| 东海陆架盆地下第三系高频层序分析 |
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| 引用本文： | 武法东,周平等. 东海陆架盆地下第三系高频层序分析[J]. 地质论评, 2001, 47(1): 47-52 |
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| 作者姓名： | 武法东 周平等 |
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| 作者单位： | 中国地质大学,北京,100083;上海海洋石油局规划设计研究院,200120 |
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| 基金项目： | 国家自然科学基金(编号49772123),国家重点科技攻关项目(编号96-110-06-02-01)资助成果 |
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| 摘 要： | 本文提出了进行高频层序分析的新思想和方法。根据米兰科维奇周期理论,利用自然伽玛测井曲线,采用傅立叶变换将曲线的量值域转换为频率域。分析每一个峰值频率的波长及其相互之间的比率关系,寻找那些波长比率与地史时期气候变化的旋回周期比率相同或相似的频率,从而捕获高频旋回信息。东海陆架盆地下第三系进一步细划出38个四级层序。利用捕获的米兰科维奇周期信息,进一步计算了高频层序沉积持续的时间和沉积速率。
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| 关 键 词： | 米兰科维奇周期 高频层序 频谱 下第三系 东海陆架盆地 |
Analysis of Paleogene High-Frequency Sequences in the East China Sea Shelf Basin |
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| WU Fadong,SU Xin,ZHOU Ping,LIU Jinshui,LI Peilian China University of Geosciences,Beijing,Shanghai Offshore Petroleum Planning and Designing Institute,Shanghai. Analysis of Paleogene High-Frequency Sequences in the East China Sea Shelf Basin[J]. Geological Review, 2001, 47(1): 47-52 |
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| Authors: | WU Fadong SU Xin ZHOU Ping LIU Jinshui LI Peilian China University of Geosciences Beijing Shanghai Offshore Petroleum Planning Designing Institute Shanghai |
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| Abstract: | This paper puts forward a new method for the analysis of high-frequency sequences. Based on the Mi-lankovitch Cycle and gamma-ray log, the quantitative field can be transformed into the frequency field of the log by the Fourier transform. The wavelength of every peak frequency and the ratios between these wavelengths are analyzed in order to find the frequencies whose wavelength ratios are the same as or similar to the cycles of the geological time. The Eocene is subdivided into 38 fourth-order sequences. Moreover, the persistent deposi-tional time and depositional rate of the high-frequency sequences are estimated based upon the information of the Milankovitch Cycle captured in the analysis. |
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| Keywords: | Milankovitch cycle high-frequency sequence spectrum Paleogene East China Sea shelf basin |
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