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首页> 外文期刊>Acta Geologica Sinica >A New Method for Clay Mineral Analysis and Its Application in Geology
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A New Method for Clay Mineral Analysis and Its Application in Geology

机译:粘土矿物分析的一种新方法及其在地质中的应用

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摘要

X-ray diffraction (XRD) peaks in a low-angle diffraction section of clay minerals, especially those of authigenic origin, have broadening and tailing features in shape. Using the five basic parameters, peak position, peak height, width, shape coefficient and asymmetry, to describe an XRD peak is more accurate, comprehensive and integrated than using only 3 of them, position, height and width. Following the concept of the five basic parameters of an XRD peak, the program Decoform proposed in this study provides more information in mineralogical analyses by fitting actual XRD profiles. In combination with the HW-IR plot, Decoform can be systematically and accurately used in the comprehensive analyses of crystallinity, domain size, lattice strain and quantitative phase. It is also of value for the geological investigations of diagenesis, metamorphism, basin maturity, structural stress field and so on.
机译:粘土矿物,尤其是自生矿物的低角度衍射区中的X射线衍射(XRD)峰在形状上具有加宽和拖尾的特征。使用峰位置,峰高度,宽度,形状系数和不对称性这五个基本参数来描述XRD峰比只使用位置,高度和宽度中的三个参数更准确,全面和集成。遵循XRD峰的五个基本参数的概念,本研究中提出的Decoform程序通过拟合实际XRD剖面图提供了矿物学分析的更多信息。结合HW-IR图,可以将Decoform系统准确地用于结晶度,畴尺寸,晶格应变和定量相的综合分析。对于成岩作用,变质作用,盆地成熟度,构造应力场等地质研究也具有重要意义。

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