| 河南留山盆地上三叠统沉积粒度分析 |
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| 引用本文： | 曹高社,杨启浩,林玉祥,邢娜娜,俎新许,徐光明.河南留山盆地上三叠统沉积粒度分析[J].沉积与特提斯地质,2009,29(3):9-14. |
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| 作者姓名： | 曹高社 杨启浩 林玉祥 邢娜娜 俎新许 徐光明 |
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| 作者单位： | 1. 河南理工大学资源环境学院,河南焦作,454003
2. 山东科学技术大学地球信息科学与工程学院,山东青岛,266510 |
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| 基金项目： | 中石化重大前瞻性项目"华北西南部晚三叠世-新近纪岩相古地理研究与编图(CW800-07-2s-165-01)"和河南理工大学博士基金 |
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| 摘 要： | 通过留山盆地上三叠统概率累积曲线、粒度参数和C-M图解等分析,沉积物粒度特征主要反映了扇三角洲泥石流、水下分流河道和河口坝沉积。下部太山庙组显示了水流由强至弱,搬运能力逐渐减小的过程;上部太子山组显示出水流不稳,流速交替多变的特点。粒度特征也显示了紊流作用的强烈影响,而紊流作用的产生可能与快速水流以及较高的悬浮颗粒含量有关。
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| 关 键 词： | 留山盆地 上三叠统 沉积环境 粒度分析 |
Grain size analysis of the Upper Triassic deposits in the Liushan Basin,Henan |
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| CAO Gao-she,YANG Qi-hao,LIN Yu-xiang,XING Nan,ZU Xin-xu,XU Guang-ming.Grain size analysis of the Upper Triassic deposits in the Liushan Basin,Henan[J].Sedimentary Geology and Tethyan Geology,2009,29(3):9-14. |
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| Authors: | CAO Gao-she YANG Qi-hao LIN Yu-xiang XING Nan ZU Xin-xu XU Guang-ming |
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| Institution: | 1 (1.School of Resources and Environment Engineering; Henan Polytechnic University; Jiaozuo 454003; Henan; China; 2.College of Geo-info Science and Engineering; Shandong University of Science and Technology; Qingdao 266510; Shandong; China); |
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| Abstract: | Judged from grain size probability accumulative curves,grain size parameters and C-M patterns,the Upper Triassic deposits in the Liushan Basin are built up of the fan delta debris flow deposits,subaqueous distributary channel deposits and channel-mouth bar deposits.The Taishanmiao Formation in the lower part displays the evolution from the stronger flow to the weaker flow,while the Taizishan Formation in the upper part is characterized by unstable currents and varying flow velocity.The grain size parameters... |
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| Keywords: | Liushan Basin Upper Triassic sedimentary environment grain size analysis |
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