Geochemical characteristics and formation environments of metamorphic rocks in the Kanas Group of Altay tectonic belt
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摘要:
阿尔泰造山带喀纳斯群变质岩的地球化学研究表明，该套变质岩的原岩主要为泥质沉积岩，个别为砂质沉积岩，源区物质主要为中—酸性大陆岛弧火山岩，并夹杂少量其他碎屑物。尽管16个样品间岩性有差异，但其化学蚀变指数(CIA)几乎全部小于75，成分变异指数(ICV)接近或大于1，指示源区物质绝大多数经历了温暖、湿润条件下的中等化学风化作用，且成熟度较差，为活动大陆边缘首次沉积的产物。该套变质岩中的La、Ce、∑REE、δEu、LREE/HREE的值显示其原岩主体形成于大陆岛弧背景。其地球化学特征表明，喀纳斯群变质岩很可能沉积于活动大陆边缘的大陆岛弧相关环境，推测喀纳斯群发生沉积作用与变质作用的时间在(550±18)Ma至430 Ma之间；并根据相关对应时间，推测喀纳斯群变质期次为加里东期。
Abstract:The geochemical study of metamorphic rocks of the Kanas Group in Altay tectonic belt shows that the metamorphic rocks are mainly argillaceous sedimentary rocks, with small amounts of sandy sedimentary rocks, Source material is mainly of acidic continental arc volcanic rocks mixed with a small amount of other debris. Although there are differences in lithology between 16 samples, the chemical etching of the variable indexes (CIA) is almost all less than 75, indexes of compositional variation (ICV) are close to or higher than 1, indicating that the source region must have experienced a warm, humid conditions of moderate chemical weathering and the maturity was poor, being the first deposition product of active continental margin. The La, Ce, ∑REE, LREE/HREE, sigma delta Eu values of the metamorphic rocks indicate that the protolith formed in a continental arc setting. These geochemical characteristics suggest that the Kanas Group metamorphic rocks probably deposited on an active continental margin of continental island arc environment. It is inferred that Kanas Group sedimentation and metamorphism occurred between 550±18ma to 430Ma and, according to the corresponding time, the metamorphism of the Kanas Group took place in Caledonian.
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图 2 微量元素原始地幔标准化蛛网图(原始地幔标准化数据引自Thompson, 1982)
Figure 2.
图 3 稀土元素球粒陨石标准化配分曲线图(球粒陨石数据引自McLennan, 1993)
Figure 3.
图 4 喀纳斯群变质岩稀土元素北美页岩标准化配分曲线(北美页岩数据引自Haskin et al., 1968)
Figure 4.
图 10 喀纳斯群变质岩原岩的沉积岩构造环境判别图解(据Roser et al.，1986)
Figure 10.
表 2 阿勒泰喀纳斯群变质岩岩主要化学组成(%)
Table 2. The major chemical compositions (%) of the metamorphic rocks in the Kanas Group of Altay
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表 3 喀纳斯群变质岩主量元素均值与地壳元素丰度比较(%)
Table 3. Comparison of major element abundances between the metamorphic rocks in the Kanas Group and the earth' s crust (%)
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表 4 喀纳斯群变质岩微量元素组成(10-6)
Table 4. The trace element compositions (10-6) of the the metamorphic rocks in the Kanas Group
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表 5 喀纳斯群变质岩稀土元素组成(10-6)
Table 5. Rare earth element compositions (10-6) of the metamorphic rocks in the Kanas Group
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表 6 喀纳斯群变质岩原岩恢复相关系数计算结果
Table 6. The indexes for recovering protoliths of the metamorphic rocks in the Kanas Group
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表 7 喀纳斯群变质岩原岩的构造环境判别
Table 7. The discrimination of protolith tectonic background of the metamorphic rocks in the Kanas Group
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Bhatia M R, Crook K A W. 1986. Trace element characteristics of graywacks and tectonic setting discrimination of sedimentary basins[J]. Contributions to Mineralogy and Petrology, 92:181-193. doi: 10.1007/BF00375292
Cai Keda. 2007. Time of magmatism, Petrogenesis and the Tectonic Implication of the Western Chinese Altai Orogen, Northwest China[D]. Guangzhou Institute of Geochemistry, Chinese Academy of Science(in Chinese with English abstract).
Chai Fengmei, Mao Jingwen, Dong Lianhui. 2007. SHRIMP Zircon U-Pb dating for metarhuolites of the Kangbutiebao formation at the Abagong iron deposit in the southern margin of the Altay, Xinjiang and its geological signficance[J]. Acta Geologica Sinica, 82 (11):1592-1601 (in Chinese with English abstract).
