[1]钱 烨,赵昌吉,张 涛,等.吉林中部早侏罗世A型花岗岩的地球化学特征及地质意义[J].黑龙江科技大学学报,2021,31(05):562-568,577.[doi:10.3969/j.issn.2095-7262.2021.05.005 ]
 Qian Ye,Zhao Changji,Zhang Tao,et al.Geochemical characteristics and geological significance of Early Jurassic A type granite[J].Journal of Heilonhjiang Institute of Science and Technology,2021,31(05):562-568,577.[doi:10.3969/j.issn.2095-7262.2021.05.005 ]
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吉林中部早侏罗世A型花岗岩的地球化学特征及地质意义()
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《黑龙江科技大学学报》[ISSN:2095-7266/CN:2301588/TD]

卷:
31
期数:
2021年05
页码:
562-568,577
栏目:
出版日期:
2021-09-30

文章信息/Info

Title:
Geochemical characteristics and geological significance of Early Jurassic A type granite
文章编号:
2095-7262(2021)05-0562-07 文献标志码:A
作者:
钱 烨1 赵昌吉1 张 涛2 张学海3 刘学生3 王永胜3
(1.吉林大学 地球科学学院, 长春 130061; 2.青岛地质工程勘察院(青岛地质勘察开发局),山东 青岛 266071; 3.吉林省地质调查院, 长春 130102)
Author(s):
Qian Ye1 Zhao Changji1 Zhang Tao2 Zhang Xuehai3 Liu Xuesheng3 Wang Yongsheng3
(1.College of Earth Science Jilin University, Changchun 130061, China; 2.Qingdao Geo-engineering Exploration Institute(Qingdao Geological Exploration & Development Bureau), Qingdao 266071, China; 3.Geological Survey Insititute of Jilin Province, Changchun 130102, China)
关键词:
A型花岗岩 早侏罗世 地球化学 U-Pb同位素 古太平洋
Keywords:
A-type granite Early Jurassic Geochemistry U-Pb isotopic Paleo-Pacific
分类号:
P597; P588
DOI:
10.3969/j.issn.2095-7262.2021.05.005
文献标志码:
A
摘要:
为明确古太平洋向欧亚大陆俯冲开始的时间,以吉林中部老少沟岩体二长花岗岩为研究对象,运用U-Pb同位素年代学和全岩地球化学等方法,研究其形成的构造环境。结果表明:老少沟岩体形成于早侏罗世,加权平均年龄为(176.3±1.1)Ma; 地球化学特征显示老少沟岩体为富硅、富全碱、高全铁、贫镁、钙、磷的特征,属于过铝质高钾钙碱性系列岩石; 岩体富集轻稀土,轻重稀土分馏强烈,微量元素上富集大离子亲石元素(Rb、K、Th),亏损Sr、Ba元素和高场强元素(Nb、P、Ti)等特征,显示老少沟岩体为铝质A型花岗岩。吉黑东部和小兴安岭—张广才岭两条早侏罗世岩浆带分别显示了火山弧和弧后伸展的特征,研究认为古太平洋板块向欧亚板块俯冲开始于早侏罗世,老少沟岩体形成俯冲背景的弧后伸展环境。
Abstract:
This paper aims to clarify the starting time of the subduction of the Paleo-Pacific Ocean to the Eurasian continent. The clarification is achieved by determining the tectonic setting of its formation by taking as the research object the monzonitic granite from the Laoshaogou plutone in central Jilin and using U-Pb isotopic chronology and whole rock geochemistry.The results show that the Laoshaogou plutone formed in the Early Jurassic has weight average age of(176.3±1.1)Ma; the geochemical characteristics reveal the Laoshaogou pluton as being rich in silicon、total alkali and high total iron, poor in magnesium、calcium and phosphorus, and belonging to the peraluminous high-potassium calcium-alkaline series of rocks; the rock mass is enriched in LREE, with LREE and HREE being strongly fractionated; the trace elements are enriched in large ion lithophiles such as Rb, K, Th, and are depleted in Sr, Ba and high field strength elements Nb, P, Ti, etc.These characteristics show that Laoshaogou rock mass is aluminum A-type granite.The two Early Jurassic magma belts in eastern Jihei and Xiaoxing' anling-Zhangguangcailing respectively show the characteristics of volcanic arc and back-arc extension.The study concludes that the subduction of the Paleo-Pacific plate to the Eurasian plate began in the Early Jurassic and the Laoshaogou rock mass forms a back-arc extensional environment with a subduction background.

