| Geometric and Dynamical Characteristics of Sequences in Yitong Graben |
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| 作者姓名： | Xie Xinong Sun Yongchuan |
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| 作者单位： | Xie Xinong; Sun Yongchuan(Deparment of Mineral Resources，China University of Geosciences，Wuhan430074)Ding Zhengyan; Lin Yanzong(Jinn Oilfield Administrative Bureau，Fuyu 131200) |
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| 摘 要： | ＧｅｏｍｅｔｒｉｃａｎｄＤｙｎａｍｉｃａｌＣｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆＳｅｑｕｅｎｃｅｓｉｎＹｉｔｏｎｇＧｒａｂｅｎ￥ＸｉｅＸｉｎｏｎｇ；ＳｕｎＹｏｎｇｃｈｕａｎ（ＤｅｐａｒｍｅｎｔｏｆＭｉｎｅｒａｌＲｅｓｏｕｒｃｅｓ，ＣｈｉｎａＵｎｉｖｅｒｓ...
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Geometric and Dynamical Characteristics of Sequences in Yitong Graben |
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| Xie Xinong, Sun Yongchuan.Geometric and Dynamical Characteristics of Sequences in Yitong Graben[J].Journal of China University of Geosciences,1994(1). |
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| Authors: | Xie Xinong Sun Yongchuan |
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| Abstract: | Yitong graben belongs to the north segment of the Tanlu fault belt .It was infilled with Eogene, Neogene and Quaternary clastic deposits, each Of them represents a distinct tectonic sequence.Six types of systems association characteristics of distinct depositional systems and spatial disposition are identified in different evolutionary period of the graben.Sequence Stratigraphic framework of the graben is mainly controlled by structural framework,tectonic movement, sources supply, expanding and contracting cycle of lake, position of depositional center. The key factors are structural framework and tectonic movemeat.Through systematic analysis Of regional tectonic settings, it is recognized that Eogene tectonic sequence of Yitong graben was formed under tenso-shear regime. It includes four sequences indicating four tectonic events attributed to tectonic movement of marginal faults.Neogene tectonic sequence was formed under compresso-shear regime, which includes coarse clastic deposits with a thicknessof 0-500m.Pattern of in the Yitong graben indicates the asymmetrical subsisence of marginal faults along two sides and the complicated structural framework. |
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| Keywords: | SeqUence stratigraphy sequence stratigraphic framework geometry of sequence dynamics Of sequence Yitong graben |
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