新疆塔中地区奥陶系地层划分与岩性研究STRATIGRAPHIC DIVISION AND LITHOSTRATIGRAPHIC CHARACTERIZATION OF THE ORDOVICIAN SYSTEM IN THE TAZHONG AREA OF THE TARIM BASIN
刘春晓,杨小波,钱利
摘要(Abstract)：
新疆塔中地区奥陶系分布广泛。主要根据化石、岩性特征、对比等将研究区内奥陶系划分为三统四组:下奥陶统蓬莱坝组与下伏上寒武统丘里塔格下亚群呈假整合接触,鹰山组归为中下奥陶统,一间房组划为中奥陶统,良里塔格组划归上奥陶统。良里塔格组可细分为3个岩性段,鹰山组可划分为4个岩性段。良里塔格组与鹰山组之间存在区域地层缺失和不整合,桑塔木组与上覆地层呈不整合接触,与下伏良里塔格组由于所处的位置不同呈整合或不整合接触。
关键词(KeyWords)： 地层划分;鹰山组;蓬莱坝组;良里塔格组;桑塔木组;奥陶系;塔里木盆地;新疆
基金项目(Foundation):
作者(Author): 刘春晓,杨小波,钱利
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