基于米氏旋回理论的高频层序识别与划分——以东海陆架盆地平湖斜坡带宝云亭地区平三段为例
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摘要
地球轨道周期性的变化控制着气候周期性变化,进而对层序叠加样式也会产生重要的影响。东海陆架盆地平湖组沉积时期经历了冷热交替的气候变化,这种气候变化的频繁波动必然会在相应的沉积物中有所记录。利用La(2004)计算方案计算北纬30°、30～40.4Ma期间地球轨道参数变化周期,确定该沉积时期理论米氏旋回周期比值;平湖斜坡带平湖组三段属于海相沉积,构造活动较弱,沉积稳定,物性相近,区域上分布广泛,因此以平湖组三段作为目的层,对该段伽马测井数据进行频谱检测以及一维连续小波变换,分析结果显示不同钻井中平三段沉积地层主要受405ka的长偏心率,131、99ka的短偏心率以及52ka的斜率周期所控制;选择控制平三段地层发育的主要米兰科维奇周期曲线,建立高分辨率天文年代标尺,进而对平三段地层进行高频层序划分,为平湖斜坡带高频层序单元对比框架的建立提供了一种新的有效方法。
Cyclical changes of climate owe its origin to cyclical changes in Earth orbit, which in turn have an effective impact on the pattern of stratigraphic sequence. During the depositional period of the Pinghu Formation, the East China Sea Continental Shelf Basin had suffered from a cold-hot alternating climate, as the records of sedimentation suggest. In this paper, we calculated the time of the variation of earth orbit parameters at the north latitude of 30°, during the time from 30～40.4 Ma using the La(2004) calculation method to determine the theoretical time span of Milakovitch cycles. The 3 rd Member of Pinghu Formation of the Pinghu Slope Belt is the marine sediments characterized by weak tectonic activity, stable sedimentation, similar physical properties and wide coverage. Therefore, it is selected from among others as the target layer to detect the spectrum of gamma data and analyze the one-dimensional continuous wavelet transform. Our results show that the 3 rd Member of Pinghu Formation is dominated by eccentricity cycles of 405 ka、131 ka、99 ka and a slope cycle of 52 ka. A high-resolution astronomical timescale is then established according to the cyclicity of the Milakovitch cycle curve. Upon the basis, the sequence stratigraphy of high-frequency cycle in the 3 rd Member of Pinghu Formation is constructed. Facts prove that the case provides a new effective approach for stratigraphic division and correlation in the Baoyunting area of the Pinghu Slope Zone.
Cyclical changes of climate owe its origin to cyclical changes in Earth orbit, which in turn have an effective impact on the pattern of stratigraphic sequence. During the depositional period of the Pinghu Formation, the East China Sea Continental Shelf Basin had suffered from a cold-hot alternating climate, as the records of sedimentation suggest. In this paper, we calculated the time of the variation of earth orbit parameters at the north latitude of 30°, during the time from 30～40.4 Ma using the La(2004) calculation method to determine the theoretical time span of Milakovitch cycles. The 3 rd Member of Pinghu Formation of the Pinghu Slope Belt is the marine sediments characterized by weak tectonic activity, stable sedimentation, similar physical properties and wide coverage. Therefore, it is selected from among others as the target layer to detect the spectrum of gamma data and analyze the one-dimensional continuous wavelet transform. Our results show that the 3 rd Member of Pinghu Formation is dominated by eccentricity cycles of 405 ka、131 ka、99 ka and a slope cycle of 52 ka. A high-resolution astronomical timescale is then established according to the cyclicity of the Milakovitch cycle curve. Upon the basis, the sequence stratigraphy of high-frequency cycle in the 3 rd Member of Pinghu Formation is constructed. Facts prove that the case provides a new effective approach for stratigraphic division and correlation in the Baoyunting area of the Pinghu Slope Zone.
