U-Pb age and genesis of the Hejiazhuang-Laohuyao intrusion in West Qinling and limitation of plate subduction time
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摘要:
何家庄—老虎窑岩体位于勉略缝合带以北，靠近秦岭微板块北部的商丹断裂带西段内部，两者的主体岩性为花岗闪长岩。本文对何家庄—老虎窑岩体进行了LA-ICP-MS锆石U-Pb同位素定年和地球化学特征以及Hf同位素特征研究。结果表明，西部何家庄附近花岗闪长岩侵位时间为235~240 Ma，东部老虎窑附近花岗岩侵位时间为239 Ma，两者均侵位于早三叠世。何家庄—老虎窑岩体花岗闪长岩均为高钾钙碱性系列，表现出强过铝质特征，属于I型花岗岩。两者岩浆锆石的εHf（t）值都是以负值为主，包含一到两个正值，地壳模式年龄为中元古代（1255~1754 Ma），指示它们的源岩有地幔物质的加入，可能是以中元古代古老地壳的部分熔融为主的壳源物质与地幔物质混合的岩浆。且表现出与埃达克质岩相似的地球化学特征，反映其岩浆可能起源于俯冲洋壳在高压环境下部分熔融产生的溶体与由于底侵作用被橄榄岩混染的下地壳部分熔融产生的高钾溶体的岩浆混合。两者的侵位年龄和成因证明了扬子板块与秦岭微板块在235~240 Ma的这个期间处于俯冲阶段。
Abstract:The Hejiazhuang-Laohuyao intrusions are located in the north of the Mianlue suture zone, close to the west section of the Shangdan fault zone in the north of the Qinling microplate, and their main lithology is granodiorite. The authors studied the LA-ICP-MS zircon U-Pb ages, geochemical characteristics and Hf isotope characteristics of the Hejiazhuang-Laohuyao intrusions. The results show that the emplacement time of the Hejiazhuang intrusion is 235-240 Ma and that of the Laohuyao intrusions is 239 Ma, suggesting that their emplacement epochs were the early Triassic. The granodiorite in the Hejiazhuang and Laohuyao intrusions are both high-potassium calcareous and alkaline series, showing strong over-aluminum characteristics and belonging to type I granite. The εHf (t) values of both magmatic zircons are mostly negative and contain one or two positive values. The model age of the crust is Mesoproterozoic (1255-1754 Ma), indicating that their source rocks experienced the addition of mantle materials, which might have been magma mixed with mantle materials dominated by partial melting of Mesoproterozoic ancient crust, showing similar geochemical characteristics to adakianrocks and indicating that the magma might have originated from high potassium solution magma mixing produced by partial melting of subducted oceanic crust under high pressure and partial melting of lower crust contaminated by peridotite due to bottom transgression. The emplacement time and genesis of them indicate that the Yangtze plate and Qinling microplates were subducted during the period of 235-240 Ma.
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图 6 何家庄—老虎窑岩体中花岗闪长岩原始地幔标准化微量元素蛛网图(a)和球粒陨石标准化稀土配分模式图(b)(标准化值据Sun and McDonough, 1989)
Figure 6.
表 2 何家庄—老虎窑岩体中花岗闪长岩主量(%)和微量(10-6)分析结果
Table 2. Analytical results of major(%) and trace element(10-6) of the granodiorite in the Hejiazhuang-Laohuyao intrusions
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Ames L, Tilton G R, Zhou G. 1993.Timing of collision of the Sino-Korean and Yangtze cratons:U-Pb zircon dating of coesite-bearing eclogites[J]. Geology, 21:339-342.
Ames L, Zhou G Z, Xiong B C. 1996, .Geochronology and isotopic character of ultrahigh-pressure metamorphism with implications for collision of the Sino-Korean and Yangtze cratons, central China[J]. Tectonics, 15:472-489. https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/95TC02552
Barth M G, McDongough W F, Rudnick R L. 2000. Tracking the budget of Nb and Ta in the Continental crust[J]. Chemical Geology, 165:197-213. https://www.sciencedirect.com/science/article/abs/pii/S0009254199001734
Chen Shaocong, Wang Yitian, Hu Qiaoqing, Zhang Juan, Wang Ruiting, Wang Changan, Liu Xielu, Ouyang Sheng. 2018. Genetic type and geochronology of the granodiorite porphyry dikes in the Fengtai ore concentration area, west Qinling orogen, and their geological significance[J]. Acta Geoscientica Sinica, 39(1):14-26(in Chinese with English abstract).
