青藏高原改则火山岩地球化学特征
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摘要
对分布于西藏改则地区班公湖-怒江缝合带的早白垩世去申拉组火山岩进行了岩石学、地球化学及大地构造研究。该区火山岩为一套低-中钾的中-基性钙碱性岩石,其中玄武岩原始岩浆来源于不均一地幔,安山岩岩浆由玄武岩岩浆结晶分异形成,岩浆在上升过程中未发生地壳混染作用;该区火山岩形成于早白垩世大陆板内裂谷构造背景下。
The petrology and geochemistry and tectonic background of the early Cretaceous volcanics from Cha gelong in Gaize was studied. The Cretaceous volcanics was distributed in the Bangong-Nujiang suture. The volcanic rocks in the study area belong to the low to medium-K calc-alkaline series. The primary magma of basalt came from the heterogeneous mantle,and the andesite magma origined from basalt magma during crystallization differentiation.The upwelling process of magma had no significant crustal assimilation. The volcanic rocks of Gaize were formed in the continental rift tectonic environment during the early cretaceous period.
The petrology and geochemistry and tectonic background of the early Cretaceous volcanics from Cha gelong in Gaize was studied. The Cretaceous volcanics was distributed in the Bangong-Nujiang suture. The volcanic rocks in the study area belong to the low to medium-K calc-alkaline series. The primary magma of basalt came from the heterogeneous mantle,and the andesite magma origined from basalt magma during crystallization differentiation.The upwelling process of magma had no significant crustal assimilation. The volcanic rocks of Gaize were formed in the continental rift tectonic environment during the early cretaceous period.
引文
1朱弟成,潘桂棠,莫宣学,等.冈底斯中北部晚侏罗世-早白垩世地球动力学环境:火山岩约束[J].岩石学报,2006,22(3):534-546Zhu Dicheng,Pan Guitang,Mo Xuanxue,et al.Late Jurassic-Early Cretaceous geodynamic setting in middle-northern Gangdese:new insights from volcanic rocks[J].Acta Petrologica Sinica,2006,22(3):534-546
2张玉修.班公湖-怒江缝合带中西段构造演化[D].广州:中国科学院广州地球化学研究所,2007Zhang Yuxiu.Tectonic evolution of the middle-western Bangong-Nujiang Suture,tibet[D].Guangzhou:Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,2007
3潘桂堂,王立全,朱弟成.青藏高原区域地质调查中几个重大科学问题的思考[J].地质通报,2004,23(1):12-19Pan Guitang,Wang Liquan,Zhu Dicheng.Thoughts on some important scientific problems in regional geological survey of the QinghaiTibet Plateau[J].Regional Geology of China,2004,23(1):12-19
4西藏自治区区域地质调查大队.西藏1∶100万改则幅地质调查报告[R].拉萨:西藏自治区区域地质调查大队,1986Geological Survey Team of Tibet Geology.Report on the main result of 1∶100 000 0 regional geological survey in Tibet[R].Lhasa:Geological Survey Team of Tibet Geology,1986
5曾庆高,毛国政,王保第,等.西藏1∶25万改则幅地质调查报告[R].武汉:中国地质大学出版社,2006Zeng Qinggao,Mao Guozheng,Wang Baodi,et al.Report on the main result of 1∶250 000 regional geological survey in Tibet[R].Wuhan:China University of Geosciences Press,2006
6 Zhang Y X,Li Z W,Yang W G,et al.Late Jurassic-early Cretaceous episodic development of the Bangong Meso-Tethyan subduction:evidence from elemental and Sr-Nd isotopicgeochemistry of arc magmatic rocks,Gaize Region,central Tibet,China[J].Journal of Asian Earth Sciences,2017,135:212-242
7 Liu S,Hu R,Gao S,et al.U-Pb zircon age,geochemical and Sr-Nd isotopic data as constraints on the petrogenesis and emplacement time of andesites from Gerze,southern Qiangtang Block,northern Tibet[J].Journal of Asian Earth Sciences,2012,45:150-161