参考文献/References:

[1] Wu F Y, Sun D Y, Ge W C, et al. Geochronology of the Phanerozoic granitoids in northeastern China[J]. Journal of Asian Earth Sciences, 2011, 41(1): 1-30.
[2] Wu F Y, Yang J H, Lo C H, et al. Jiamusi Massif in China:A Jurassic Accret in the Western Pacific [J]. The Island Arc, 1990, 16: 156-172.
[3] Zhou J B, Wilde S A, Zhao G C, et al. Was the easternmost segment of the Central Asian Orogenic Belt derived from Gondwana or Siberia: An intriguing dilemma?[J]. Journal of Geodynamics, 2010, 50(3): 300-317.
[4] 周建波, 曾维顺, 曹嘉麟, 等. 中国东北地区的构造格局与演化:从500 Ma到180 Ma[J].吉林大学学报(地球科学版), 2012, 42(5): 1298-1316.
[5] Maniar P D, Piccoli P M. Tectonic discrimination of granitoid[J]. Geological Society of America Bulletin, 1989, 101(5): 635-643.
[6] Ernst W G, Tsujimori T, Zhang R, et al. Permo-triassic collision, subduction-zone metamorphism, and tectonic exhumation along the East Asian continental margin[J]. Annual Review of Earth & Planetary Sciences, 2007, 35(1): 73-110.
[7] Sun M D, Xu Y G, Wilde S A, et al. The Permian Dongfanghong island-arc gabbro of the Wandashan Orogen, NE China: Implications for Paleo-Pacific subduction[J]. Tectonophysics, 2015, 659: 122-136.
[8] 赵春荆, 彭玉鲸, 党增欣, 等. 吉黑东部构造格架及地壳演化[M]. 沈阳: 辽宁大学出版社, 1996.
[9] Wilde, S A. Final amalgamation of the Central Asian Orogenic Belt in NE China: Paleo-Asian Ocean closure versus Paleo-Pacific plate subduction——A review of the evidence[J]. Tectonophysics, 2015, 662: 345-362.
[10] Yang H, Ge W, Zhao G, et al. Early Permian-Late Triassic granitic magmatism in the Jiamusi-Khanka Massif, eastern segment of the Central Asian Orogenic Belt and its implications[J]. Gondwana Research, 2015, 27(4): 1509-1533.
[11] 孙德有, 吴福元, 高 山, 等. 吉林中部晚三叠世和早侏罗世两期铝质A型花岗岩的厘定及对吉黑东部构造格局的制约[J]. 地学前缘, 2005, 12(2): 263-275.
[12] 裴福萍, 许文良, 杨德彬, 等. 松辽盆地南部中生代火山岩:锆石U-Pb年代学及其对基底性质的制约[J]. 地球科学: 中国地质大学学报, 2008, 33(5): 603-617.
[13] Xu W L, Pei F P, Feng W, et al. Spatial-temporal relationships of Mesozoic volcanic rocks in NE China: Constraints on tectonic overprinting and transformations between multiple tectonic regimes[J]. Journal of Asian Earth Sciences, 2013, 74: 167-193.
[14] Zhou J B, Wilde S A, Zhang X Z, et al. The onset of Pacific margin accretion in NE China: Evidence from the Heilongjiang high-pressure metamorphic belt[J]. Tectonophysics, 2009, 478(3/4): 230-246.
[15] Guo F. Geological Records of the Pacific Plate Subduction in the Northeast Asian Continental Margin: An Overview[J]. Bulletin of Mineralogy,Petrology and Geochemistry, 2016, 35(6): 1082-1089.
[16] Yuan H, Gao S, Liu X, et al. Accurate U-Pb age and trace element determinations of Zircon by laser ablation-Inductively coupled plasma-Mass spectrometry[J]. Geostandards and Geoanalytical Research, 2010, 28(3): 353-370.
