多元分析在滇东震旦系——寒武系界线地层岩相古地理研究中的应用

本文应用滇东24个剖面的渔户村组中谊村段的各种单因素(包括岩段厚度、组成岩段的岩石薄片单因素——白云质、硅质、泥质、磷质、陆屑及盆屑,和岩段的24种光谱元素)的统计资料,采用趋势面分析、因子分析、非线性映射及对应分析等多元分析方法进行处理,获得各种岩相古地理方面的定量化信息,使滇东震旦系—寒武系界线地层的者相古地理的相区分类、划界以及各类相区之间的相关关系得到定量的合理解释,提高了岩相古地理的研究程度。同时这也是岩相古地理定量研究方法的一种尝试。

THE APPLICATION OF MULTIVARIATE ANALYSIS TO THE STUDY OF LITHOFACIES-PALEOGEOGRAPHY NEAR THE SINIAN-CAMBRIAN BOUNDARY IN THE EASTERN YUNNAN

By means of the trend-face analysis, factor analysis, nonlinear mapping technique and correspondence analysis etc.,multivariate analysis is made on the statistics of various individual factors of its components of the Zhongyicun member of Yuhucun formation in 24 sections on the eastern Yunnan ( including thickness of member, dolomite, silica, muddy, phosphorus, terrigenous clastic, basin fragment etc. by thin section determination and 24 elements by spectrum analysis ) , and is gained quantitative information of the lithofacies-paleogeography. This makes the classification, division and interrelation of facies regions of the lithofacies-paleogeography near the Sinian-Cambrian boundary in the eastern Yunnan reasonably explained on quantity.Thus, the study of lithofacies-paleogeography reaches a new level, and it is also a attempt to make a quantif tive research on lithofacies-paleogeography.