| 豫西济源中三叠世油房庄组曲流河岩相类型及沉积相分析 |
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| 引用本文： | 齐永安,张洲,周敏,郑伟.豫西济源中三叠世油房庄组曲流河岩相类型及沉积相分析[J].沉积学报,2009,27(2):254-264. |
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| 作者姓名： | 齐永安 张洲 周敏 郑伟 |
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| 作者单位： | 河南理工大学资源环境学院 河南焦作 454000 |
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| 基金项目： | 国家自然科学基金，科技部重大基础研究专项，河南省高等学校创新人才基金联合资助 |
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| 摘 要： | 豫西济源中三叠世油房庄组下部发育曲流河沉积，以细砂、粉砂和粉砂质泥岩为主，局部含泥砾和粗砂岩。根据Miall的岩相分类法，油房庄组发育有17种岩相，主要有Sts、Sps、Sws、Fh、Fr、Fc、Ch和Cr等，可归纳为代表曲流河不同发展阶段的7种岩相组合类型。根据岩相类型和沉积构造特征，曲流河沉积识别出3个沉积亚相和8个沉积微相，其中河道亚相包括河道滞留沉积微相和边滩沉积微相；堤岸亚相包括天然堤沉积微相和决口扇沉积微相；洪泛平原亚相由近端洪泛平原沉积微相、远端洪泛平原沉积微相、永久性河漫湖泊微相和暂时性河漫湖泊微相组成。研究区河流曲率P为0.64，属于低弯度曲流河沉积。
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| 关 键 词： | 油房庄组 中三叠世 岩相 沉积相 曲流河沉积 |
| 收稿时间： | 1900-01-01 |
Lithofacies and Sedimentary Facies from Middle Triassic Fluvial Deposits of Youfangzhuang Formation,Jiyuan Area,Western Henan |
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| QI Yong-an,ZHANG Zhou,ZHOU Min,ZHENG Wei.Lithofacies and Sedimentary Facies from Middle Triassic Fluvial Deposits of Youfangzhuang Formation,Jiyuan Area,Western Henan[J].Acta Sedimentologica Sinica,2009,27(2):254-264. |
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| Authors: | QI Yong-an ZHANG Zhou ZHOU Min ZHENG Wei |
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| Institution: | Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, Henan 454000 |
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| Abstract: | The meandering fluvial deposits,preserved in Middle Triassic Youfangzhuang Formation of Jiyuan Area,western Henan,comprise mainly fine sandstone,siltstone and silty mudstone interbedded with conglomerate and coarse sandstone. According to Miall's lithofacies classification,seventeen lithofacies can be recognized from Youfangzhuang Formation,the main lithofacies are Sts,Sps,Sws,Fh,Fr,Fc,Ch and Cr,which can be aligned to seven lithofacies associations. Based on the features of lithofacies types and sedimentar... |
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| Keywords: | Youfangzhuang Formation Middle Triassic lithofacies sedimentary facies meandering fluvial deposits |
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