Chai Fengmei, Yang Fuquan, Liu Feng, Geng Xinxia, Jiang Liping, Lv Shuping, Guo Jijun, Chen Bin. 2012. Geochronology and genesis of meta-felsic volcanic rocks from the Kangbutiebao formation in Chonghuer baisn on sourthern margin of Altay, Xinjiang[J]. Geological Review, 58(6):1023-1037 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-DZLP201206004.htm
Chen Bin, Jahn B M, Wang Shiguang. 2012. Nd isotopic characteristics of Palaeozoic metamorphosed edimentary rocks in Altai, Xinjiang, and its restricton on crustal evolution[J]. Science in China(D), 31(3):226-232 (in Chinese).
Han Yinwen, Ma Zhendong. 2003. Geochemistry[M]. Beijing:Geological Publishing House, 204-206 (in Chinese).
Haskin L A, Haskin M A, Frey F A. 1968. Relative and absolute terrestrial abundances of the rare earths[J]. Origin and Distribution of the Elements, 1:889-911. https://www.sciencedirect.com/science/article/pii/B978008012835150074X
He Guoqi, Han Baofu, Yue Yongjun. 1990. Tectonic division and crustal evolution of the Altai Orogenic Belt in China[J]. Geoscience of Xinjiang, 2(9):9-20 (in Chinese with English abstract).
He Guoqi, Li Maosong, Liu Dequan. 1994. Paleozoic crustal evolution and mineralization in Xinjiang of China[M]. Xinjiang People`s Publishing House, Hongkong:Educational and Cultural Press LTD, 1994 (in Chinese).
He Guoqi, Liu Dequan, Li Maosong. 1995. The five stages mode of crust development and metallogenic series of main orogenic belt in Xinjiang[J]. Xinjiang Geology, 13(2):99-194 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-YSXB201301015.htm
Hu Aiqin, Zhang Guoxin, Li Qixin, Fan Sikun, Zhang Qianfeng. 1994.Geological evolution and its relation to mineralization in the northern Xinjiang[J]. Xinjiang Geology, 12(1):32-39 (in Chinese with English abstract). https://rd.springer.com/content/pdf/10.1007/s11771-005-0390-5.pdf
Hu Aiqin, Zhang Guoxin, Chen Yibing, Zhang Qianfeng. 2001. A model of division of the continental crus basement and the time scales of major geological events in the Xinjinag-based on studies isotopic geochronology and geochemistry[J]. Xinjiang Geology, 19(1):12-19 (in Chinese with English abstract). http://en.cnki.com.cn/article_en/cjfdtotal-xjdi200101003.htm
Li Junjian, Zhang Feng, Ren Junping. 2015. Tectonicunits in ChinaMongolia border area and their fundamental characteristics[J]. Geological Bulletin of China. 34(4):636-661 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-ZQYD201504006.htm
Li Tiande, Poliyangsiji B H. 2001. Tectonics and crustal evolution of Altai in China and Kazakhstan[J]. Xinjiang Geology, 19(1):27-32(in Chinese with English abstract). https://www.elsevier.com/books/plate-tectonics-andampamp-crustal-evolution/condie/978-0-08-034874-2
Liu yuan, Yang Jiaxi, Hu Jianmin, Wang Yanfei, Wang Yuan. 2013.Resticting the deposition age of the Kanas Group of Altai tectonic belt and its impications[J]. Acta Petrologic Sinica, 29(3):887-898(in Chinese with English abstract). http://www.oalib.com/paper/1475390
Long Xiaoping, Yuan Chao, Sun Min, Xiao Wenjiao, Lin Shoufa, Wang Yujing, Cai Keda. 2005. Geochemical characteristics and sedimentary environments of Devonian low metamorphic clastic sedimentary rocks in the southern margin of the Chinese Altai, North Xinjing[J]. Acta Pelrologica Sinica, 24 (4); 718-732 (in Chinese with English abstract). http://www.ysxb.ac.cn/ysxb/ch/reader/view_abstract.aspx?file_no=20080411
Long Xiaoping. 2007. The Sedimentary Timing, Source Provenance and Tectonic Setting of Paleozoic Clastic Sedimentary Rocks in the Altai Orogen, Xinjiang[D]. Guangzhou Institute of Geochemistry, Chinese Academy of Science (in Chinese with English abstract).
