海南岛中部五指山地区早白垩世火山岩地球化学特征及其形成构造背景
|
摘要
海南岛中部五指山地区发育一套中酸性向酸性演化的火山岩系,总厚度>2 299 m,岩性自下而上主要由英安质—流纹质熔岩及相应的火山碎屑岩组成,在TAS火山岩分类图上大部分落入流纹岩区,仅个别落入英安岩、玄武安山岩、粗面安山岩区。岩石具有Si O2、Al2O3、Na2O、K2O偏高,而Ca O、Mg O、Ti O2等偏低的特点。稀土配分模式均表现为呈右倾的轻稀土富集型曲线,轻、重稀土分异较强,LREE/HREE=10.17~22.34(平均13.56)。岩石富集大离子亲石元素,亏损高场强元素,具有正常弧花岗岩浆的特点,推断其形成于伸展的大地构造背景。
A suite of lavas thickness more than 2299 m exposed in Wuzhishan area, Mid-Hainan Island. Which lavas mainly consisted with dacitic-rhyolitic lava and pyroclastic rocks. In TAS diagrams of volcanic rocks,most of the examples fall into the rhyolite area,only several of them fall in the dacite, basaltic andesite and trachyandesite areas. The rocks have relatively high Si O2,Al2 O3,Na2 O and K2 O and low Ca O、Mg O and Ti O2. The REE pattern of the lavas shows right-dipping trend which indicates LREE enriched, LREE/HREE=10.17~22.34(mean13.56). The lavas also have characteristics of enrichment of LILE and depletion of HFSE. All the features indicate the lavas have similar characteristicsof normal arc granite magma, these rocks must have been formed under the extensional tectonic setting.
A suite of lavas thickness more than 2299 m exposed in Wuzhishan area, Mid-Hainan Island. Which lavas mainly consisted with dacitic-rhyolitic lava and pyroclastic rocks. In TAS diagrams of volcanic rocks,most of the examples fall into the rhyolite area,only several of them fall in the dacite, basaltic andesite and trachyandesite areas. The rocks have relatively high Si O2,Al2 O3,Na2 O and K2 O and low Ca O、Mg O and Ti O2. The REE pattern of the lavas shows right-dipping trend which indicates LREE enriched, LREE/HREE=10.17~22.34(mean13.56). The lavas also have characteristics of enrichment of LILE and depletion of HFSE. All the features indicate the lavas have similar characteristicsof normal arc granite magma, these rocks must have been formed under the extensional tectonic setting.
引文
[1]地质矿产部宜昌地质矿产研究所,海南省地质矿产局.海南岛地质(二)岩浆岩[M].北京:地质出版社,1991.
[2]海南省地质矿产勘查开发局.海南省岩石地层[M].武汉:中国地质大学出版社,1997.
[3]周云,梁新权,梁细荣,蒋英,蔡运花,邹水长,王策,付建刚,董超阁.海南白垩纪六罗村组火山岩的年代学、地球化学特征及其大地构造意义[J].大地构造与成矿学,2015,39(5):903-918.
[4]刘颖,刘海臣,李献华.用ICP-MS准确测定岩石样品中的40余种微量元素[J].地球化学,1996,25(6):552-558.
[5]梁细荣,韦刚健,李献华,刘颖.利用MC-ICPMS精确测定143Nd/144Nd和Sm/Nd比值[J].地球化学,2003,32(1):91-96.
[6]符国祥.海南岛中生代火山机构及其成矿关系研究[R].,1994.
[7]南京地质矿产研究所,海南地矿局地质大队.海南岛暨五指山地区中生代火山地质与成矿关系[R].1996.
[8]邱家骧,林景仟.岩石化学[M].北京:地质出版社,1991.
[9]朱炳泉.地球科学中同位素体系理论与应用:兼论中国大陆壳幔演化[M].北京:科学出版社,1998.
[10]Zartman R E,Doe B R.Plumbotectonics—the model[J].Tectonophysics,75(1-2):135-162.
[11]Sun S S.Lead isotopic study of young volcanic rocks from mid-ocean ridges,ocean islands and island arcs[J].Philosophical Transactions of the Royal Society of London:Series A,Mathematical and Physical Sciences,1980,297(1431):409-445.
