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利用粒度分析资料判断沉积环境的新方法

A NEW METHOD TO DISTINGUISH SEDIMENTARY ENVIRONMENT BASED ON THE DATA OF THE GRAIN SIZE FREQUENCY DISTRIBUTION

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【作者】 王长尧蒋明媚刘仲秋

【Author】 Wang Changyao Jiang Mingmei (Tianjin Institute of Geology and Mineral Resources) Liu Zhongqiu (Geological Institute, C.A.G.S.)

【机构】 天津地质矿产研究所中国地质科学院地质研究所

【摘要】 利用粒度分布特征是恢复砂和砂岩原始沉积环境的重要方法之一。根据维谢尔(Visher,1969)的理论及其确定的粒度分布的环境模式,本文对燕山地区中、上元古界砂岩的粒度分布数据进行计算机处理;用模糊聚类及欧氏距离等数学方法对不同层位样品粒度分布数据进行归类;同时选择已知环境样品,分别计算未知环境样品与已知环境样品的欧氏距离,探讨样品的原始沉积环境。

【Abstract】 The study of features of the grain size frequency distribution is one of the most important methods to recognize original sedimentary environments of sand and sandstone.Based on the relationship between the grain size frequency distribution and sedimentary environment of sandstone,G.S. Visher proposed a series normal probability model graphs.They have been applied to compare with the graphs of the unknown environment of samples, which can recognize the samples original sedimentary environment.However many complex factors should be considered as the normal probability graphs of the samples were compared with model graphs.

  • 【会议录名称】 中国地质科学院天津地质矿产研究所文集(23)
  • 【会议时间】1990-06-01
  • 【分类号】P512.2
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