McLennan S M.1993. Weathering and global denudation[J]. Journal of Geology, . 101(2):295-303. doi: 10.1086/648222
Nesbitt H W, Young G M. 1982. Early Proterozoic climates and plate motions inferred from major element chemistry of lutites[J]. Nature, 299 (5885):715-717. doi: 10.1038/299715a0
Nesbitt H W, Young G M. 1989. Formation and diagenesis of weathering profiles[J]. Journal of geology, 97 (2):129-147. doi: 10.1086/629290
Pan Guitang, Xiao Qinghui, Lu Songnian. 2009. Subdivision of tectonic units in China[J]. Geology in China, 36(1):1-28 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DIZI200901004.htm
Pen Changwen, Gao Zhenjia, Lu Songnian. 1991. Division and Correlation of Precambrain system in Northern Xinjiang[J]. Xinjiang Geology, 9(4):329-339 (in Chinese).
Qu Guosheng, Chong Meiying. 1991. Lead isotope geology and itstectonic implications in Altaids, China[J]. Geoscience, 5 (1):100-110 (in Chinese with English abstract).
Shen Ruifeng, Zhang Hui, Tang Yong, Lv Zhenghang. 2015.Geochemical characteristics of Paleozoic strata and its restriction on depositional environment in Altai orogen, north Xinjiang, China[J]. Geochemica, 44(1):43-60 (in Chinese with English abstract). http://d.wanfangdata.com.cn/Periodical_dqhx201501004.aspx
Roser B P, Korsch R J. 1986. Determination of tectonic setting of sandstone-mudstone suite using SiO2 content and K2O/Na2O ratio[J]. Journal of Geology, 94(5):635-650. doi: 10.1086/629071
Sun Hui, Bian Shaozhi, Song Bairong, Zhao Zhonghua, Sun Shangyu, Zhang Hongbin.2009. Geochemical characteristics of metamorphic rocks in Xinglongtai Buried Mountain, Liaohe depression, Bohai bay basin[J]. Petroleum Geology & Experiment., 31(6):602-607(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-SYSD200906013.htm
Tang Zhongqing. 1989. Method and program for identifying metamorphic rock[J]. Acta Geologica Sichuan, 9(3):63-67 (in Chinese).
Thompson R N. 1982.Magmatism in the British Tertiary volcanic province[J]. Scottish Journal of Geology, 18:49-107. doi: 10.1144/sjg18010049
Wang Lemin, Zhao Tongyang, Zhu Zhixin, Zheng Jiaxing, Tang Zhi, Han Qiong, Li Chongbo, Wang Tuo, Liu Jingwen. 2016. A discussion on Stratigraphy and Age of the"Kanas Group"in the Altai, Xinjiang[J]. Journal of Stratigraphy, 40(1):67-75(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DCXZ201601008.htm
Wang Renmin, He Gaopin, Chen Zhenzhen. 1987. The Plot for Recovering Protoliths of Metamorphic Rocks[M]. Beijing:Geological Publishing House, 1-199 (in Chinese with English abstract).
Weaver C. 1989. Clays, Muds, and Shales:Development in Sedimentology[M]. Amsterdam:Elsevier, 1-210.
Whitney P R, Olmsted J F. 1998. Rare earth element metasomatism in hydrothermal systems:the Willsboro-Lewis wollastonite ores, New York, USA[J]. Geochimica et Cosmochimica Acta, 62(17):2965-2977. doi: 10.1016/S0016-7037(98)00230-0
Xiao Xuchang, Tang Yaoqing, Feng Yimin. 1992. Tectonic Evolution of Northern Xinjiang and Its Adjacent Regions[M]. Beijing:Geological Publishing House, 1-162 (in Chinese).
Xu wei. 2014. The Geochemical Characteristics and Protolith Recovery of Yungou Formation Metamorphic Rock, Western Yunnan[D]. Chengdu University of Technology (in Chinese with English abstract).
Yang Jingkui. 2014. Study on the Geochemical Characteristics of the Metamorphic Series in Upper Section of Shigu Group, Northwestern Yunnan[D]. Kunming University of Technology (in Chinese with English abstract).
Yuan Chao, Sun Min, Xiao Wenjiao. 2005. Zircon U-Pb chronology and geochemistry of granites in southern margin of the Altai Mountains[C]//2005's National Symposium on Petrology and Geodynamics, Paper Abstracts. 418 (in Chinese).