[12]Chow T J,Patterson C C.The occurrence and significance of lead isotopes in pelagic sediments[J].Geochimica et Cosmochimica Acta,1962,26(2):263-308.
[13]Xu D R,Kusiak M A,Wang Z,Chen H Y,Bakun-Czubarow N,Wu,C J,Konecny,P,Hollings P.Microstructural observation and chemical dating on monazite from the Shilu Group,Hainan Province of South China:Implications for origin and evolution of the Shilu Fe-Co-Cu ore district[J].Lithos,2015,216-217:158-177.
[14]Wang Z L,Xu D R,Hu G C,Yu L L,Wu C J,Zhang Z C,Cai J X,Shan Q,Hou M Z,Chen H Y.Detrital zircon U-Pb ages of the Proterozoic metaclastic-sedimentary rocks in Hainan Province of South China:New constraints on the depositional time,source area,and tectonic setting of the Shilu Fe-Co-Cu ore district[J].Journal of Asian Earth Sciences,2015,14(4):1-19.
[15]Zhou Y,Liang X Q,Kroner A,Cai Y F,Shao T B,Wen S N,Jiang Y,Fu J G,Wang C,Dong C G.Late Cretaceous lithospheric extension in SE China:Constraints from volcanic rocks in Hainan Island[J].Lithos,2015,232:100-110.
[16]Jiang X Y,Li X H.In situ zircon U-Pb and Hf-O isotopic results for ca.73 Ma granite in Hainan Island:Implications for the termination of an Andean-type active continental margin in southeast China[J].Journal of Asian Earth Sciences,2014,82:32-46.
[17]唐立梅,陈汉林,董传万.海南岛晚中生代花岗闪长岩及其包体的锆石U-Pb定年及构造意义[J].地质科学,2014,49(1):259-274.
[18]陈沐龙,马昌前,吕昭英,云平,刘园园.海南岛千家复式岩体锆石U-Pb年代学及其地质意义[J].地质科技情报,2014,33(6):1-10.
[19]Pearce J A,Harris N B,Tindle A G.Trace element discrimination diagrams for the tectonic interpretation of granitic rocks[J].Journal of petrology,1984,25(4):956-983.
[20]余心起,陈子微,刘秀,姬祥,周术召,杨鑫朋.皖南屯溪地区石岭组流纹岩LA-ICP-MS锆石U-Pb年龄及其时代的重新厘定[J].地质通报,2016,35(1):175-180.
[21]马之力.华南东部白垩纪火山岩盆地构造演化与动力学过程[D].合肥:合肥工业大学,2015.
[22]段政,赵希林,邢光福,杨祝良,余明刚,陈志洪,靳国栋,姜杨,李亚楠.浙闽相邻区白垩纪上下火山岩系成因与壳幔作用对比研究[J].地质学报,2015,89(2):319-338.
[23]毛建仁,叶海敏,Takahashi Yutaka,厉子龙,Weon-Seo KEE,赵希林,刘凯.中国东南沿海与西南日本白垩纪-古近纪火山-侵入岩带的地球动力学特征[J].资源调查与环境,2014,35(3):157-168.
[24]张继淹,李乾,王建辉.广西藤县西部大燕山首次发现早白垩世火山岩[J].桂林理工大学学报,2013,33(2):265.
[25]陈振宇,王登红,陈郑辉,侯可军,赵正.赣南兴国田新白垩纪火山岩的锆石U-Pb定年及其构造背景[J].岩矿测试,2012,31(3):543-548.
[26]邢光福,陈荣,杨祝良,周宇章,李龙明,姜杨,陈志洪.东南沿海晚白垩世火山岩浆活动特征及其构造背景[J].岩石学报,2009,25(1):77-91.
[27]耿红燕,徐夕生,O’Reilly S Y,赵明,孙涛.粤西白垩纪火山-侵入岩浆活动及其地质意义[J].中国科学(D辑),2006,36(7):601-617.
