基于米兰科维奇理论的高频旋回识别与划分——以琼东南盆地梅山组和三亚组地层为例

毛凯楠; 解习农; 徐伟; 康波

doi:10.11781/sysydz201206641

基于米兰科维奇理论的高频旋回识别与划分——以琼东南盆地梅山组和三亚组地层为例

doi: 10.11781/sysydz201206641

1.
中国地质大学(武汉)构造与油气资源教育部重点实验室, 武汉, 430074
2. 中海油研究总院, 北京, 100027

基金项目: 国家自然科学基金重点项目(91028009);教育部博士点基金(20100145110002);国家重大油气专项(2011ZX05025-002-02-04)联合资助

详细信息

作者简介:
毛凯楠(1987- )男,在读硕士,从事层序地层学、沉积学研究.E-mail:maokn1207@163.com

中图分类号: TE122.1⁺2
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- 被引次数: 0
出版历程
- 收稿日期: 2012-03-26
- 修回日期: 2012-09-20
- 刊出日期: 2012-11-28

Identification and division of high-frequency cycles based on Milakovitch theory：A case study on Miocene Sanya and Meishan Formations in Qiongdongnan Basin

1.
Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan, Hubei 430074, China
2. CNOOC Research Institute, Beijing 100027, China

摘要

摘要: 选择琼东南盆地不同构造带上的LS-33A、YC-35B和ST-36A3口钻井为研究对象,对自然伽马数据进行频谱分析和连续小波变换,结果显示在不同钻井中,新近系梅山组和三亚组地层都主要受404ka和95ka偏心率周期控制。对该周期滤波分析后,选择控制各层段发育的主要米兰科维奇周期曲线,建立了各段地层的高分辨率天文年代标尺。最后,以短偏心率周期曲线作为五级层序划分的参考曲线,对三亚组和梅山组层序进行高频旋回地层划分与对比。该研究成果为近海海域盆地高频层序单元对比框架的建立提供了一种新的有效方法。
- 米兰科维奇旋回 /
- 频谱分析 /
- 小波分析 /
- 天文标尺 /
- 新近系 /
- 琼东南盆地
Abstract: Natural gamma data from the wells LS-33A,YC-35B and ST-36A in different structures of the Qiongdongnan Basin have been used for spectral analysis and continuous wavelet transform.In different wells,the Miocene Sanya and Meishan Formations are mainly dominated by the 404 ka and 95 ka eccentricity cycles.A high-resolution astronomical timescale of each formation is established based on the analysis of cycle filter and Milankovitch cycle curve which controls strata development.Finally,the sequence stratigraphy of high-frequency cycles in the Sanya and Meishan Formations is divided and correlated by using short eccentricity cycle curve as the reference curve for the fifth-order sequence units.The investigation provides a new effective approach to build the correlating framework of high-resolution sequence in the offshore basins.
- Milankovitch cycles /
- spectral analysis /
- wavelet analysis /
- astronomical time scale /
- Miocene /
- Qiongdongnan Basin

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