Yuan Chao, Sun Min, Long Xiaoping, Xia Xiaoping, Xiao Wenjiao, Li Xianhua, Lin Shoufa, Cai Keda. 2007. Constraining the deposition time and tectonic background of the Habahe Group of the Altai[J]. Acta Petrologica Sinica, 23(7):1635-1644 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-YSXB200707008.htm
Zheng Changqing, Xu Xuechun, He Zhengwei. 2003. Study on the characteristics and genesis of plagio-monzonitic granitic gneiss in Altai orogen[J]. Journal of Mineralogy and Petrology, 23(2):1-5(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-KWYS200302000.htm
Zhou Gang, Zhang Zhaochong, He Bin.2006. SHRIMP zircon U-Pb dating of Gneisses in the Mayin Obo fault belt, northern Xinjiang, and its significance[J]. Geology in China, 33(6):1209-1216 (in Chinese with English abstract). http://d.wanfangdata.com.cn/Periodical_zgdizhi200606003.aspx
Zhuang Yuxun, Chen Bin. 1992. The formation and evolution of metamorphic tectonic dome of Altai orogenic belt Chinese[J]. Bulletin of the Institute of Geology Chinese Academy of Geological Sciences, 25:37-52 (in Chinese). https://www.researchgate.net/profile/Bo_Zhang116/publication/243333818_Structures_kinematics_thermochronology_and_tectonic_evolution_of_the_Ramba_gneiss_dome_in_the_northern_Himalaya/links/54a6980c0cf257a6360a81f9.pdf?disableCoverPage=true
Zhuang Yuxun.1994. The metamorphism and tectonic thermal evolution of PTSt-gneiss dome formation mechanism of Altai Chinese orogenic zone[J]. Acta Geologica Sinica, 68 (1):35-47 (in Chinese). https://www.sciencedirect.com/science/article/pii/S1872579107600013
蔡克大. 2007. 阿尔泰造山带西段岩浆活动的时代, 成因机制及其构造意义[D]. 中国科学院广州地球化学研究所.
柴凤梅, 毛景文, 董连慧. 2009.新疆阿尔泰南缘阿巴宫铁矿区康布铁堡组变质火山岩年龄及地质意义[J].地质学报, 82(11):1592-1601. http://d.old.wanfangdata.com.cn/Periodical/dizhixb200811015
柴凤梅, 杨富全, 刘锋, 耿新霞, 姜丽萍, 吕书君, 郭旭吉, 陈斌.2012.阿尔泰南缘冲乎尔盆地康布铁堡组变质酸性火山岩年龄及岩石成因[J].地质论评, 58(6):1023-1037. http://www.oalib.com/paper/4884937
陈斌, Jahn B M, 王式洸. 2001.新疆阿尔泰古生代变质沉积岩的Nd同位素特征及其对地壳演化的制约[J].中国科学(D辑), 31(3):226-232. http://www.oalib.com/paper/4150973
韩吟文, 马振东. 2003.地球化学[M].北京:地质出版社, 204-206.
何国琦, 韩宝福, 岳永君1990.中国阿尔泰造山带的构造分区和地壳演化[J].新疆地质科学, 2(9):9-20. http://www.oalib.com/paper/4893970
何国琦, 李茂松, 刘德权. 1994. 中国新疆古生代地壳演化及成矿[M]. 乌鲁木齐: 新疆人民出版社, 香港: 香港文化教育出版社.
何国琦, 刘德权, 李茂松. 1995.新疆主要造山带地壳发展的五阶段模式及成矿系列[J].新疆地质, 13(2):99-194. http://kns.cnki.net/KCMS/detail/detail.aspx?filename=xjdi199502000&dbname=CJFD&dbcode=CJFQ
胡霭琴, 张国新, 李启新, 范嗣昆, 张前锋. 1994.新疆北部地质演化及其与成矿的关系[J].新疆地质, 12 (1):32-39. http://www.cqvip.com/QK/82738X/199401/4001401551.html
胡霭琴, 张国新, 陈义兵, 张前锋. 2001.新疆大陆基底分区模式和主要地质事件的划分[J].新疆地质, 19(1):12-19. http://www.cqvip.com/QK/82738X/200101/5160087.html
李俊健, 张锋, 任军平. 2015.中蒙边界地区构造单元划分[J].地质通报, 34(4):636-661. http://d.old.wanfangdata.com.cn/Periodical/zgqydz201504006
李天德, 波里扬斯基B H. 2001.中国和哈萨克斯坦阿尔泰大地构造及地壳演化[J].新疆地质, 19(1):27-32. http://d.old.wanfangdata.com.cn/Periodical/xjdz200101005
刘源, 杨家喜, 胡健民, 王雁飞, 王媛. 2013.阿尔泰构造带喀纳斯群时代的厘定及其意义[J].岩石学报, 29(3):887-898. http://d.old.wanfangdata.com.cn/Periodical/ysxb98201303012
龙晓平, 袁超, 孙敏, 肖文交, 林寿发, 王毓婧, 蔡克大. 2005.北疆阿尔泰南缘泥盆系浅变质碎屑沉积岩地球化学特征及其形成环境[J].岩石学报, 24 (4):718-732. http://d.old.wanfangdata.com.cn/Periodical/ysxb98200804011
龙晓平. 2007. 新疆阿尔泰古生代碎屑沉积岩的沉积时代, 物质来源及其构造背景[D]. 中国科学院广州地球化学研究所.
