三水盆地中渐新世火山记录的新建与南海扩张
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摘要
三水盆地是南海北部邻区陆域唯一具有新生代火山活动记录的盆地,最晚一期火山喷发时间是38Ma,也是南海北部陆域已知的在南海扩张之前最晚的火山喷发年代。应用K-Ar同位素年代测定方法,首次发现三水盆地存在29.27±1.52Ma的玄武岩和28.25±1.14Ma的流纹岩,构造判别图解指示其产出环境是板内拉张,与盆地之前火山类型一致,为双峰式火山岩,玄武岩具有与洋岛玄武岩相似的地球化学特征,流纹岩具有与A型花岗岩相似的地球化学特征,且玄武岩与流纹岩均与其他地区地幔柱成因火山岩具有相似的地球化学特征。这一代表板内破裂的双峰式火山记录将南海北部陆缘的火山喷发活动从早先已知的古新世—中始新世延续至渐新世中期,众所周知,南海的开裂起始时间约在32Ma,对于南海扩张期间周边陆域是否存在相关联的火山活动及建立南海早期开裂模式具有重要意义。
Sanshui Basin is the only basin that has Cenozoic volcanic records in the northern adjacent land area of the South China Sea, and the age of the last volcanic eruption in this basin is 38 Ma. This age is also the last eruption age before the South China Sea spreading in its northern land. Based on the K-Ar isotope dating method, the basalts(29.27±1.52 Ma) and rhyolite(28.25 ± 1.14 Ma)were first found in Sanshui Basin. This bimodal volcanic rock that represents intraplate rifting tectonic setting postponed the volcanic records from Palaeocene-Middle Eocene to Mid-Oligocene. As we all know, the initial age of the South China Sea spreading is about 32 Ma. So, it has great significance to answer if there is the relationship between the South China Sea spreading and its surrounding land volcanic activity. Meanwhile, the findings have important significance for establishing early spreading evolution model of the South China Sea.
Sanshui Basin is the only basin that has Cenozoic volcanic records in the northern adjacent land area of the South China Sea, and the age of the last volcanic eruption in this basin is 38 Ma. This age is also the last eruption age before the South China Sea spreading in its northern land. Based on the K-Ar isotope dating method, the basalts(29.27±1.52 Ma) and rhyolite(28.25 ± 1.14 Ma)were first found in Sanshui Basin. This bimodal volcanic rock that represents intraplate rifting tectonic setting postponed the volcanic records from Palaeocene-Middle Eocene to Mid-Oligocene. As we all know, the initial age of the South China Sea spreading is about 32 Ma. So, it has great significance to answer if there is the relationship between the South China Sea spreading and its surrounding land volcanic activity. Meanwhile, the findings have important significance for establishing early spreading evolution model of the South China Sea.
引文
[1]唐忠驭.三水盆地火山活动与油气的关系[J].石油与天然气地质,1984,5(2):89-100.
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[3]张恺,张清,姚慧君,等.中国海域及邻区中-新生代大地构造演化特征与裂谷型含油气盆地演化系列[J].石油与天然气地质,1983,4(4):353-364.
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[10]韩琦.南海北部陆缘中、新生代流纹岩基本特征研究[D].中国地质大学(北京)硕士学位论文,2017.
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[13]侯明才,陈洪德,田景春,等.广东三水盆地古近纪岩相古地理特征及演化[J].沉积与特提斯地质,2007,27(2):238-244.
[14]张显球.三水盆地白垩系的划分与对比[J].石油实验地质,1984,(1):36-44.
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[18]张维,方念乔.广东三水盆地始新世火山岩地球化学特征[J].地球科学,2014,39(1):37-44.
[19]武莉娜,王志畅,汪云亮.微量元素La,Nb,Zr在判别大地构造环境方面的应用[J].东华理工大学学报(自然科学版),2003,26(4):343-348.
[20]孙书勤,张成江,赵松江.大陆板内构造环境的微量元素判别[J].大地构造与成矿学,2007,31(1):104-109.