Ge Xiaoyue, Li Xianhua, Chen Zhigang, Li Wuping. 2002. Geochemical characteristics and genesis of middle-acid igneous rocks with high Sr and low Y type in yanshanian in eastern China:Constraints on crustal thickness in eastern China[J]. Geological Bulletin of China, (6):474-480(in Chinese with English abstract).
Hoskin P, Schaltegger U. 2003. The composition of zircon and igneous and metamorphic petrogenesis[J]. Rev. Mineral Geochem., 53:27-62. https://archive-ouverte.unige.ch/unige:28540
Huang BangYi, Wang Long, Xin Yujia, Qin Gan. 2015. Geochemistry of adakitic rocks and Cu-Au mineralization in the Tianzishan Region, west Qinling orogenic belt[J]. Southern Metals, (5):13-16 (in Chinese with English abstract).
Jin Weijun, Zhang Qi, He Dengfa, Jia Xiuqin. 2005. SHRIMP dating of adakites in western Qinling and their implications[J]. Acta Petrologica Sinica, 21(3):959-966(in Chinese with English abstract). https://www.researchgate.net/publication/279620659_SHRIMP_dating_of_adakites_in_western_Qinling_and_their_implications
Jin Xingchun. 1990. Subduction process and its relationship with tectogenetic cycle[J]. Marine Science Bulletin, (2):77-83(in Chinese with English abstract).
Ju Yinjuan, Wang Xingying, Zhang Zezhong. Late Triassic monzogranite and its mafic enclaves from the chaijiazhuang pluton in Tianshui area, Western Qinling Mountains:Petrogenesis and magmatic mixing[J]. Geology and Resources, 27(1):41-47(in Chinese with English abstract).
Lei Min.2010.Petrogenesis of Granites and their Relation to Tectonic Evolution of Orogen in the East Part of Qinling Orogenic Belt[D].Chinese Academy of Geological Sciences(in Chinese with English abstract).
Li Sanzhong, Zhang Guowei, Li Yalin, Lai Shaocong, Li Zonghui.2002.Deformation and orogeny of the Mian-Lue suture zone in the Qinling orogenic belt[J]. Acta Geological Sinica, (4):469-483(in Chinese with English abstract).
Li Shuguang, Sun Weidong, Zhang Guowei, Chen Jiayi, Yang Yongchen. 1996. Chronology and geochemistry of metavoleanic rocks from Heigouxia valley in the Mian-Lue tectonic zone, South Qinling——Evidence for a Paleozoic oceanic basin and its close time[J].Science in China, (3):223-230(in Chinese).
Li S G, Xiao Y L, Liu D L. 1993.Collision of the North China and Yangtze blocks and formation of coesite-bearing eclogites:Timing and processes[J]. Chem. Geol., 109:89-111. https://ui.adsabs.harvard.edu/abs/1993ChGeo.109...89L/abstract
Li Yalin, Li Sanzhong, Zhang Guowei.2002.Composition of the Mianlue suture zone and its relation with the evolution of the old oceanic basin[J]. Geology in China, (2):129-134(in Chinese with English abstract).
Li Yujing, Wang Yufang, Xu Guoxin, Li Zhibin, Qi Yunfei, Sun Jinlong, Zhao Bingang, Zhang Bo, Yue Yue. 2018. Geochronology, geochemical characteristics in the Fenshuiling complex in the East Hebei Province and its significance[J]. Acta Geologica Sinica, 92(9):1904-1917(in Chinese with English abstract).
Li Zuochen, Pei Xianzhi, Li Ruibao, Pei Lei, Hu Bo, Liu Chengjun, Chen Guochao, Chen Youxin. 2013. LA-ICP-MS zircon U-Pb dating, geochemistry of the Mishuling intrusion in western Qinling and their tectonic significance[J]. Acta Petrologica Sinica, 29(8):2617-2634(in Chinese with English abstract). http://cn.bing.com/academic/profile?id=a005d4d29e2426b330b88b0e1949f498&encoded=0&v=paper_preview&mkt=zh-cn
Liu Mingqiang, Zhu Yongxin.2018.Zircon LA-ICP-MS U-Pb dating of the porphyritic monzonitic granite from Southwest Hongyanjing in Beishan Area, Gansu Province and its significance[J]. Northwestern Geology, 51(1):23-33(in Chinese with English abstract).
