安徽宿松地区中二叠统上升流沉积的发现及其岩相组合类型

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作者：肖传桃 ; 卢俊 ; 胡望水 ; 刘丰 ; 柴华 ; 焉菲 关键词：上升流沉积 ; 岩相组合 ; 中二叠统 ; 宿松地区 刊名：石油天然气学报 英文刊名：Journal of Oil and Gas Technology 出版日期：2008-12-15 出版单位：石油天然气学报 机构：长江大学"油气资源与勘探技术"教育部重点实验室; 年：2008 期：06 CN：42-1273/TE ISSN：1000-9752 页：37-41 页数：5 分类号：P618.13 语种：中文; 文件大小：583K

摘要

首次在安徽宿松地区中二叠统中发现古代上升流沉积典型实例。通过对上升流层序岩相的分析,将研究区上升流岩相划分为硅质团块、硅质条带、硅质细层、硅质结核、硅质岩、硅质泥岩和泥晶灰岩7种类型,并发现发育有上升流沉积典型层理——微细层理;根据不同上升流沉积层序中岩相的有规律的组合特征,将其岩相组合划分为2种类型,即陆棚缓坡相和陆棚盆地相组合;分析了上升流对生物古生态特征的控制作用,认为上升流的发育强度和生物群落的丰度成正相关,而与分异度多成负相关。
        

引文

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