| 银额盆地及邻区石炭纪小独山期—二叠纪紫松期岩相古地理 |
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| 引用本文： | 史冀忠,陈高潮,姜亭,魏建设,牛亚卓.银额盆地及邻区石炭纪小独山期—二叠纪紫松期岩相古地理[J].地质通报,2018,37(1):107-119. |
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| 作者姓名： | 史冀忠 陈高潮 姜亭 魏建设 牛亚卓 |
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| 作者单位： | 中国地质调查局西安地质调查中心, 陕西 西安 710054 |
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| 基金项目： | 中国地质调查局项目《银额盆地及周缘油气基础地质调查》（编号：DD20160172）、《银额盆地上古生界油气战略选区调查》（编号：DD20160200）和国家自然科学基金项目《甘蒙北山黑鹰山地区晚石炭世沉积盆地性质分析》（批准号：41402097） |
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| 摘 要： | 采用野外地质调查与室内研究相结合的方法,根据野外地质调查收集的沉积岩岩石学特征、古生物及沉积构造标志,结合室内地球化学分析测试结果,总结研究区的沉积相划分标志,将研究区石炭系—二叠系阿木山组(干泉组)划分出6种沉积相,即辫状河三角洲相、冲积扇相、滨海相、碳酸盐岩台地相、浅海陆棚相和海相火山岩相,并进一步划分为13种沉积亚相。浅海陆棚相和滨海相是研究区沉积的主体,碳酸盐岩台地相次之,辫状河三角洲相和冲积扇相仅在靠近敦煌-阿拉善-狼山古陆及马鬃山-拐子湖中间隆起带的部分有分布,海相火山岩主要分布于裂谷中心火山喷发带。
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| 关 键 词： | 银额盆地及邻区 小独山期—紫松期 阿木山组 干泉组 岩相古地理 |
| 收稿时间： | 2017/9/15 0:00:00 |
| 修稿时间： | 2017/11/3 0:00:00 |
Lithofacies palaeogeography of Carboniferous Xiaodushanian-Permian Zisongian Stage in Yingen-Ejin basin and its adjacent areas |
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| SHI Jizhong,CHEN Gaochao,JIANG Ting,WEI Jianshe and NIU Yazhuo.Lithofacies palaeogeography of Carboniferous Xiaodushanian-Permian Zisongian Stage in Yingen-Ejin basin and its adjacent areas[J].Geologcal Bulletin OF China,2018,37(1):107-119. |
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| Authors: | SHI Jizhong CHEN Gaochao JIANG Ting WEI Jianshe and NIU Yazhuo |
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| Institution: | Xi''an China Geological Survey Center, China Geological Survey, Xi''an 710054, Shaanxi, China |
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| Abstract: | Based on field geological research and laboratory study using a combination of methods, collected sedimentary petrologic characteristics, palaeontologic marker and sedimentary structures in the field investigation,in combination with results of geochemical analysis, the authors summarized sedimentary facies signs in the study area. The Carboniferous-Permian Amushan Formation(Ganquan Formation)in the study area was divided into six kinds of sedimentary facies, namely braided river delta, alluvial fan, offshore, carbonate platform facies, shallow continental shelf and marine volcanic facies,which were further divided into thirteen kinds of sedimentary subfacies, in which shallow continental shelf and offshore is the main area of the deposition, followed by carbonate platform facies, whereas braided river delta and alluvial fan are distributed only near the Dunhuang-Alxa-Langshan ancient land and Mazongshan-Guaizihu uplift zone, and marine volcanic rocks mainly occur at the center of the rift valley. |
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| Keywords: | Yingen-Ejin basin and its adjacent areas Xiaodushanian-Zisongian stage Amushan Formation Ganquan Formation lithofacies palaeogeography |
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