Depositional mechanisms from the size analysis of clastic sediments
Depositional mechanisms from the size analysis of clastic sediments
复制标题
DOI：
10.1306/74d70fce-2b21-11d7-8648000102c1865d
复制
发表时间：
1964-03
影响因子：
2
通讯作者：
B. Sahu
中科院分区：
文献类型：
--
作者：
B. Sahu
从粗碎屑沉积物（砾石、砂、粉砂及其岩化当量）的粒度分布出发，用满意的方法研究了不同沉积机制或过程与不同沉积环境的区别问题。通过多变量判别分析，建立了几个具有显著性水平的判别函数，以区分具有相似能量条件的相邻机制和环境。样本统计数据在空间和/或时间上的变化在不同的机制和环境中是一致的。在对数对数论文中，12与{[SKg]/[SMz]·S(12)}的经验图只有在两个或更多的样本可用于判别时才有用，但判别函数甚至可以用于单个样本。目前，有可能区分风成、海洋、河流和浊流机制；在沿海（海滩）和浅水（低于300英尺）环境之间，在海洋沉积过程的范围内。
ABSTRACT The problem of discrimination between the different mechanisms or processes and the different environments of deposition from the size distribution of coarse clastic sediments (gravels, sands, silts, and their lithified equivalents) has been investigated by satistical methods. Several discriminant functions with their levels of significance are established by multivariate discriminatory analysis in order to distinguish between adjacent mechanisms and environments having closely similar energy conditions. The variations in the sample statistics through space and/or time are concordant within the different mechanisms and environments. An empirical graph of 12 versus {[SKg]/[SMz] · S(12)} on a log-log paper is useful only when two or more number of samples are available for discrimination, but the discriminant functions can be used even for single samples. Presently, it is possible to distinguish between aeolian, marine, fluvial, and turbidity current mechanisms; and between littoral (beach) and shallow agitated water (down to 300 feet) environments within the spectrum of marine depositional processes.