[21]Maitre R W L.A classification of igneous rocks and glossary of terms:recommendations of the International Union of geological sciences subcommission on the systematics of igneous rocks[M].Blackwell,1989.
[22]Sun S S,Mcdonough W F.Chemical and isotopic systematics of oceanic basalts:implications for mantle composition and processes[J].Geological Society London Special Publications,1989,42(1):313-345.
[23]Ayalew D,Yirgu G.Crustal contribution to the genesis of Ethiopian plateau rhyolitic ignimbrites:basalt and rhyolite geochemical provinciality[J].Journal of the Geological Society,2003,160(1):47-56.
[24]Ayalew D,Gibson S A.Head-to-tail transition of the Afar mantle plume:Geochemical evidence from a Miocene bimodal basaltrhyolite succession in the Ethiopian Large Igneous Province[J].Lithos,2009,112(3/4):461-476.
[25]Pearce J A,Cann J R.Tectonic Setting of Basic Volcanic Rocks determined using Trace Element Analyses[J].Earth Planet.sci.lett,1973,19(2):290-300.
[26]Pearce J A,Harris N B W,Tindle A G.Trace Element Discrimination Diagrams for the Tectonic Interpretation of Granitic Rocks[J].J.Petrol.,1984,25(4):956-983.
[27]Whalen J B,Currie K L,Chappell B W.A-type granites:geochemical characteristics,discrimination and petrogenesis[J].Contributions to Mineralogy&Petrology,1987,95(4):407-419.
[28]Eby G N.The A-type granitoids:A review of their occurrence and chemical characteristics and speculations on their petrogenesis[J].Lithos,1990,26(1):115-134.
[29]Hayes D E.Margins of the southwest sub-basin of the South China Sea--A frontier exploration target?[J].Energy,1985,10(3):373-382.
[30]姚伯初,万玲,吴能友.南海新生代构造演化及岩石圈三维结构特征[J].地质通报,2005,24(1):1-8.
[31]方念乔,姚伯初,万玲,等.华南和南海北部陆缘岩石圈速度结构特征与沉积盆地成因[J].地球科学-中国地质大学学报,2007,32(2):147-154.
[32]张功成,王璞珺,吴景富,等.边缘海构造旋回:南海演化的新模式[J].地学前缘,2015,22(3):27-37.
[33]Zhu B Q,Wang H F,Chen Y W,et al.Geochronological and geochemical constraint on the Cenozoic extension of Cathaysian lithosphere and tectonic evolution of the border sea basins in East Asia[J].Journal of Asian Earth Sciences,2004,24(2):163-175.
[34]王慧芬,杨学昌,朱炳泉,等.中国东部新生代火山岩K-Ar年代学及其演化[J].地球化学,1988,(1):1-12.
[35]朱炳泉,王慧芬,杨学昌.中国东部新生代火山作用时代与构造环境变迁[J].地球化学,1988,(3):209-215.
[36]朱炳泉,王一先,王慧芬,等.黄山-温州地球化学剖面及廊区解析[J].地球化学,1997,(2):1-13.
[37]朱炳泉,王慧芬.雷琼地区MORB-OIB过渡型地幔源火山作用的Nd-Sr-Pb同位素证据[J].地球化学,1989,(3):193-201.
[38]Zhu B Q,Wang H F.Geochronology of and Nd-Sr-Pb isotopic evidences for mantle source in the ancient subduction zone beneath Sanshui basin,Guangdong Province,China[J].Chinese J.Geochem.,1989,8(1):65-71.
[39]王贤觉,吴明清,梁德华,等.南海玄武岩的某些地球化学特征[J].地球化学,1984,(4):332-340.
[40]Tu K,Flower M F J,Carlson R W,et al.Magmatism in the South China Basin I:isotopic and trace element evidence for an endogenous dupal mantle component[J].Chemical Geology,1992,97(1/2):47-63.
[41]王叶剑,韩喜球,罗照华,等.晚中新世南海珍贝-黄岩海山岩浆活动及其演化:岩石地球化学和年代学证据[J].海洋学报,2009,31(4):93-102.