引文
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[6] 毛凯楠,解习农,徐伟,等.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[J].石油实验地质,2013,34(6):641-647.[MAO Kainan,XIE Xinong,XU Wei,et al.Identification and division of high-frequency cycles based on Milakovitch theory:A case study on Miocene Sanya and Meishan Formations in Qiongdongnan Basin[J].Petroleum Experimental Geology,2013,34(6):641-647.]
[7] 袁学旭,郭英海,赵志刚,等.以米氏旋回为标尺进行测井层序划分对比——以东海西湖凹陷古近-新近系地层为例[J].中国矿业大学学报,2013,42(5):766-773.[YUAN Xuexu,GUO Yinghai,ZHAO Zhigang,et al.Sequence division and comparison based on Milakovitch cycle:a case study on the Paleogene-Neogene strata in the Xihu sag of the East China Sea[J],Journal of China University of Mining and Technology,2013,42(5):766-773.]
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[11] Giles P S.Time series analysis and cyclostratigraphy:Examining Stratigraphic records of environmental cycles.[J].Geological Association of Canada,2006,:33(1):43-127.
[12] Christopher Torrence,Gilbert P.Compo.A practical guide to wavelet analysis[C]// Bull.Am.Met.Soc.1998:61-78.
[13] Ruddiman W F.Earth's climate:past and future[J].Eos Transactions American Geophysical Union,2008,82(47):576-576.
[14] 郑兴平,罗平.川东渝北飞仙关组的米兰克维奇周期及其应用[J].天然气勘探与开发,2004,27(1):16-19.[ZHEN Xing ping,LUO Ping.The Milankovitch cycle of Feixianguan Formation in Northern Sichuan and its applications[J].Exploration and Development of Natural Gas,2004,27(1):16-19.]
[15] 李培廉,盛蔚.米氏旋回在平湖油气田高分辨率层序地层分析中的应用[J].中国海上油气(地质),1994(3):171-177.[LI Peilian,SHENG Wei.Application of Milankovich cycle in high-resolution sequence stratigraphy analysis of Pinghu oil and gas field[J].Offshore Oil and Gas in China(Geology),1994(3):171-177.]
[16] Christopher Torrence,Gilbert P.Compo.A practical guide to wavelet analysis[C]// Bull.Am.Met.Soc.1998:61-78.
[17] 高迪,郭变青,邵龙义,等.基于MATLAB的小波变换在沉积旋回研究中的应用[J].物探化探计算技术,2012,34(4):444-448.[GAO Di,GUO Bianqing,SHAO Longyi,et al.[ Application of wavelet transform based on MATLAB in the study of sedimentary cycles[J].Geophysical and Geochemical Exploration Computing Technology,2012,34(4):444-448.]
[18] 黄维婷.多尺度小波分析及其在测井曲线自动分层中的应用研究[D].成都理工大学,2012.[HUANG Weiting.Multiscale Wavelet Analysis and Its Application in Logging Curve Automatic Stratification[D].Chengdu University of Technology,2012.]
[19] 赵军龙,谭成仟,李娜,等.小波分析在高分辨率层序地层研究中的应用[J].地球科学与环境学报,2007,29(1):90-94.[ZHAO Junlong,TAN Chengqian,LI Na,et al.Application of wavelet analysis in high resolution sequence stratigraphy research[J].Journal of Geoscience and Environment,2007,29(1):90-94.]
[20] 田军,汪品先,成鑫荣,等.南海ODP1143站上新世至更新世天文年代标尺的建立[J].地球科学:中国地质大学学报,2005,30(1):31-39.[TIAN Jun,WANG Pinxian,CHENG Xinrong,et al.Establishment of Plio-Pleistocene astronomical year scale from ODP1143 Station in the South China Sea[J].Earth Science:Journal of China University of Geosciences,2005,30(1):31-39.]