Liu Shuwen, Yang Pengtao, Li Qiugen, Wang Zongqi, Zhang Wanyi, Wang Wei. 2011. Indosinian granitic magmatism and orogenic processes in the middle Qinling Mountains[J]. Journal of Jilin University (Earth Science Edition), 41(6):1928-1943 (in Chinese with English abstract).
Liu Yongsheng, Hu Zhaochu, Gao Shan.2008. In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J]. Chemical Geology, 257:34-43. https://www.sciencedirect.com/science/article/pii/S0009254108003501
Liu Yongsheng, Hu Zhaochu, Zong Keqing. 2010. Reappraisement and refinement of zircon U-Pb isotope and trace element analyses by LA-ICP-MS[J]. Chinese Science Bulletin, 55(15):1535-1546. https://link.springer.com/article/10.1007/s11434-010-3052-4
Pieter Vermeesch. 2018. Isoplot R:A free and open toolbox for geochronology[J]. Geoscience Frontiers, 9(5):1479-1493. https://www.ucl.ac.uk/~ucfbpve/papers/VermeeschGSF2018.pdf
Qin Jiangfeng, Lai Shaocong, Li Yongfeng. 2007. Genesis of the Indosinian Guangtoushan adakitic biotite plagiogranite in the Mianxian-Lueyang (Mianlue) suture, South Qinling, China, and its tectonic implications[J]. Geological Bulletin of China, (4):466-471(in Chinese with English abstract).
Sun S S, Mc Donough W F. 1989. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes[C]//Saunders A D, Norry M J. (eds.). Magmatism in the Ocean Basins. London: Geological Society Special Publication, 42(1): 313-345.
Wang Dezi, Liu Changshi. 1993. The contrast between Tonglu I-type and Xiangshan S-type clastoporphyritic lava[J]. Acta Petrologica Sinica, 9(1):44-54(in Chinese with English abstract).
Wang Xiaoxia, Wang Tao, Zhang Chengli. 2015. The granitic magmatism and orogenic belt evolution of the Qinling orogenic belt[J].Science in China:Earth Science, 45(8):1109-1125(in Chinese with English abstract).
Wang Zhaofei, Sui Qinglin, He Yongkang. 2019. Geochronology, geochemistry and Hf isotopic compositions of the granodiorite in the Shazigou copper deposit, West Kunlun[J]. Northwestern Geology, 52(3):90-110(in Chinese with English abstract).
Wu Fuyuan, Li Xianhua, Yang Jinhui, Zheng Yongfei. 2007.Discussions on the petrogenesis of granites[J].Acta Petrologica Sinica, 23 (6):1217-1238 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-YSXB200706000.htm
Wu Guang, Chen Yanjing, Sun Fengyue, Li Jingchun, Li Zhitong, Wang Xijin. 2008. Geochemistry of the Late Jurassic granitoids in the northern end area of Da Hinggan Mountains and their geological and prospecting implications[J]. Acta Petrologica Sinica, 24(4):899-910. http://en.cnki.com.cn/Article_en/CJFDTOTAL-YSXB200804029.htm
Wu Yuanbao, Zheng Yongfei. 2004. The research of zircon genetic mineralogy and its limitations on U-Pb age interpretation[J]. Chinese Science Bulletin, 49:1589-1604 (in Chinese).
Yang Pengtao, Liu Shuwen, Li Qiugen, Wang Zongqi, Zhang Fan, Wang Wei. 2013. Chronology and petrogenesis of the Hejiazhuang granitoid pluton and its constraints on the Early Triassic tectonic evolution of the South Qinling Belt[J]. Science China:Earth Sciences, 57(2):232-246(in Chinese with English abstract). https://ui.adsabs.harvard.edu/abs/2014ScChD..57..232Y/abstract
Yao Huijiang, Guo Dongjin, Shi Yongliao, Qing Zhou, Peng Zhao. 2010. Geochemical and Sr-Nd-Hf isotopic constraints on the origin of late Triassic granitoids from the Qinling orogeny, central China:Implications for a continental arc to continent-continent collision[J]. Lithos, 117:183-197. https://ui.adsabs.harvard.edu/abs/2010Litho.117..183J/abstract
Yuan Yongsheng, Liu Sheng, Nan Zhenglu, Zhan Huasi. 2018. Zircon U-Pb dating, Hf isotope characteristics and geological significance of the Yong'an pluton in southeastern Guangxi[J]. Acta Petrologica et MineralogicA, 37(6):869-883 (in Chinese with English abstract).
