Quantification of SEM microtextures useful in sedimentary environmental discrimination
Quantification of SEM microtextures useful in sedimentary environmental discrimination
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DOI：
10.1111/j.1502-3885.2001.tb01220.x
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发表时间：
2001-06
期刊：
影响因子：
2.2
通讯作者：
W. Mahaney;A. Stewart;V. Kalm
中科院分区：
文献类型：
--
作者：
W. Mahaney;A. Stewart;V. Kalm
扫描电子显微镜成像通常用于识别和区分沉积环境，主要目的是识别被认为是特定沉积环境或地质过程的指示的单个微特征或微结构组。由于很少有显微结构被认为是代表一个单一的地质过程，有必要分析大量的石英砂和其他矿物颗粒，目的是确定在一个不同的样品组内的显微结构的范围内出现的频率。使用百分比频率不同的微观纹理从套房的河流，冰川河流和冰川砂从网站在爱沙尼亚和拉脱维亚，我们调用不同的样本套件使用欧几里德距离的统计比较。这为测量不同沉积物和形成它们的过程之间的差异提供了定量手段，也是有用的量化工具。
Scanning electron microscopic imagery is often used to identify and discriminate among environments of sedimentation with the main aim of identifying individual microfeatures, or suites of microtextures, that are considered indicative of a particular depositional environment or geologic process. Because few microtextures are considered to represent a single geologic process it is necessary to analyze a large number of quartz sands and other mineralic grains with the objective of determining the frequency of occurrence of a range of microtextures within a distinct sample suite. Using percent frequency of occurrence of different microtextures from suites of fluvial, glaciofluvial and glacial sands from sites in Estonia and Latvia, we invoked statistical comparison of different sample suites using Euclidean distances. These provide a quantitative means of measuring the differences among different sediments and processes that formed them and also a quantification tool useful