[28]Huang J.P-and S-wave tomography of the Hainan and surrounding regions:Insight into the Hainan plume[J].Tectonophysics,2014,633:176-192.
[29]Tang M,Wang X L,Shu X J,Wang D,Yang T,Gopon P.Hafnium isotopic heterogeneity in zircons from granitic rocks:Geochemical evaluation and modeling of“zircon effect”in crustal anatexis[J].Earth and Planetary Science Letters,2014,389:188-199.
[30]Tang L M,Chen H L,Dong C W.Geochronology,Geochemistry and Its Tectonic Significance of Chahe Granites in Hainan Island[J].Journal of Earth Science,2013,24(4):619-625.
[31]唐立梅,陈汉林,董传万,杨树锋,沈忠悦,程晓敢,付璐露.海南岛中三叠世造山后伸展作用:双峰式侵入岩的年代学及地球化学制约[J].中国科学:地球科学.2013,43(03):433-445.
[32]李建华.华南中生代大地构造过程[D].北京:中国地质科学院,2013.
[33]Rittmann A.Note to contribution by V.Gottini on the“Serial character of the volcanic rocks of Pantelleria[J].Bulletin Volcanologique,1969,33(3):979-981.
[34]Batchelor R A,Bowden P.Petrogenetic interpretation granitoid rock series using muhicationic parameters[J].Chemical Geo1ogy,1985,48(1):43-55.
[2]海南省地质矿产勘查开发局.海南省岩石地层[M].武汉:中国地质大学出版社,1997.
[3]周云,梁新权,梁细荣,蒋英,蔡运花,邹水长,王策,付建刚,董超阁.海南白垩纪六罗村组火山岩的年代学、地球化学特征及其大地构造意义[J].大地构造与成矿学,2015,39(5):903-918.
[4]刘颖,刘海臣,李献华.用ICP-MS准确测定岩石样品中的40余种微量元素[J].地球化学,1996,25(6):552-558.
[5]梁细荣,韦刚健,李献华,刘颖.利用MC-ICPMS精确测定143Nd/144Nd和Sm/Nd比值[J].地球化学,2003,32(1):91-96.
[6]符国祥.海南岛中生代火山机构及其成矿关系研究[R].,1994.
[7]南京地质矿产研究所,海南地矿局地质大队.海南岛暨五指山地区中生代火山地质与成矿关系[R].1996.
[8]邱家骧,林景仟.岩石化学[M].北京:地质出版社,1991.
[9]朱炳泉.地球科学中同位素体系理论与应用:兼论中国大陆壳幔演化[M].北京:科学出版社,1998.
[10]Zartman R E,Doe B R.Plumbotectonics—the model[J].Tectonophysics,75(1-2):135-162.
[11]Sun S S.Lead isotopic study of young volcanic rocks from mid-ocean ridges,ocean islands and island arcs[J].Philosophical Transactions of the Royal Society of London:Series A,Mathematical and Physical Sciences,1980,297(1431):409-445.
[12]Chow T J,Patterson C C.The occurrence and significance of lead isotopes in pelagic sediments[J].Geochimica et Cosmochimica Acta,1962,26(2):263-308.
[13]Xu D R,Kusiak M A,Wang Z,Chen H Y,Bakun-Czubarow N,Wu,C J,Konecny,P,Hollings P.Microstructural observation and chemical dating on monazite from the Shilu Group,Hainan Province of South China:Implications for origin and evolution of the Shilu Fe-Co-Cu ore district[J].Lithos,2015,216-217:158-177.
[14]Wang Z L,Xu D R,Hu G C,Yu L L,Wu C J,Zhang Z C,Cai J X,Shan Q,Hou M Z,Chen H Y.Detrital zircon U-Pb ages of the Proterozoic metaclastic-sedimentary rocks in Hainan Province of South China:New constraints on the depositional time,source area,and tectonic setting of the Shilu Fe-Co-Cu ore district[J].Journal of Asian Earth Sciences,2015,14(4):1-19.
[15]Zhou Y,Liang X Q,Kroner A,Cai Y F,Shao T B,Wen S N,Jiang Y,Fu J G,Wang C,Dong C G.Late Cretaceous lithospheric extension in SE China:Constraints from volcanic rocks in Hainan Island[J].Lithos,2015,232:100-110.