[42]鄢全树.南海新生代碱性玄武岩的特征及其地球动力学意义[D].中国科学院研究生院海洋研究所博士学位论文,2008.
[43]李兆麟,丘志力,秦社彩,等.南海海山玄武岩形成条件研究[J].矿物学报,1991,(4):325-333.
[2]唐忠驭.广东三水盆地白垩纪-早第三纪裂谷型火山作用[J].广东地质,1994,(1):49-57.
[3]张恺,张清,姚慧君,等.中国海域及邻区中-新生代大地构造演化特征与裂谷型含油气盆地演化系列[J].石油与天然气地质,1983,4(4):353-364.
[4]丘元禧,吴起俊,吉雄,等.中国东南陆缘带及其邻近海域晚中生代、新生代的裂陷作用[J].热带海洋学报,1986,(2):5-13.
[5]董月霞,肖龙,周海民,等.广东三水盆地双峰式火山岩:空间展布、岩石学特征及其盆地动力学意义[J].大地构造与成矿学,2006,30(1):82-92.
[6]肖龙,周海民,董月霞,等.广东三水盆地火山岩:地球化学特征及成因--兼论火山岩性质的时空演化和南海形成的深部过程[J].大地构造与成矿学,2006,30(1):72-81.
[7]Zhou H M,Xiao L,Dong Y X,et al.Geochemical and geochronological study of the Sanshui basin bimodal volcanic rock suite,China:Implications for basin dynamics in southeastern China[J].Journal of Asian Earth Sciences,2009,34(2):178-189.
[8]张维.三水盆地陆内裂谷火山活动特征与南海早期演化[D].中国地质大学(北京)博士学位论文,2013.
[9]Yang S Y,Fang N Q.Geochemical variation of volcanic rocks from the South China Sea and neighboring land:Implication for magmatic process and mantle structure[J].Acta Oceanologica Sinica2015,34(12):112-124.
[10]韩琦.南海北部陆缘中、新生代流纹岩基本特征研究[D].中国地质大学(北京)硕士学位论文,2017.
[11]广东省地质矿产局.广东省区域地质志[M].北京:地质出版社,1988.
[12]朱炳泉,王慧芬,陈毓蔚,等.新生代华夏岩石圈减薄与东亚边缘海盆构造演化的年代学与地球化学制约研究[J].地球化学,2002,31(3):213-221.
[13]侯明才,陈洪德,田景春,等.广东三水盆地古近纪岩相古地理特征及演化[J].沉积与特提斯地质,2007,27(2):238-244.
[14]张显球.三水盆地白垩系的划分与对比[J].石油实验地质,1984,(1):36-44.
[15]Chung S L,Cheng H,Jahn B M,et al.Major and trace element,and Sr-Nd isotope constraints on the origin of Paleogene volcanism in South China prior to the South China Sea opening[J].Lithos,1997,40(2/4):203-220.
[16]Zhu B Q,Wang H F.Nd-Sr-Pb isotopic and chemical evidence for the volcanism with MORB-OIB source characteristics in the Leiqiong area,China[J].Geochimica,1989,3:193-201.
[17]桑海清,王非,贺怀宇,等.中国K-Ar法地质年龄标准物质ZBH-15黑云母的研制[J].矿物岩石地球化学通报,2006,26(3):201-217.
[18]张维,方念乔.广东三水盆地始新世火山岩地球化学特征[J].地球科学,2014,39(1):37-44.
[19]武莉娜,王志畅,汪云亮.微量元素La,Nb,Zr在判别大地构造环境方面的应用[J].东华理工大学学报(自然科学版),2003,26(4):343-348.
[20]孙书勤,张成江,赵松江.大陆板内构造环境的微量元素判别[J].大地构造与成矿学,2007,31(1):104-109.
[21]Maitre R W L.A classification of igneous rocks and glossary of terms:recommendations of the International Union of geological sciences subcommission on the systematics of igneous rocks[M].Blackwell,1989.
[22]Sun S S,Mcdonough W F.Chemical and isotopic systematics of oceanic basalts:implications for mantle composition and processes[J].Geological Society London Special Publications,1989,42(1):313-345.
