贵州宗地上石炭统达拉阶—下二叠统隆林阶的沉积微相组合及其沉积环境

贵州宗地上石炭统达拉阶—下二叠统隆林阶的沉积微相组合及其沉积环境

孔凡凡1，2，杨湘宁1

1.南京大学地球科学系，南京 210093；2.中国科学院南京地质古生物研究所，南京210008

收稿日期:2007-03-20 修回日期:2007-03-20 出版日期:2007-03-20 发布日期:2007-03-20

The Assemblages of Microfacies and the Sedimentary Environment of the Upper Carboniferous Dalaian to the Lower Permian Longlinian in the Zongdi Section, Guizhou Province

KONG Fanfan1,2, YANG Xiangning1

1. Department of Earth Sciences, Nanjing University, Nanjing, 210093, China 2. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China

Received:2007-03-20 Revised:2007-03-20 Online:2007-03-20 Published:2007-03-20

摘要/Abstract

摘要： 根据镜下薄片统计结果，参照野外观察，采用R型和Q型聚类分析方法对贵州省紫云县宗地乡上石炭统达拉阶—下二叠统隆林阶的沉积环境进行了研究。分析结果表明，贵州宗地达拉阶—隆林阶存在11种微相类型，分别为深水局限泻湖、浅水局限泻湖、深水藻丘、接近浅滩的洼地、台地边缘浅滩、深水泻湖、浅水藻丘、浅水泻湖或潮坪、潮汐砂坝、局限浅滩或泻湖和深水斜坡等环境的沉积。不同的微相类型在剖面纵向上构成了6个微相组合，代表了沉积环境依时间变化的6个基本过程：浅滩或潮坪—开阔台地—藻丘—局限台地—深水斜坡—局限藻丘。

Abstract: The cluster analysis method has been applied in a comprehensive study to investigate the sedimentary environment of the Upper Carboniferous Dalaian to the Lower Permian Longlinian of the Zongdi section, Guizhou Province, Southwest China, based on the statistic materials by microscope and referring to the observation in the field. Results of analyses show that there are 11 microfacies in the Zongdi section, namely, deep restricted lagoon, shallow restricted lagoon, deep alga mound, depression near shallow beach, shallow beach of platform margin, deep lagoon, shallow alga mound, shallow lagoon or tidal flat, tidal bar, restricted shallow beach or lagoon and deep slope. The assemblages and distribution patterns of the microfacies in the section demonstrate that the sedimentary environments during the Upper Carboniferous Dalaian to the Lower Permian Longlinian experienced 6 basic processes, namely, shallow beach, open platform, alga mound, restricted platform, deep slope and restricted mound.

孔凡凡,杨湘宁. 贵州宗地上石炭统达拉阶—下二叠统隆林阶的沉积微相组合及其沉积环境[J]. J4.

KONG Fanfan1,2, YANG Xiangning1. The Assemblages of Microfacies and the Sedimentary Environment of the Upper Carboniferous Dalaian to the Lower Permian Longlinian in the Zongdi Section, Guizhou Province[J]. J4.