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yun nan mei shu cun po mian lin kuai yan di bu guo du ceng tan yang tong wei su yan jiu
Author(s): 
Pages: 62-68
Year: Issue:  Z1
Journal: Sedimentary Geology and Tethyan Geology

Keyword:  磷块岩梅树村中谊村段小歪头山段白云石过渡层沉积环境稳定同位素研究地质特征剖面;
Abstract: <正> 前言为了解梅树村剖面中谊村段底部白云质磷块岩与下伏小歪头山段含磷白云岩接触界面上下沉积环境及其演变,过去曾从宏观地质特征、岩石化学成分、微量元素、重砂矿物及生物化石等方面进行过综合研究。其成果表明,两岩性段界面上下呈渐变过渡关系,其沉积环境由潮间相向潮间—潮下高能相过渡。由于界面上下均为高能环境,二者间有时出现水下冲刷现象(罗惠麟等1982.1984)。本文试图通过碳、氧稳定同位素研究,获得更多信息。一、样品地质特征
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