岩和薄板状石灰岩中,其内部缺乏层理,上下接触界限截然。这些标志证明,它们是深水盆地的海下碎屑流沉积。杂乱角砾石灰岩的碎屑物,主要为浅水台地边缘的碳酸盐岩和较深水斜坡的碳酸盐岩的崩解产物。它们同深水盆地的灰泥混合,在重力的直接作用下,以沉积物重力流的方式搬运,在斜坡向盆地
In Fuping, Middle Ordovician Pingliang Formation in Shaanxi Province, cluttered breccia limestone with huge rock mass is developed. This type of limestone is characterized by its fragmented size, disorganized arrangement, mixed limestone gravels of different origins, and the presence of boulders and rocks floating in finer gravels. Cluttered breccia limestone is shaped like sheet-like limestone and sheet-shaped limestone in the deep-water basin facies, the lack of bedding within the upper and lower contact limits. These signs prove that they are sediment deposition beneath the deep-water basin. The clutter of clinker breccia limestone is mainly the carbonate rock near the shallow water platform and the carbonate rock at the deeper water slope. They are mixed with the stucco in the deep-water basin and are transported by the gravitational flow of sediment, under the direct action of gravity,