[21] 吴怀春,张世红,黄清华.中国东北松辽盆地晚白垩世青山口组浮动天文年代标尺的建立[J].地学前缘,2008,15(4):159-169.[WU Huai chun,ZHAGN Shihong,HUANG Qinghua.Establishment of the floating astronomical scale of the Late Cretaceous Qingshankou Formation in Songliao Basin,Northeast China[J].Earth Science Frontiers,2008,15(4):159-169.]
[22] 郑民,彭更新,雷刚林,等.频谱分析法确定乌什凹陷白垩系米氏沉积旋回及沉积速率[J].新疆石油地质,2007,28(2):170-174.[ZHEN Min,PENG Genxin,LEI Ganglin,et al.Spectral analysis determination of Milankovich cycle and deposition rate of the cretaceous in Wushi Sag[J].Xinjiang Petroleum Geology,2007,28(2):170-174.]
[2] Osleger D.Subtidal carbonate cycles:Implications for allocyclic vs.autocyclic controls[J].Geology,1991,19(9):917-920.
[3] 付文钊,余继峰,杨锋杰,等.测井记录中米氏旋回信息提取及其沉积学意义——以济阳坳陷区为例[J].中国矿业大学学报,2013,42(6):1025-1032.[FU Wenzhao,YU Jifeng,YANG Fengjie,et al.Extraction of Milakovitch cycle information in logging data and sedimentological significance:a case study on Jiyang depression[J].Journal of China University of Mining and Technology,2013,42(6):1025-1032.]
[4] 马飞宙,余继峰,鲁静,等.测井数据小波变换在层序地层分析中的应用研究[J].中国煤炭地质,2007,19(4):70-73.[MA Feizhou,YU Jifeng,LU Jing,et al.Application of logging data wavelet transform in sequence stratigraphic analysis[J].Coal Geology of China,2007,19(4):70-73.]
[5] 姚益民,徐道一,李保利,等.东营凹陷牛38井沙三段高分辨率旋回地层研究[J].地层学杂志,2007,31(3):229-239.[YAO Yimin,XU Daoyi,LI Baoli,et al.Study on the high-resolution cycling strata in the Third Member of Shahejie Formation of Well niu 38 in Dongying Depression[J].Journal of Stratigraphy,2007,31(3):229-239.]
[6] 毛凯楠,解习农,徐伟,等.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[J].石油实验地质,2013,34(6):641-647.[MAO Kainan,XIE Xinong,XU Wei,et al.Identification and division of high-frequency cycles based on Milakovitch theory:A case study on Miocene Sanya and Meishan Formations in Qiongdongnan Basin[J].Petroleum Experimental Geology,2013,34(6):641-647.]
[7] 袁学旭,郭英海,赵志刚,等.以米氏旋回为标尺进行测井层序划分对比——以东海西湖凹陷古近-新近系地层为例[J].中国矿业大学学报,2013,42(5):766-773.[YUAN Xuexu,GUO Yinghai,ZHAO Zhigang,et al.Sequence division and comparison based on Milakovitch cycle:a case study on the Paleogene-Neogene strata in the Xihu sag of the East China Sea[J],Journal of China University of Mining and Technology,2013,42(5):766-773.]
[8] 徐伟.东营凹陷沙河街组三段、四段高频旋回识别及其地质意义[D].中国地质大学(武汉),2011.[XU Wei.High Frequency Cycle Identification and Its Geological Significance in the 3rd and 4th Member of Shahejie Formation in Dongying Depression[D].China University of Geosciences (Wuhan),2011.]
[9] 薛年喜.MATLAB在数字信号处理中的应用[M].清华大学出版社,2008.[XUE Nianxi.Application of MATLAB in Digital Signal Processing[M].Tsinghua University Press,2008.]
[10] 赵宗举,陈轩,潘懋,等.塔里木盆地塔中—巴楚地区上奥陶统良里塔格组米兰科维奇旋回性沉积记录研究[J].地质学报,2010,84(4):518-536.[ZHAO Zongju,CHEN Xuan,FAN Mao,et al.Study on the cyclvial sedimentary records of the Lianglitage Formation of the Upper Ordovician in the Tazhong-Bachu Area,Tarim Basin[J].Geological Journal,2010,84(4):518-536.]
