| 成家庄剖面本溪—太原组层序地层与元素地球化学特征分析 |
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| 引用本文： | 张敬霞,郭英海,沈玉林.成家庄剖面本溪—太原组层序地层与元素地球化学特征分析[J].中国煤炭地质,2011(3):1-4,23. |
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| 作者姓名： | 张敬霞 郭英海 沈玉林 |
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| 作者单位： | 中国矿业大学资源与地球科学学院,江苏徐州221008 |
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| 基金项目： | 江苏省普通高校研究生科研创新计划（CX10B-140Z） |
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| 摘 要： | 以山西柳林成家庄剖面本溪—太原组为例,对层序地层与元素地球化学的关系进行了研究。通过综合分析区域构造变动、岩性组合、微量元素特征、测井曲线、沉积相、化石组合特征,识别出区域不整合面、低水位期暴露面、水道下切谷、构造体制转换面、沉积体系转换面和古生物组合交替面等层序界面类型,据此将本溪组—太原组划分为2个Ⅱ级层序、8个Ⅲ级层序和17个体系域。该区层序特征以海侵体系域＋高位体系域的＂二元结构＂为主,元素地球化学特征与层序界面及层序内部体系域有良好的对应关系,其中Fe、Sr、Ba、REE、Mn/Fe等元素组合特征变化显著,说明元素地球化学特征可以作为划分层序及体系域的依据。
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| 关 键 词： | 本溪—太原组 层序地层 层序界面 微量元素 |
Chengjiazhuang Section Benxi-Taiyuan Formations Sequence Stratigraphy and Geochemistry of Element Analysis in Liulin,Shanxi |
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| Zhang Jingxia,Guo Yinghai and Shen Yulin.Chengjiazhuang Section Benxi-Taiyuan Formations Sequence Stratigraphy and Geochemistry of Element Analysis in Liulin,Shanxi[J].Coal Geology of China,2011(3):1-4,23. |
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| Authors: | Zhang Jingxia Guo Yinghai and Shen Yulin |
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| Institution: | (School of Resource and Geoscience,CUMT,Xuzhou,Jiangsu 221008) |
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| Abstract: | Taking the Chengjiazhuang section Benxi-Taiyuan formations in Liulin,Shanxi as an example,carried out study on relationship between sequence stratigraphy and geochemistry of element.Through comprehensive analysis of tectonic event,lithologic assemblage,microelement feature,logging trace,sedimentary facies and fossil assemblage,identify sequence interface types of regional unconformity surface,lowstand period exposed surface,channel incised valley,tectonic regime transistional surface,sedimentary system transitional surface and paleontological assemblage alternative surface.On these grounds,partition the Benxi-Taiyuan formations into 2 Grade II sequences,8 Grade III sequences and 17 systems tracts.The sequence features in the area are mainly ＂dualistic structure＂ of transgressive systems tract ＋ highstand systems tract;element geochemical features with sequence interface,sequence internal systems tracts have good corresponding relationship,in which,Fe,Sr,Ba,REE and Mn/Fe element association has remarkable changing characteristics,thus demonstrated that element geochemical features can be the basis to divide sequences and systems tracts. |
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| Keywords: | Benxi-Taiyuan formations sequence stratigraphy sequence interface microelement |
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