潘桂棠, 肖庆辉, 陆松年. 2009.中国大地构造单元划分[J].中国地质, 36(1):1-28 http://geochina.cgs.gov.cn/ch/reader/create_pdf.aspx?file_no=20090101
彭昌文, 高振家, 陆松年. 1991.新疆北部前寒武系划分和对比[J].新疆地质, 9(4):329-339. http://www.cqvip.com/QK/82738X/199104/1005265680.html
曲国胜, 崇美英. 1991阿尔泰造山带的铅同位素地质及其构造意义[J].现代地质, 5(1):100-110. http://www.cqvip.com/Main/Detail.aspx?id=634009
沈瑞峰, 张辉, 唐勇, 吕正航. 2015.阿尔泰造山带古生代地层的地球化学特征及其对沉积环境的制约[J], 地球化学, 44(1):43-60. http://d.wanfangdata.com.cn/Periodical_dqhx201501004.aspx
孙卉, 边少之, 宋柏荣, 赵中华, 孙尚宇, 张洪彬. 2009.渤海湾盆地辽河坳陷兴隆台潜山变质岩地球化学特征[J].石油实验地质, 31(6):602-607. doi: 10.11781/sysydz200906602
汤中清. 1989.判别变质岩原岩方法及其程序[J].四川地质学报, 9(3):63-67. http://www.cqvip.com/QK/83117X/198903/3001473034.html
王乐民, 赵同阳, 朱志新, 郑加行, 唐智, 韩琼, 李崇博, 王拓, 刘静雯. 2016.新疆阿尔泰山地区"喀纳斯群"的形成时代及其解体方案初论[J].地层学杂志, 40(1):67-75. http://www.cnki.com.cn/Article/CJFDTotal-DCXZ201601008.htm
王仁民, 贺高品, 陈珍珍. 1987.变质岩原岩图解判别法[M].北京:地质出版社, 1-199.
肖序常, 汤耀庆, 冯益民. 1992.新疆北部及其邻区大地构造[M].北京:地质出版社, 1-162.
许威. 2014. 滇西允沟岩组地球化学特征与原岩恢复[D]. 成都理工大学.
杨敬奎. 2014. 滇西北巴迪地区石鼓群上段变质岩系地球化学特征研究[D]. 昆明理工大学.
袁超, 孙敏, 肖文交. 2005. 阿尔泰山南缘花岗岩的锆石U-Pb年代学及其地球化学特征[C]. 2005年全国岩石学与地球动力学研讨会论文摘要. 418.
袁超, 孙敏, 龙晓平, 夏小平, 肖文交, 李献华, 林寿发, 蔡克大. 2007.阿尔泰哈巴河群的沉积时代及其构造背景[J].岩石学报, 23:1635-1644. http://d.old.wanfangdata.com.cn/Periodical/ysxb98200707009
周刚, 张招崇, 何斌. 2006.新疆北部玛因鄂博断裂带中片麻岩锆石U-Pb SHRIMP定年及其地质意义[J].中国地质, 33(6):1209-1216. http://geochina.cgs.gov.cn/ch/reader/view_abstract.aspx?file_no=20060603&flag=1
郑常青, 徐学纯, 何政伟. 2003.阿尔泰造山带晚古生代斜长-二长花岗质片麻岩特征及成因研究[J].矿物岩石, 23(2):1-5. http://cdmd.cnki.com.cn/Article/CDMD-82501-2007213441.htm
庄育勋, 陈斌. 1992.中国阿尔泰造山带递进变质构造穹窿的形成演化[J].中国地质科学院地质研究所所刊, 25:37-52. http://www.oalib.com/paper/4339771
庄育勋. 1994.中国阿尔泰造山带变质作用PTSt演化和热-构造-片麻岩穹窿形成机制[J].地质学报, 68 (1):35-47. http://www.cnki.com.cn/Article/CJFDTotal-XJDI200401004.htm
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