Zhang Chengli, Wang Tao, Wang Xiaoxia.2008.Origin and tectonic setting of the early Mesozoic granitoids in Qinling orogenic belt[J]. Geological Journal of China Universities, (3):304-316(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-GXDX200803006.htm
Zhang Guowei, Dong Yunpeng, Yao Anping. 1997. The crustal compositions, structures and tectonic evolution of the Qinling orogenic belt[J]. Geology of Shaanxi, (2):1-14(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SXDY199702000.htm
Zhang Qi, Wang Yan, Qian Qing. 2001. The characteristics and tectonic-metallogenic significances of the adakites in Yanshan period from eastern China[J]. Acta Petrologica Sinica, 17(2):236-244(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-YSXB200102007.htm
Zhao Yuandong, Che Jiying, Xu Fengming, Zhu Qun, Wang Kuiliang. 2018. Late Jurassic adakitic granites in northeastern Xing'an block:Geochronology and geochemical characteristics and tectonic significance[J]. Earth Science Frontiers, 25(6):240-253(in Chinese with English abstract).
陈绍聪, 王义天, 胡乔青, 张娟, 王瑞廷, 王长安, 刘协鲁, 欧阳升.2018.西秦岭凤太矿集区花岗闪长斑岩脉的成因类型和年龄及其地质意义[J].地球学报, 39(1):14-26. http://www.cnki.com.cn/Article/CJFDTotal-DQXB201801002.htm
葛小月, 李献华, 陈志刚, 李伍平.2002.中国东部燕山期高Sr低Y型中酸性火成岩的地球化学特征及成因:对中国东部地壳厚度的制约[J].科学通报, (6):474-480. http://www.cnki.com.cn/Article/CJFDTotal-KXTB200206021.htm
黄邦毅, 汪龙, 辛宇佳, 覃敢. 2015.西秦岭造山带天子山埃达克岩地球化学特征及Cu-Au成矿[J].南方金属, (5):13-16. http://www.cnki.com.cn/Article/CJFDTotal-NFGT201505004.htm
金维浚, 张旗, 何登发, 贾秀勤. 2005.西秦岭埃达克岩的SHRIMP定年及其构造意义[J].岩石学报, (3):959-966. http://www.cnki.com.cn/Article/CJFDTotal-YSXB200503034.htm
金性春. 1990.俯冲作用及其与构造旋回的关系[J].海洋通报, (2):77-83. http://www.cnki.com.cn/Article/CJFDTotal-HUTB199002013.htm
巨银娟, 王邢颖, 张泽中.2018.西秦岭天水地区晚三叠世柴家庄二长花岗岩及其暗色包体地球化学——岩石成因及岩浆混合作用[J].地质与资源, 27(1):41-47. http://www.cnki.com.cn/Article/CJFDTotal-GJSD201801005.htm
雷敏. 2010秦岭造山带东部花岗岩成因及其与造山带构造演化的关系[D].北京: 中国地质科学院.
http://cdmd.cnki.com.cn/Article/CDMD-82501-2011012326.htm 李三忠, 张国伟, 李亚林, 赖绍聪, 李宗会. 2002.秦岭造山带勉略缝合带构造变形与造山过程[J].地质学报, (4):469-483. http://www.cnki.com.cn/Article/CJFDTotal-DZXE200204009.htm
李曙光, 孙卫东, 张国伟, 陈家义, 杨永成. 1996.南秦岭勉略构造带黑沟峡变质火山岩的年代学和地球化学——古生代洋盆及其闭合时代的证据[J].中国科学, (3):223-230. http://www.cnki.com.cn/Article/CJFDTotal-JDXK199603004.htm
李亚林, 李三忠, 张国伟. 2002.秦岭勉略缝合带组成与古洋盆演化[J].中国地质, (2):129-134. http://geochina.cgs.gov.cn/geochina/ch/reader/view_abstract.aspx?file_no=20020204&flag=1
