混层伊利石-蒙脱石的鉴定及其成岩意义  

IDENTIFICATION AND DIAGENETIC SIGNIFICANCE OF INTERSTRATIFIED ILLITEMONTMORILLONITE SERIES

作　　者：黄思静[1] 

机构地区：[1]成都地质学院

出　　处：《沉积与特提斯地质》1990年第5期23-29,共7页Sedimentary Geology and Tethyan Geology

摘　　要：引言混层伊利石-蒙脱石广泛分布于泥岩和砂岩填隙物中,不同的混层类型(指规则或不规则混层)和混层比例是判断成岩强度、尤其是成岩温度的极其重要的手段,这在沉积学及石油地质中至关重要。然而,在一些文献中,混层伊利石-蒙脱石并未得到正确解释,尤其是没有将一些不规则混层类型识别出来,而将其解释成了蒙脱石。这无疑会造成对一些成岩过程的错误推断。为此,本文力图简要论述在X射线衍射图上,混层伊利石-蒙脱石的识别方法,同时简述其在成岩作用研究中的意义。Interstratified illite-montmorillonite series occur universally in claystones and in sandstones as fillings. The types and proportions of interstratified illite-montmorillonite series are believed to be very important in the interpretation on clastic diagenesis. For this reason, the present paper has documented the importance of identification and compositional determination of interstratified illitemontmorillonite series by x-ray diffraction analysis, and clearfied some confused ideas, including the differences between regularly and irregularly interstratified illite-montmorillonite series, and between montmorillonite and irregularly interstratified illite-montmorillonite as well as estimation of their proportions.

关 键 词：成岩作用研究 成岩过程 填隙物 沉积学 反射强度 类型识别 成岩阶段 识别方法 镜质体反射率 岩相古地理 

分 类 号：P642[天文地球—工程地质学]