[16]Jiang X Y,Li X H.In situ zircon U-Pb and Hf-O isotopic results for ca.73 Ma granite in Hainan Island:Implications for the termination of an Andean-type active continental margin in southeast China[J].Journal of Asian Earth Sciences,2014,82:32-46.
[17]唐立梅,陈汉林,董传万.海南岛晚中生代花岗闪长岩及其包体的锆石U-Pb定年及构造意义[J].地质科学,2014,49(1):259-274.
[18]陈沐龙,马昌前,吕昭英,云平,刘园园.海南岛千家复式岩体锆石U-Pb年代学及其地质意义[J].地质科技情报,2014,33(6):1-10.
[19]Pearce J A,Harris N B,Tindle A G.Trace element discrimination diagrams for the tectonic interpretation of granitic rocks[J].Journal of petrology,1984,25(4):956-983.
[20]余心起,陈子微,刘秀,姬祥,周术召,杨鑫朋.皖南屯溪地区石岭组流纹岩LA-ICP-MS锆石U-Pb年龄及其时代的重新厘定[J].地质通报,2016,35(1):175-180.
[21]马之力.华南东部白垩纪火山岩盆地构造演化与动力学过程[D].合肥:合肥工业大学,2015.
[22]段政,赵希林,邢光福,杨祝良,余明刚,陈志洪,靳国栋,姜杨,李亚楠.浙闽相邻区白垩纪上下火山岩系成因与壳幔作用对比研究[J].地质学报,2015,89(2):319-338.
[23]毛建仁,叶海敏,Takahashi Yutaka,厉子龙,Weon-Seo KEE,赵希林,刘凯.中国东南沿海与西南日本白垩纪-古近纪火山-侵入岩带的地球动力学特征[J].资源调查与环境,2014,35(3):157-168.
[24]张继淹,李乾,王建辉.广西藤县西部大燕山首次发现早白垩世火山岩[J].桂林理工大学学报,2013,33(2):265.
[25]陈振宇,王登红,陈郑辉,侯可军,赵正.赣南兴国田新白垩纪火山岩的锆石U-Pb定年及其构造背景[J].岩矿测试,2012,31(3):543-548.
[26]邢光福,陈荣,杨祝良,周宇章,李龙明,姜杨,陈志洪.东南沿海晚白垩世火山岩浆活动特征及其构造背景[J].岩石学报,2009,25(1):77-91.
[27]耿红燕,徐夕生,O’Reilly S Y,赵明,孙涛.粤西白垩纪火山-侵入岩浆活动及其地质意义[J].中国科学(D辑),2006,36(7):601-617.
[28]Huang J.P-and S-wave tomography of the Hainan and surrounding regions:Insight into the Hainan plume[J].Tectonophysics,2014,633:176-192.
[29]Tang M,Wang X L,Shu X J,Wang D,Yang T,Gopon P.Hafnium isotopic heterogeneity in zircons from granitic rocks:Geochemical evaluation and modeling of“zircon effect”in crustal anatexis[J].Earth and Planetary Science Letters,2014,389:188-199.
[30]Tang L M,Chen H L,Dong C W.Geochronology,Geochemistry and Its Tectonic Significance of Chahe Granites in Hainan Island[J].Journal of Earth Science,2013,24(4):619-625.
[31]唐立梅,陈汉林,董传万,杨树锋,沈忠悦,程晓敢,付璐露.海南岛中三叠世造山后伸展作用:双峰式侵入岩的年代学及地球化学制约[J].中国科学:地球科学.2013,43(03):433-445.
[32]李建华.华南中生代大地构造过程[D].北京:中国地质科学院,2013.
[33]Rittmann A.Note to contribution by V.Gottini on the“Serial character of the volcanic rocks of Pantelleria[J].Bulletin Volcanologique,1969,33(3):979-981.
[34]Batchelor R A,Bowden P.Petrogenetic interpretation granitoid rock series using muhicationic parameters[J].Chemical Geo1ogy,1985,48(1):43-55.