李玉静, 王玉芳, 徐国新, 李智斌, 齐云飞, 孙金龙, 赵丙刚, 张勃, 越悦. 2018.冀东分水岭岩体锆石U-Pb年代学、地球化学特征及地质意义[J].地质学报, 92(9):1904-1917. http://www.geojournals.cn/dzxb/ch/reader/view_abstract.aspx?file_no=2018158
李佐臣, 裴先治, 李瑞保, 裴磊, 胡波, 刘成军, 陈国超, 陈有炘. 2013.西秦岭糜署岭花岗岩体年代学、地球化学特征及其构造意义[J].岩石学报, 29(8):2617-2634. http://www.cnki.com.cn/Article/CJFDTotal-YSXB201308001.htm
刘明强, 朱永新. 2018.甘肃北山红岩井西南似斑状二长花岗岩LA-ICP-MS锆石U-Pb定年及其地质意义[J].西北地质, 51(1):23-33. http://www.cnki.com.cn/Article/CJFDTotal-XBDI201801004.htm
刘树文, 杨朋涛, 李秋根, 王宗起, 张万益, 王伟. 2011.秦岭中段印支期花岗质岩浆作用与造山过程[J].吉林大学学报(地球科学版), 41(6):1928-1943. https://xueshu.baidu.com/usercenter/paper/show?paperid=f2dc381bd8cb1c58c92e7cbef11a9b46&site=xueshu_se
秦江锋, 赖绍聪, 李永飞. 2007.南秦岭勉县-略阳缝合带印支期光头山埃达克质花岗岩的成因及其地质意义[J].地质通报, (4):466-471. http://www.cnki.com.cn/Article/CJFDTotal-ZQYD200704012.htm
王德滋, 刘昌实. 1993.桐庐Ⅰ型和相山S型两类碎斑熔岩对比[J].岩石学报, 9(1):44-54. http://www.cnki.com.cn/Article/CJFDTotal-YSXB199301004.htm
王晓霞, 王涛, 张成立. 2015.秦岭造山带花岗质岩浆作用与造山带演化[J].中国科学:地球科学, 45(8):1109-1125. http://www.cnki.com.cn/Article/CJFDTotal-JDXK201508003.htm
王钊飞, 隋清霖, 贺永康. 2019.西昆仑沙子沟铜矿区花岗闪长岩年代学、地球化学及Hf同位素特征[J].西北地质, 52(3):90-110. http://www.cnki.com.cn/Article/CJFDTotal-XBDI201903010.htm
吴福元, 李献华, 杨进辉, 郑永飞. 2007.花岗岩成因研究的若干问题[J].岩石学报, (6):1217-1238. https://xueshu.baidu.com/usercenter/paper/show?paperid=c0c14ff03d3612b1ee6a190f4aa6f27b&site=xueshu_se
吴元保, 郑永飞. 2004.锆石成因矿物学研究及其对U-Pb年龄解释的制约.科学通报, 49:1589-1604 http://www.cnki.com.cn/Article/CJFDTotal-KXTB200416001.htm
武广, 陈衍景, 孙丰月, 李景春, 李之彤, 王希今. 2008.大兴安岭北端晚侏罗世花岗岩类地球化学及其地质和找矿意义[J].岩石学报, 24(4):899-910. http://www.cnki.com.cn/Article/CJFDTotal-YSXB200804029.htm
杨朋涛, 刘树文, 李秋根, 王宗起, 张帆, 王伟. 2013.何家庄岩体的年龄和成因及其对南秦岭早三叠世构造演化的制约[J].中国科学:地球科学, 43(11):1874-1892. https://xueshu.baidu.com/usercenter/paper/show?paperid=c174c1349e9d487a4f708e0f0d270fd4&site=xueshu_se
袁永盛, 刘胜, 南争路, 詹华思. 2018.桂东南永安岩体锆石U-Pb测年、Hf同位素特征及其地质意义[J].岩石矿物学杂志, 37(6):869-883. http://www.cnki.com.cn/Article/CJFDTotal-YSKW201806001.htm
张成立, 王涛, 王晓霞. 2008.秦岭造山带早中生代花岗岩成因及其构造环境[J].高校地质学报, (3):304-316. http://www.cnki.com.cn/Article/CJFDTotal-GXDX200803006.htm
张国伟, 董云鹏, 姚安平. 1997.秦岭造山带基本组成与结构及其构造演化[J].陕西地质, (2):1-14. http://www.cnki.com.cn/Article/CJFD1997-SXDY199702000.htm
张旗, 王焰, 钱青.2001.中国东部埃达克岩的特征及其构造成矿意义[J].岩石学报, 17(2):236-244. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-DZDQ200112001035.htm
赵院冬, 车继英, 许逢明, 朱群, 王奎良. 2018.兴安地块东北部晚侏罗世C型埃达克质花岗岩年代学、地球化学特征及构造环境意义[J].地学前缘, 25(6):240-253. https://www.zhangqiaokeyan.com/academic-journal-cn_earth-science-frontiers_thesis/0201270242120.html
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