| 东营凹陷牛庄地区沙三段层序地层分析 |
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| 作者单位： | 中国科学院广州地球化学研究所，中石化胜利油田有限公司地质科学研究院 |
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| 摘 要： | 山东济阳坳陷东营凹陷牛庄地区沙三段层序地层分析是在三级层序划分的基础上,通过对沉积体系发育特征和气候旋回单元的识别和解剖,建立了高精度层序地层单元的基本构型。气候旋回包含了从干旱枯水期到潮湿湖泛期的完整过程,沉积响应为受湖平面变化、沉积物供给等因素控制的多种方式叠置的湖底扇和前积体等,多期气候旋回叠合构成了湖泊层序的基本面貌。通过气候旋回的识别,可以对不同级别层序间的包含关系,以及高精度层序的内部构成进行分析和讨论。
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| 关 键 词： | 高精度层序地层 气候旋回 沙河街组 古近系 东营凹陷 山东 |
SEQUENCE STRATIGRAPHIC ANALYSIS OF THE MEMBER 3 OF SHAHEJIE FORMATION IN THE NIUZHUANG AREA OF THE DONGYING DEPRESSION |
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| Authors: | WANG Wei-qing LIU Ning and TIAN Fang Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou Geological Scientific Research Institute of Shengli Oilfield Company SINOPEC Dongying |
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| Institution: | WANG Wei-qing 1)2),LIU Ning 2) and TIAN Fang 2) 1) Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,510640, 2) Geological Scientific Research Institute of Shengli Oilfield Company,SINOPEC,Dongying,257015 |
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| Abstract: | The sequence stratigraphic analysis of the Member 3 of Shahejie Formation in the Niuzhuang area of the Dongying Depression is based on the three-order division of the sequence. Through the recognition and dissection of sedimentary system developmental features and climatic cycle units, a basic frame-work of the high-resolution sequence stratigraphic units is established. Climatic cycle includes a whole process from dry low-water season to wet lake flooding phase. Lake bottom fan and multiple genic foreword deposit sandbody controlled by variation of lake level and supply of sediments are the response to the deposition and multiple phase of climatic cycles resulted in a general aspect of the lake sequence. On the basis of recognizing the climatic cycles, an analysis and discussion may be conducted on the inclusion relation between the sequence of varying rangs and the internal structures of the high-resolution sequence. |
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| Keywords: | high-resolution sequence stratigraphy climatic cycle Shahejie Formation Paleogene Dong-ying Depression Shandong Province |
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