[23]Ayalew D,Yirgu G.Crustal contribution to the genesis of Ethiopian plateau rhyolitic ignimbrites:basalt and rhyolite geochemical provinciality[J].Journal of the Geological Society,2003,160(1):47-56.
[24]Ayalew D,Gibson S A.Head-to-tail transition of the Afar mantle plume:Geochemical evidence from a Miocene bimodal basaltrhyolite succession in the Ethiopian Large Igneous Province[J].Lithos,2009,112(3/4):461-476.
[25]Pearce J A,Cann J R.Tectonic Setting of Basic Volcanic Rocks determined using Trace Element Analyses[J].Earth Planet.sci.lett,1973,19(2):290-300.
[26]Pearce J A,Harris N B W,Tindle A G.Trace Element Discrimination Diagrams for the Tectonic Interpretation of Granitic Rocks[J].J.Petrol.,1984,25(4):956-983.
[27]Whalen J B,Currie K L,Chappell B W.A-type granites:geochemical characteristics,discrimination and petrogenesis[J].Contributions to Mineralogy&Petrology,1987,95(4):407-419.
[28]Eby G N.The A-type granitoids:A review of their occurrence and chemical characteristics and speculations on their petrogenesis[J].Lithos,1990,26(1):115-134.
[29]Hayes D E.Margins of the southwest sub-basin of the South China Sea--A frontier exploration target?[J].Energy,1985,10(3):373-382.
[30]姚伯初,万玲,吴能友.南海新生代构造演化及岩石圈三维结构特征[J].地质通报,2005,24(1):1-8.
[31]方念乔,姚伯初,万玲,等.华南和南海北部陆缘岩石圈速度结构特征与沉积盆地成因[J].地球科学-中国地质大学学报,2007,32(2):147-154.
[32]张功成,王璞珺,吴景富,等.边缘海构造旋回:南海演化的新模式[J].地学前缘,2015,22(3):27-37.
[33]Zhu B Q,Wang H F,Chen Y W,et al.Geochronological and geochemical constraint on the Cenozoic extension of Cathaysian lithosphere and tectonic evolution of the border sea basins in East Asia[J].Journal of Asian Earth Sciences,2004,24(2):163-175.
[34]王慧芬,杨学昌,朱炳泉,等.中国东部新生代火山岩K-Ar年代学及其演化[J].地球化学,1988,(1):1-12.
[35]朱炳泉,王慧芬,杨学昌.中国东部新生代火山作用时代与构造环境变迁[J].地球化学,1988,(3):209-215.
[36]朱炳泉,王一先,王慧芬,等.黄山-温州地球化学剖面及廊区解析[J].地球化学,1997,(2):1-13.
[37]朱炳泉,王慧芬.雷琼地区MORB-OIB过渡型地幔源火山作用的Nd-Sr-Pb同位素证据[J].地球化学,1989,(3):193-201.
[38]Zhu B Q,Wang H F.Geochronology of and Nd-Sr-Pb isotopic evidences for mantle source in the ancient subduction zone beneath Sanshui basin,Guangdong Province,China[J].Chinese J.Geochem.,1989,8(1):65-71.
[39]王贤觉,吴明清,梁德华,等.南海玄武岩的某些地球化学特征[J].地球化学,1984,(4):332-340.
[40]Tu K,Flower M F J,Carlson R W,et al.Magmatism in the South China Basin I:isotopic and trace element evidence for an endogenous dupal mantle component[J].Chemical Geology,1992,97(1/2):47-63.
[41]王叶剑,韩喜球,罗照华,等.晚中新世南海珍贝-黄岩海山岩浆活动及其演化:岩石地球化学和年代学证据[J].海洋学报,2009,31(4):93-102.
[42]鄢全树.南海新生代碱性玄武岩的特征及其地球动力学意义[D].中国科学院研究生院海洋研究所博士学位论文,2008.
[43]李兆麟,丘志力,秦社彩,等.南海海山玄武岩形成条件研究[J].矿物学报,1991,(4):325-333.
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