[11] Giles P S.Time series analysis and cyclostratigraphy:Examining Stratigraphic records of environmental cycles.[J].Geological Association of Canada,2006,:33(1):43-127.
[12] Christopher Torrence,Gilbert P.Compo.A practical guide to wavelet analysis[C]// Bull.Am.Met.Soc.1998:61-78.
[13] Ruddiman W F.Earth's climate:past and future[J].Eos Transactions American Geophysical Union,2008,82(47):576-576.
[14] 郑兴平,罗平.川东渝北飞仙关组的米兰克维奇周期及其应用[J].天然气勘探与开发,2004,27(1):16-19.[ZHEN Xing ping,LUO Ping.The Milankovitch cycle of Feixianguan Formation in Northern Sichuan and its applications[J].Exploration and Development of Natural Gas,2004,27(1):16-19.]
[15] 李培廉,盛蔚.米氏旋回在平湖油气田高分辨率层序地层分析中的应用[J].中国海上油气(地质),1994(3):171-177.[LI Peilian,SHENG Wei.Application of Milankovich cycle in high-resolution sequence stratigraphy analysis of Pinghu oil and gas field[J].Offshore Oil and Gas in China(Geology),1994(3):171-177.]
[16] Christopher Torrence,Gilbert P.Compo.A practical guide to wavelet analysis[C]// Bull.Am.Met.Soc.1998:61-78.
[17] 高迪,郭变青,邵龙义,等.基于MATLAB的小波变换在沉积旋回研究中的应用[J].物探化探计算技术,2012,34(4):444-448.[GAO Di,GUO Bianqing,SHAO Longyi,et al.[ Application of wavelet transform based on MATLAB in the study of sedimentary cycles[J].Geophysical and Geochemical Exploration Computing Technology,2012,34(4):444-448.]
[18] 黄维婷.多尺度小波分析及其在测井曲线自动分层中的应用研究[D].成都理工大学,2012.[HUANG Weiting.Multiscale Wavelet Analysis and Its Application in Logging Curve Automatic Stratification[D].Chengdu University of Technology,2012.]
[19] 赵军龙,谭成仟,李娜,等.小波分析在高分辨率层序地层研究中的应用[J].地球科学与环境学报,2007,29(1):90-94.[ZHAO Junlong,TAN Chengqian,LI Na,et al.Application of wavelet analysis in high resolution sequence stratigraphy research[J].Journal of Geoscience and Environment,2007,29(1):90-94.]
[20] 田军,汪品先,成鑫荣,等.南海ODP1143站上新世至更新世天文年代标尺的建立[J].地球科学:中国地质大学学报,2005,30(1):31-39.[TIAN Jun,WANG Pinxian,CHENG Xinrong,et al.Establishment of Plio-Pleistocene astronomical year scale from ODP1143 Station in the South China Sea[J].Earth Science:Journal of China University of Geosciences,2005,30(1):31-39.]
[21] 吴怀春,张世红,黄清华.中国东北松辽盆地晚白垩世青山口组浮动天文年代标尺的建立[J].地学前缘,2008,15(4):159-169.[WU Huai chun,ZHAGN Shihong,HUANG Qinghua.Establishment of the floating astronomical scale of the Late Cretaceous Qingshankou Formation in Songliao Basin,Northeast China[J].Earth Science Frontiers,2008,15(4):159-169.]
[22] 郑民,彭更新,雷刚林,等.频谱分析法确定乌什凹陷白垩系米氏沉积旋回及沉积速率[J].新疆石油地质,2007,28(2):170-174.[ZHEN Min,PENG Genxin,LEI Ganglin,et al.Spectral analysis determination of Milankovich cycle and deposition rate of the cretaceous in Wushi Sag[J].Xinjiang Petroleum Geology,2007,28(2):170-174.]
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