8 Ding L,Kapp P,Yin A,et al.Early Territary volcanism in the Qiangtang terrane of central Tibet:evidence for a transition from oceanic to continental subduction[J].Journal of Petrology,2003,4:1833-1865
9 Zhang Y X,Zhang K J,Li B,et al.Zircon SHRIMP U-Pb dating and petrogenesis of plagiogranite from Lagkor Lake ophiolite,Gerze,Tibet,China[J].Chinese Science Bulletin,2007,52(5):651-659
10 Ding L and Lai Q Z.New geological evidence of crustal thickening in the Gangdese block prior to the Indo-Asian collision[J].Chinese Science Bulletin,2003,48(15):1604-1610
11 Zhang K J,Xia B,Zhang Y X,et al.Central Tibetan Meso-Tethyan oceanic plateau[J].Lithos,2014,211:278-288
12坚润堂,赵献昆,姜华.西藏尼木斑岩铜多金属矿区岩浆岩地球化学特征及成因探讨[J].科学技术与工程,2016,16(4):141-151Jian Runtang,Zhao Xiankun,Jiang Hua.Geochemical characteristics of magmatic rock in Nimu porphyry copper polymetallic deposit in Tibet and its implications for petrogenesis[J].Science Technology and Engineering,2016,16(4):141-151
13李振江,张宽忠,游水生,等.西藏班戈县蓬错地区富铌玄武岩地球化学特征及地质意义[J].科学技术与工程,2018,18(24):9-15Li Zhenjiang,Zhang Kuanzhong,You Shuisheng,et al.Geochemical characteristics and geological implications of the Nb-enriched basalt in Pengcuo Aera,Bange County of Tibet[J].Science Technology and Engineering,2018,18(24):9-15
14马宏杰,张世涛,林楠,等.西藏芒康盆地粗面岩LA-ICP-MS锆石U-Pb定年及地质意义[J].科学技术与工程,2016,16(15):9-14Ma Hongjie,Zhang Shitao,Lin Nan,et al.LA-ICP-MS zircon U-Pb dating of the trachyte and its significance in Mangkang Basin,Tibet[J].Science Technology and Engineering,2016,16(15):9-14
15解龙,顿都,朱利东,等.西藏北冈底斯扎独顶A型花岗岩锆石U-Pb年代学、地球化学及其地质意义[J].中国地质,2015,42(5):1214-1227Xie Long,Dun Du,Zhu Lidong,et al.Zircon U-Pb geochronology,geochemistry and geological significance of the Zhaduding A-type granites in northern Gangdise,Tibet[J].Geology in China,2015,42(5):1214-1227
16王勤,唐菊兴,方向,等.西藏多龙矿集区铁格隆南铜(金银)矿床荣那矿段安山岩成岩背景:来自锆石U-Pb年代学、岩石地球化学的证据[J].中国地质,2015,42(5):1324-1336Wang Qin,Tang Juxing,Fang Xiang,et al.Petrogenetic setting of andsites in Rongna ore block,Tiegelong Cu(Au-Ag)deposit,Duolong ore concentration area,Tibet:evidence from zircon U-Pb LA-ICP-MS dating and petrogeochemistry of andsites[J].Geology in China,2015,42(5):1324-1336
17韦少港,宋扬,唐菊兴,等.西藏色那铜(金)矿床石英闪长玢岩年代学、地球化学与岩石成因[J].中国地质,2016(6):1894-1912Wei Shaogang,Song Yang,Tang Juxing,et al.Geochronology,geochemistry and petrogenesis of quartz diorite porphyrite from the Sena copper(gold)deposit,Tibet[J].Geology in China,2016(6):1894-1912
18杜德道,曲晓明,王根厚,等.西藏班公湖-怒江缝合带西段中特提斯洋盆的双向俯冲:来自岛弧型花岗岩锆石U-Pb年龄和元素地球化学的证据[J].岩石学报,2011,27(7):1993-2002Du Dedao,Qu Xiaoming,Wang Genhou,et al.Bidirectional subduction of the middle tethys oceanic basin in the west segment of Bangonghu-Nujiang suture,Tibet:evidence from zircon U-Pb laicpms dating and petrogeochemistry of arc granites[J].Acta Petrologica Sinica,2011,27(7):1993-2002
19陈玉禄,江元生.西藏班戈-切里错地区早白垩世火山岩的时代确定及意义[J].地质力学学报,2002,8(1):43-49Chen Yulu,Jiang Yuansheng.Age and significance of volcanic rock of early cretaceous in the Bange-Qielicuo Area in Tibet[J].Journal of Geomechanics,2002,8(1):43-49
20吴浩,李才,胡培远,等.西藏尼玛县塔色普勒地区去申拉组火山岩的发现及其地质意义[J].地质通报,2013,32(7):1014-1026Wu Hao,Li Cai,Hu Peiyuan,at al.The discovery of Qushenla volcanic rocks in Tasepule Area of Nyima Country,Tibet,and its geological significance[J].Geological Bulletin of China,2013,32(7):1014-1026
