鲕粒的结构变化与成岩作用性质和强度的关系
RELATIONSHIP BETWEEN THE CHANGES OF OOIDAL TEXTURE AND THE PROPERTY AND STRENGTH OF DIAGENESIS
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摘要: 成岩作用是沉积物转化为变质岩之前的一系列重要作用的总合,成岩作用的性质和强度控制了岩石的总特征,因而研究成岩作用具有重要的理论和实际意义。关于成岩作用的定义和成岩阶段的划分等问题,多年来存在着很大的分歧。综合国内外常见术语和划分方案可将成岩作用划分为同生和准同生作用、成岩作用、后生作用和表生作用等五个阶段。通过岩石的组构类型和某些颗粒的结构特征及变化研究成岩作用,不失为一种常用而有效的方法。Abstract: Oolites are common grains in carbonatites, and their tenure changes arc important indicators in studying the property- and strength of diagenesis.It has been found that splits and deformed oolites formed under compaction, and the sutured tcature and the pressure shadow as }s-ell as recrystallization and dolo- mitiz anon formed under pressure solution are related to the property and st- rength of diagenesis.
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