| 彬长地区延安组层序地层划分 |
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| 引用本文： | 林文姬,;汤达祯,;徐凤银,;许浩,;刘艳红.彬长地区延安组层序地层划分[J].中国煤炭地质,2009(10):5-8. |
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| 作者姓名： | 林文姬 ;汤达祯 ;徐凤银 ;许浩 ;刘艳红 |
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| 作者单位： | [1]中联煤层气国家工程研究中心有限责任公司,北京100011; [2]中国地质大学能源学院,北京100083; [3]中石油煤层气有限责任公司,北京100011; [4]中国石油杭州地质研究院,浙江杭州310023 |
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| 基金项目： | 国家重点基础研究发展计划（973）项目子项目“煤层气有利储层及其形成机理研究”（编号：2002CD211702）资助. |
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| 摘 要： | 从地层界线、沉积旋回、标志层、测井曲线特征等方面进行对比分析，确定了彬长地区延安组三段地层与鄂尔多斯盆地五段地层的对应关系。在此基础上，利用层序地层学原理，将彬长地区延安组分为一个三级层序，进一步划分为3个小层序组，其中三级层序仅由2个体系域（初始充填体系域和超覆充填体系域）组成，表明彬长地区延安组只在盆地形成和发展时期接受沉积．缺失盆地萎缩时期的沉积。
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| 关 键 词： | 延安组 层序地层 彬长地区 |
Sequence Stratigraphic Division of Jurassic Yanan Formation in Binchang Area |
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| Institution: | LIN Wenji, TANG Dazhen, XU Fengyin,XU Hao,LIU Yanhong (1.China United Coatbed Methane National Engineering Research Center Corporation Limited, Beijing 100011, China;2.School of Energy Resources, China University of Geosciences, Beijing 100083, China;3.PetroChina Coalbed Methane Corporation Limited, Beijing 100011, China ; 4.PetroChina Hangzhou Geological Institute, Hangzhou, Zhejiang, 310023, China) |
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| Abstract: | From contrastive analysis of strata boundaries, sedimentary cycles, marker beds, logging traces, have determined boundaries of three members of the Yanan Formation in the Binchang area and correspondence with five members of Yanan Formation in the Ordos Basin. On this basis, to use principles of sequence stratigraphy, divided Jurassic Yanan Formation in Binchang area into one third-order sequence and further divided the sequence into 3 parasequence sets, in which, the third-order sequence is only consist of 2 systems tracts （initial and onlap infilling systems tracts）, demonstrated that Yanan Formation in Binchang area received deposits only during the basin forming and development stages, and hiatus during the basin declining stage. |
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| Keywords: | Yanan Formation sequence stratigraphy Binchang area |
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