21 Sui Q L,Wang Q,Zhu D C,et al.Compositional diversity of ca.110Ma magmatism in the northern Lhasa Terrane,Tibet:implications for the magmatic origin and crustal growth in a continent-continent collision zone[J].Lithos,2013,168:144-159
22常青松.西藏羌塘地块南缘热那错火山岩的岩石学、年代学和地球化学[D].北京:中国地质大学(北京),2012Chang Qingsong.Petrology,geochronology and geochemistry of rena-co volcanic rocks along southern margin of Qiangtang Terrane,Tibetan Plateau[D].Beijing:China University of Geosciences(Beijing),2012
23李伟.西藏改则地区去申拉组火山岩地球化学特征及锆石年代学制约[D].北京:中国地质大学(北京),2012Li Wei.Geochemistry and zircon U-Pb chronology of Qushenla group volcanic rocks in Gerze,Tibet[D].Beijing:China University of Geosciences(Beijing),2012
24 Zhu D C,Zhao Z D,Niu Y L.The Lhasa Terrane:record of a microcontinent and its histories of drift and growth[J].Earth and Planetary Science Letters,2011,301:241-255
25 Condie K C.Plate tectonics&crustal evolution[M].Oxford:Pergemon Press,1989
26 Taylor S R,Mc Leannan S.The continental crust:its composition and evolution:an examination of the geochemical record preserved in sedimentary rocks[M].Oxford:Blackwell Scientific Publication,1985
27夏林圻,夏祖春,徐学义.利用地球化学方法判别大陆玄武岩和岛弧玄武岩[J].岩石矿物学杂志,2007,26(1):77-89Xia Linxi,Xia Zuchun,Xu Xueyi.The discrimination between continental basalt and island arc basalt based on geochemical method[J].Acta Petrologica et Mineralogica,2007,26(1):77-89
28汪云亮,张成江,修淑芝.玄武岩类形成的大地构造环境的Th/Hf-Ta/Hf图解判别[J].岩石学报,2001,17(3):413-421Wang Yunliang,Zhang Chengjia,Xiu Shuzhi.Th/Hf-Ta/Hf identification of tectonic setting of basalts[J].Acta Petrologica Sinica,2001,17(3):413-421
29莫宣学.青藏高原岩浆岩成因研究:成果与展望[J].地质通报,2009,28(12):1693-1703Mo Xuanxue.A review of genesis study on magmatic rocks of the Qinghai-Tibet Plateau:achievements and remaining problems[J].Geological Bulletin of China,2009,28(12):1693-1703
30张开均,夏斌,夏邦栋.冈底斯弧弧后早白垩世裂谷作用的沉积学证据[J].沉积学报,2003,21(1):31-37Zhang Kaijun,Xia Bin,Xia Bangdong.Sedimentologic evidence for early Cretaceous back-arc rifting of the gangdese magmatic arc,Tibet,western China[J].Acta Sedimentologica Sinica,2003,21(1):31-37
31李金祥,李光明,秦克章,等.班公湖带多不杂富金斑岩铜矿床斑岩-火山岩的地球化学特征与时代:对成矿构造背景的制约[J].岩石学报,2008,24(3):531-543Li Jinxiang,Li Guangming,Qin Kezhang,et al.Geochemistry of porphyries and volcanic rocks and ore-forming geochronology of Duobuza gold-rich porphyry copper deposit in Bangonghu Belt,Tibet:constraints on metaliogenic tectonic settings[J].Acta Petrologica Sinica,2008,24(3):531-543
2张玉修.班公湖-怒江缝合带中西段构造演化[D].广州:中国科学院广州地球化学研究所,2007Zhang Yuxiu.Tectonic evolution of the middle-western Bangong-Nujiang Suture,tibet[D].Guangzhou:Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,2007
3潘桂堂,王立全,朱弟成.青藏高原区域地质调查中几个重大科学问题的思考[J].地质通报,2004,23(1):12-19Pan Guitang,Wang Liquan,Zhu Dicheng.Thoughts on some important scientific problems in regional geological survey of the QinghaiTibet Plateau[J].Regional Geology of China,2004,23(1):12-19
4西藏自治区区域地质调查大队.西藏1∶100万改则幅地质调查报告[R].拉萨:西藏自治区区域地质调查大队,1986Geological Survey Team of Tibet Geology.Report on the main result of 1∶100 000 0 regional geological survey in Tibet[R].Lhasa:Geological Survey Team of Tibet Geology,1986
