Classification of Carbonate Rocks According to Depositional Textures
Classification of Carbonate Rocks According to Depositional Textures
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发表时间：
1962
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通讯作者：
R. J. Dunham
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作者：
R. J. Dunham
有三个结构特征似乎特别适用于分类那些保留了沉积结构的碳酸盐岩：(1)碳酸盐泥浆的存在或不存在，这是泥质碳酸盐与灰岩的区别；(2)颗粒的丰富，这使得泥质碳酸盐可以细分为泥岩、怪石和包岩；以及(3)沉积过程中存在结合的迹象，这是边界岩的特征。颗粒支撑和泥浆支撑的区别区分了包岩和怪石--包岩充满了它独特的颗粒混合物，而怪石则不是。岩石保留的沉积结构太少，无法分类，因此被搁置为结晶碳酸盐。
Three textural features seem especially useful in classifying those carbonate rocks that retain their depositional texture (1) Presence or absence of carbonate mud, which differentiates muddy carbonate from grainstone; (2) abundance of grains, which allows muddy carbonates to be subdivided into mudstone, wackestone, and packstone; and (3) presence of signs of binding during deposition, which characterizes boundstone. The distinction between grain-support and mud-support differentiates packstone from wackestone--packstone is full of its particular mixture of grains, wackestone is not. Rocks retaining too little of their depositional texture to be classified are set aside as crystalline carbonates.