东海陆架盆地及其邻域岩浆岩时空分布特征
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摘要
基于二维地震资料和重磁资料的处理、解释,研究了东海陆架盆地及其邻域岩浆岩时空分布特征,并收集整理浙闽地区相关地质资料,将海陆连为一体进行综合解释。浙闽陆区岩浆岩非常发育,并且大致沿28°N为界,北侧岩浆岩大体呈NE向带状分布,南侧则呈NNE向带状分布,且埋深较浅,甚至在有些地区出露地表,其分布特征受区内大断裂的控制。综合地震、重磁资料研究认为,海域岩浆岩多分布在隆起部位或凹陷的边缘位置,发育情况与断裂的展布密切相关。收集整理了海域钻遇岩浆岩的15口钻井资料,沿自SW至NE一线,对岩浆岩的同位素年龄进行了统计分析,并结合其侵入关系对岩浆活动进行了期次和展布特征的划分,初步划分为4期:燕山期、四川期、华北期和喜马拉雅期;4带:浙闽隆起区、中部隆起区、钓鱼岛隆褶带和琉球岛弧带。
Two-dimensional seismic and gravity-magnetic data were processed and interpreted by the authors in order to study the temporal and spatial distribution of igneous rocks in the East China Sea Shelf Basin and its adjacent regions.Data from the land,mainly from Zhejiang and Fujian provinces were collected for the purpose of correlation.Igneous rocks are widely distributed in Zhejiang and Fujian.They occur in a NE trending to the north and NNE trending to the south of 28 N.They are shallowly buried and controlled mainly by major faults.The igneous rocks offshore are mainly distributed upon uplifts or along the fault boundaries of depressions.Temporally,the igneous rocks in the study area can be subdivided into four stages,i.e the Yanshan stage,Sichuan stage,Huabei stage and Himalayan stage and spatially occur in four zones,say the Zhe-Min uplifted zone,Central uplifted zone,Diaoyu Island folded uplifting zone and Ryukyu arc zone.
Two-dimensional seismic and gravity-magnetic data were processed and interpreted by the authors in order to study the temporal and spatial distribution of igneous rocks in the East China Sea Shelf Basin and its adjacent regions.Data from the land,mainly from Zhejiang and Fujian provinces were collected for the purpose of correlation.Igneous rocks are widely distributed in Zhejiang and Fujian.They occur in a NE trending to the north and NNE trending to the south of 28 N.They are shallowly buried and controlled mainly by major faults.The igneous rocks offshore are mainly distributed upon uplifts or along the fault boundaries of depressions.Temporally,the igneous rocks in the study area can be subdivided into four stages,i.e the Yanshan stage,Sichuan stage,Huabei stage and Himalayan stage and spatially occur in four zones,say the Zhe-Min uplifted zone,Central uplifted zone,Diaoyu Island folded uplifting zone and Ryukyu arc zone.
引文
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[22]孙文斌,和跃时.西太平洋Benioff带的形态及其应力状态[J].地球物理学报,2004,47(3):433-440.[SUN Wenbin,HE Yueshi.Characteristics of the subduction zone in theWestern Pacific and its stress state[J].Chinese Journal of Ge-ophysics,2004,47(3):433-440.]
[23]李学伦,刘保华,林振宏.东海陆架外缘隆褶带的形成与构造演化[J].海洋学报,1997,19(5):76-82.[LI Xuelun,LIU Baohua,LIN Zhenhong.Formation and tectonic evolu-tion of the outer margin up warped zone of the East China Seashelf[J].Acta Oceanologica Sinica,1997,19(5):76-82.]
[24]万天丰,赵庆乐.中国东部构造-岩浆作用的成因[J].中国科学:地球科学,2012,42(2):155-163.[WAN Tianfeng,ZHAOQingle.The genesis of tectono-magmatism in eastern China[J].Sci.China Earth Sci.,2010,55,doi:10.1007/s11430-011-4361-4.]
[2]许东禹,刘锡清,张训华.中国近海地质[M].北京:地质出版社,1997:12-18.[XU Dongyu,LIU Xiqing,ZHANG Xun-hua.The China Offshore Geology[M].Beijing:GeologicalPublishing House,1997:12-18.]
[3]刘金水,廖宗延,贾健谊,等.东海陆架盆地地质结构及构造演化[J].上海地质,2003(3):1-6.[LIU Jinshui,LIAO Zongy-an,JIA Jianyi,et al.The geological and tectonic evolution ofthe east China Sea shelf basin[J].Shanghai Geology,2003(3):1-6.]
[4]冯晓杰,蔡东升,王春修,等.东海陆架盆地中新生代构造演化特征[J].中国海上油气(地质),2003,17(1):33-37.[FENG Xiaojie,CAI Dongsheng,WANG Chunxiu,et al.TheMeso-Cenozoic tectonic evolution in East China Sea shelf basin[J].China Offshore Oil and Gas(Geology),2003,17(1):33-37.]
[5]谢家宝,陶奎元.中国东南大陆中生代火山岩地质及火山-侵入杂岩[M].北京:地质出版社,1996.[XIE Jiabao,TAOKuiyuan.Mesozoic Volcanics Geology and Volcano-intrusionComplex Rock of the Southern China[M].Beijing:GeologicalPublishing House,1996.]
[6]卢清地.福建东部、浙江西部地区中生代火山岩岩石地层划分与时代对比研究报告[M].福州:福建省地图出版社,2008.[LU Qingdi.Mesozoic Volcanic Rocks Stratigraphic Divisionand Time Correlation of the Eastern Fujian Province and West-ern Zhejiang Province[M].Fuzhou:Cartographic PublishingHouse of Fujian Province,2008.]