5曾庆高,毛国政,王保第,等.西藏1∶25万改则幅地质调查报告[R].武汉:中国地质大学出版社,2006Zeng Qinggao,Mao Guozheng,Wang Baodi,et al.Report on the main result of 1∶250 000 regional geological survey in Tibet[R].Wuhan:China University of Geosciences Press,2006
6 Zhang Y X,Li Z W,Yang W G,et al.Late Jurassic-early Cretaceous episodic development of the Bangong Meso-Tethyan subduction:evidence from elemental and Sr-Nd isotopicgeochemistry of arc magmatic rocks,Gaize Region,central Tibet,China[J].Journal of Asian Earth Sciences,2017,135:212-242
7 Liu S,Hu R,Gao S,et al.U-Pb zircon age,geochemical and Sr-Nd isotopic data as constraints on the petrogenesis and emplacement time of andesites from Gerze,southern Qiangtang Block,northern Tibet[J].Journal of Asian Earth Sciences,2012,45:150-161
8 Ding L,Kapp P,Yin A,et al.Early Territary volcanism in the Qiangtang terrane of central Tibet:evidence for a transition from oceanic to continental subduction[J].Journal of Petrology,2003,4:1833-1865
9 Zhang Y X,Zhang K J,Li B,et al.Zircon SHRIMP U-Pb dating and petrogenesis of plagiogranite from Lagkor Lake ophiolite,Gerze,Tibet,China[J].Chinese Science Bulletin,2007,52(5):651-659
10 Ding L and Lai Q Z.New geological evidence of crustal thickening in the Gangdese block prior to the Indo-Asian collision[J].Chinese Science Bulletin,2003,48(15):1604-1610
11 Zhang K J,Xia B,Zhang Y X,et al.Central Tibetan Meso-Tethyan oceanic plateau[J].Lithos,2014,211:278-288
12坚润堂,赵献昆,姜华.西藏尼木斑岩铜多金属矿区岩浆岩地球化学特征及成因探讨[J].科学技术与工程,2016,16(4):141-151Jian Runtang,Zhao Xiankun,Jiang Hua.Geochemical characteristics of magmatic rock in Nimu porphyry copper polymetallic deposit in Tibet and its implications for petrogenesis[J].Science Technology and Engineering,2016,16(4):141-151
13李振江,张宽忠,游水生,等.西藏班戈县蓬错地区富铌玄武岩地球化学特征及地质意义[J].科学技术与工程,2018,18(24):9-15Li Zhenjiang,Zhang Kuanzhong,You Shuisheng,et al.Geochemical characteristics and geological implications of the Nb-enriched basalt in Pengcuo Aera,Bange County of Tibet[J].Science Technology and Engineering,2018,18(24):9-15
14马宏杰,张世涛,林楠,等.西藏芒康盆地粗面岩LA-ICP-MS锆石U-Pb定年及地质意义[J].科学技术与工程,2016,16(15):9-14Ma Hongjie,Zhang Shitao,Lin Nan,et al.LA-ICP-MS zircon U-Pb dating of the trachyte and its significance in Mangkang Basin,Tibet[J].Science Technology and Engineering,2016,16(15):9-14
15解龙,顿都,朱利东,等.西藏北冈底斯扎独顶A型花岗岩锆石U-Pb年代学、地球化学及其地质意义[J].中国地质,2015,42(5):1214-1227Xie Long,Dun Du,Zhu Lidong,et al.Zircon U-Pb geochronology,geochemistry and geological significance of the Zhaduding A-type granites in northern Gangdise,Tibet[J].Geology in China,2015,42(5):1214-1227
16王勤,唐菊兴,方向,等.西藏多龙矿集区铁格隆南铜(金银)矿床荣那矿段安山岩成岩背景:来自锆石U-Pb年代学、岩石地球化学的证据[J].中国地质,2015,42(5):1324-1336Wang Qin,Tang Juxing,Fang Xiang,et al.Petrogenetic setting of andsites in Rongna ore block,Tiegelong Cu(Au-Ag)deposit,Duolong ore concentration area,Tibet:evidence from zircon U-Pb LA-ICP-MS dating and petrogeochemistry of andsites[J].Geology in China,2015,42(5):1324-1336
17韦少港,宋扬,唐菊兴,等.西藏色那铜(金)矿床石英闪长玢岩年代学、地球化学与岩石成因[J].中国地质,2016(6):1894-1912Wei Shaogang,Song Yang,Tang Juxing,et al.Geochronology,geochemistry and petrogenesis of quartz diorite porphyrite from the Sena copper(gold)deposit,Tibet[J].Geology in China,2016(6):1894-1912