[17] Liu Y, Hu Z, Gao S, et al. In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J]. Chem.Geol. 2008, 257(1): 34-43.
[18] Liu Y, Gao S, Hu Z, et al. Continental and oceanic crust recycling-induced melt-Pperidotite interactions in the Trans-North China Orogen: U-Pb dating, Hf Isotopes and trace elements in Zircons from Mantle Xenoliths[J].Journal of Petrology, 2010, 51(1/2): 537-571.
[19] Ludwig K R.Using Isoplot /EX,version 2,a geochronological Tool-kit for Microsoft Excel[M].Berkeley Geochronological Center Spe-cial Publication 1a, 1999.
[20] Eby, Nelson G. Chemical subdivision of the A-type granitoids:Petrogenetic and tectonic implications[J]. Geology, 1992, 20(7): 641-644.
[21] 卢成忠, 董传万, 顾明光, 等. 浙江道林山新元古代A型花岗岩的发现及其构造意义[J]. 中国地质, 2006(5): 1044-1051.
[22] 吴锁平, 王梅英, 戚开静. A型花岗岩研究现状及其述评[J]. 岩石矿物学杂志, 2007(1): 57-66.
[23] Pearce J A, Harris N B W, Tindle A G. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks[J]. Jour Petrol, 1984(4): 956-983.
[24] 邱检生, 肖 娥, 胡 建, 等. 福建北东沿海高分异I型花岗岩的成因: 锆石U-Pb年代学,地球化学和Nd-Hf同位素制约[J]. 岩石学报, 2008, 24(11): 2468-2484.
[25] 邱检生, 胡 建, 王孝磊, 等. 广东河源白石冈岩体:一个高分异的I型花岗岩[J]. 地质学报, 2005, 79(4): 503-514.
[26] Whalen J B, Currie K L, Chappell B W, A-type granites: geochemical characteristics, discrimination and petrogenesis[J]. Contributions to Mineralogy and Petrology, 1987, 95(4): 407-419.
[27] 贾小辉, 王 强, 唐功建. A型花岗岩的研究进展及意义[J]. 大地构造与成矿学, 2009, 33(3): 465-480.
[28] 陈建林, 郭原生, 付善明. 花岗岩研究进展——ISMA花岗岩类分类综述[J]. 甘肃地质, 2004, 13(1): 67-73.
[29] 吴福元, 李献华, 杨进辉, 等. 花岗岩成因研究的若干问题[J]. 岩石学报, 2007(6): 1217-1238.
[30] Wang F, Zhou X H, Zhang L C, et al. Late Mesozoic volcanism in the Great Xing'an Range(NE China): Timing and implications for the dynamic setting of NE Asia[J]. Earth & Planetary Science Letters, 2006, 251(1): 179-198.
[31] 刘金龙, 孙丰月, 王英德, 等. 内蒙古乌拉特中旗哈达呼舒基性岩体形成的构造背景与古亚洲洋的早期俯冲历史[J]. 地球科学, 2016,14(12): 2019-2030.
[32] 孙永刚, 李碧乐, 王聚胜, 等. 吉林中部江密峰花岗闪长岩锆石U-Pb年代学和岩石地球化学特征[J]. 世界地质, 2019, 38(4): 931-943.
[33] 孙永刚, 王聚胜, 张 辉, 等. 吉林中部西砬子沟花岗闪长岩锆石U-Pb年龄及岩石地球化学特征[J]. 世界地质, 2019, 38(1): 68-79.
[34] 孙永刚, 李碧乐, 王永胜, 等. 吉林中部敖花村角闪辉长岩锆石U-Pb定年、Hf同位素和岩石地球化学特征[J].岩石矿物学杂志, 2021, 40(2): 257-268.
[35] 许文良, 葛文春, 裴福萍, 等. 东北地区中生代火山作用的年代学格架及其构造意义[J]. 矿物岩石地球化学通报, 2008, 27(S1): 286-287.
[36] Yu J J, Feng W, Xu W L, et al. Early Jurassic mafic magmatism in the Lesser Xing'an-Zhangguangcai Range, NE China, and its tectonic implications: Constraints from zircon U-Pb chronology and geochemistry[J]. Lithos, 2012(142/143): 256-266.
[37] 许文良, 王 枫, 裴福萍, 等. 中国东北中生代构造体制与区域成矿背景:来自中生代火山岩组合时空变化的制约[J]. 岩石学报, 2013, 29(2): 339-353.
[38] 唐 杰, 许文良, 王 枫, 等. 古太平洋板块在欧亚大陆下的俯冲历史: 东北亚陆缘中生代-古近纪岩浆记录[J]. 中国科学:地球科学, 2018, 48(5): 549-583.

备注/Memo

备注/Memo:
收稿日期: 2021-05-10
第一作者简介: 钱 烨(1979-),男,湖北省武汉人,副教授,博士,研究方向:矿物学、岩石学、矿床学专业,E-mail:393322784@qq.com。
编辑 晁晓筠 校对 张永彬
更新日期/Last Update: 2021-09-25