[7]李武显,周新民.中国东南部晚中生代俯冲带探索[J].高校地质学报,1999,5(2):164-169.[LI Wuxian,ZHOU Xinmin.Late Mesozoic subduction zone of southeastern China[J].Geo-logical Journal of China University,1999,5(2):164-169.]
[8]Zhou X M,Li W X.Origin of Late Mesozoic igneous rocks inSoutheastern China implications for lithosphere subduction andunderplating of mafic magmas[J].Tectonophysics,2000(326):269-287.
[9]毛建仁.中国东南大陆中、新生代岩浆作用与壳幔演化动力学[J].火山地质与矿产,1994,15(2):1-11.[MAO Jianren.Mesozoic-Cenozoic magmatism and crust-mantle evolution dy-namic of the Southern China[J].Volcanic Geology and Miner-al,1994,15(2):1-11.]
[10]徐夕生,谢昕.中国东南部晚中生代-新生代玄武岩与壳幔作用[J].高校地质学报,2005,11(3):318-334.[XU Xisheng,XIE Xin.Late Mesozoic-Cenozoic basalt and crust-mantle ac-tion of the Southern China[J].Geological Journal of ChinaUniversity,2005,11(3):318-334.]
[11]张训华.中国海域构造地质学[M].北京:海洋出版社,2008.[ZHANG Xunhua.The China Seas Tectonic Geology[M].Beijing:Ocean Press,2008.]
[12]沈然清,李上卿,谢仁海.东海盆地岩浆活动[M].北京:地质出版社,2001:60-69.[SHEN Ranqing,LI Shangqing,XIERenhai.Magmatic Activity of the East China Sea[M].Bei-jing:Geological Publishing House,2001:60-69.]
[13]杨文达,崔征科,张异彪.东海地质与矿产[M].北京:海洋出版社,2010.[YANG Wenda,CUI Zhengke,ZHANGYibiao.Geology and Mineral of the East China Sea[M].Bei-jing:Ocean Press,2010.]
[14]万天丰.中国东部中、新生代板内变形构造应力场及其应用[M].北京:地质出版社,1993.[WAN Tianfeng.The Meso-zoic-Cenozoic Intraplate Deformation Stress Field and Its Ap-plication in the Eastern China[M].Beijing:Geological Pub-lishing House,1993.]
[15]万天丰.中国大地构造学纲要[M].北京:地质出版社,2004.[WAN Tianfeng.China Tectonic Outline[M].Beijing:Geological Publishing House,2004.]
[16]李家彪.东海区域地质[M].北京:海洋出版社,2008.[LIJiabiao.Regional Gology of the East China Sea[M].Beijing:Ocean Press,2008.]
[17]许薇玲,乐俊英.东海海域块体的划分[J].海洋地质信息通报,1995(2):4-6.[XU Weiling,LE Junying.Blocks divisionof the East China Sea[J].Marine Geology Information Jour-nal,1995(2):4-6.]
[18]李桂群,李学伦.东海陆架外缘隆起带地质构造特征[J].青岛海洋大学学报,1995,25(2):199-205.[LI Guiqun,LIXuelun.Geological tectonic characteristics of the outer marginup warped zone of the East China Sea shelf[J].Journal ofOcean University of Qingdao,1995,25(2):199-205.]
[19]舒良树,周新民.中国东南部晚中生代构造作用[J].地质论评,2002,48(3):249-260.[SHU Liang,ZHOU Xinmin.Late Mesozoic tectonism of southeast China[J].GeologicalReview,2002,48(3):249-260.]
[20]郭令智,施央申,马瑞士.西太平洋中、新生代活动大陆边缘和岛弧构造的形成及演化[J].地质学报,1983(1):11-21.[GUO Lingzhi,SHI Yangshen,MA Ruishi.On the forma-tion and evolution of the Mesozoic-Cenozoic active continentalmargin and island arc tectonics of the Western Pacific Ocean[J].Acta Geologica Sinica,1983(1):11-21.]
[21]臧绍先,宁杰远.西太平洋俯冲带的研究及其动力学意义[J].地球物理学报,1996,39(2):188-202.[ZANG Shaox-ian,NING Jieyuan.Study on the subduction zone in WesternPacific and its implication for the geodynamics[J].Acta Geo-logica Sinica,1996,39(2):188-202.]
[22]孙文斌,和跃时.西太平洋Benioff带的形态及其应力状态[J].地球物理学报,2004,47(3):433-440.[SUN Wenbin,HE Yueshi.Characteristics of the subduction zone in theWestern Pacific and its stress state[J].Chinese Journal of Ge-ophysics,2004,47(3):433-440.]
[23]李学伦,刘保华,林振宏.东海陆架外缘隆褶带的形成与构造演化[J].海洋学报,1997,19(5):76-82.[LI Xuelun,LIU Baohua,LIN Zhenhong.Formation and tectonic evolu-tion of the outer margin up warped zone of the East China Seashelf[J].Acta Oceanologica Sinica,1997,19(5):76-82.]
[24]万天丰,赵庆乐.中国东部构造-岩浆作用的成因[J].中国科学:地球科学,2012,42(2):155-163.[WAN Tianfeng,ZHAOQingle.The genesis of tectono-magmatism in eastern China[J].Sci.China Earth Sci.,2010,55,doi:10.1007/s11430-011-4361-4.]
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