18杜德道,曲晓明,王根厚,等.西藏班公湖-怒江缝合带西段中特提斯洋盆的双向俯冲:来自岛弧型花岗岩锆石U-Pb年龄和元素地球化学的证据[J].岩石学报,2011,27(7):1993-2002Du Dedao,Qu Xiaoming,Wang Genhou,et al.Bidirectional subduction of the middle tethys oceanic basin in the west segment of Bangonghu-Nujiang suture,Tibet:evidence from zircon U-Pb laicpms dating and petrogeochemistry of arc granites[J].Acta Petrologica Sinica,2011,27(7):1993-2002
19陈玉禄,江元生.西藏班戈-切里错地区早白垩世火山岩的时代确定及意义[J].地质力学学报,2002,8(1):43-49Chen Yulu,Jiang Yuansheng.Age and significance of volcanic rock of early cretaceous in the Bange-Qielicuo Area in Tibet[J].Journal of Geomechanics,2002,8(1):43-49
20吴浩,李才,胡培远,等.西藏尼玛县塔色普勒地区去申拉组火山岩的发现及其地质意义[J].地质通报,2013,32(7):1014-1026Wu Hao,Li Cai,Hu Peiyuan,at al.The discovery of Qushenla volcanic rocks in Tasepule Area of Nyima Country,Tibet,and its geological significance[J].Geological Bulletin of China,2013,32(7):1014-1026
21 Sui Q L,Wang Q,Zhu D C,et al.Compositional diversity of ca.110Ma magmatism in the northern Lhasa Terrane,Tibet:implications for the magmatic origin and crustal growth in a continent-continent collision zone[J].Lithos,2013,168:144-159
22常青松.西藏羌塘地块南缘热那错火山岩的岩石学、年代学和地球化学[D].北京:中国地质大学(北京),2012Chang Qingsong.Petrology,geochronology and geochemistry of rena-co volcanic rocks along southern margin of Qiangtang Terrane,Tibetan Plateau[D].Beijing:China University of Geosciences(Beijing),2012
23李伟.西藏改则地区去申拉组火山岩地球化学特征及锆石年代学制约[D].北京:中国地质大学(北京),2012Li Wei.Geochemistry and zircon U-Pb chronology of Qushenla group volcanic rocks in Gerze,Tibet[D].Beijing:China University of Geosciences(Beijing),2012
24 Zhu D C,Zhao Z D,Niu Y L.The Lhasa Terrane:record of a microcontinent and its histories of drift and growth[J].Earth and Planetary Science Letters,2011,301:241-255
25 Condie K C.Plate tectonics&crustal evolution[M].Oxford:Pergemon Press,1989
26 Taylor S R,Mc Leannan S.The continental crust:its composition and evolution:an examination of the geochemical record preserved in sedimentary rocks[M].Oxford:Blackwell Scientific Publication,1985
27夏林圻,夏祖春,徐学义.利用地球化学方法判别大陆玄武岩和岛弧玄武岩[J].岩石矿物学杂志,2007,26(1):77-89Xia Linxi,Xia Zuchun,Xu Xueyi.The discrimination between continental basalt and island arc basalt based on geochemical method[J].Acta Petrologica et Mineralogica,2007,26(1):77-89
28汪云亮,张成江,修淑芝.玄武岩类形成的大地构造环境的Th/Hf-Ta/Hf图解判别[J].岩石学报,2001,17(3):413-421Wang Yunliang,Zhang Chengjia,Xiu Shuzhi.Th/Hf-Ta/Hf identification of tectonic setting of basalts[J].Acta Petrologica Sinica,2001,17(3):413-421
29莫宣学.青藏高原岩浆岩成因研究:成果与展望[J].地质通报,2009,28(12):1693-1703Mo Xuanxue.A review of genesis study on magmatic rocks of the Qinghai-Tibet Plateau:achievements and remaining problems[J].Geological Bulletin of China,2009,28(12):1693-1703
30张开均,夏斌,夏邦栋.冈底斯弧弧后早白垩世裂谷作用的沉积学证据[J].沉积学报,2003,21(1):31-37Zhang Kaijun,Xia Bin,Xia Bangdong.Sedimentologic evidence for early Cretaceous back-arc rifting of the gangdese magmatic arc,Tibet,western China[J].Acta Sedimentologica Sinica,2003,21(1):31-37
31李金祥,李光明,秦克章,等.班公湖带多不杂富金斑岩铜矿床斑岩-火山岩的地球化学特征与时代:对成矿构造背景的制约[J].岩石学报,2008,24(3):531-543Li Jinxiang,Li Guangming,Qin Kezhang,et al.Geochemistry of porphyries and volcanic rocks and ore-forming geochronology of Duobuza gold-rich porphyry copper deposit in Bangonghu Belt,Tibet:constraints on metaliogenic tectonic settings[J].Acta Petrologica Sinica,2008,24(3):531-543