FORMING AGE AND GEOCHEMISTRY OF THE VOLCANIC ROCKS FROMMANKETOUEBO FORMATION IN OROQEN QI, DAXINGANLING MOUNTAINS
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摘要:
对大兴安岭鄂伦春地区满克头鄂博组火山岩年代学与岩石地球化学特征进行分析，锆石U－Pb测年结果表明火山岩形成时代为晚侏罗世（152.9±1.7 Ma）. 地球化学特征表明该组火山岩具有富硅、碱，贫钙、镁特征，且具较低Mg#值及极低的Cr、Co、Ni值的特点. 微量元素相对富集大离子亲石元素（LILE）K、Rb、Ba和LREE，亏损高场强元素Nb、Ta、Ti. 火山岩具有地壳源区特征，Rb/Sr值平均为0.66，远高于N-MORB（0.03）、OIB（0.047）和E-MORB（0.033），Ti/Zr值平均为13.94，与壳源岩浆的范围（＜20）一致，表明该类岩石的原始岩浆起源于地壳岩石的部分熔融. 根据岩石地球化学特征，结合区域已有研究资料，本区满克头鄂博组火山岩的形成应与蒙古－鄂霍次克洋向南东方向俯冲作用有关.
Abstract:The zircon U-Pb dating result indicates that the volcanic rocks from Manketouebo Formation in Oroqen area of Daxinganling Mountains were formed in the Late Jurassic (152.9±1.7 Ma) based on the analysis of chronology and geochemical characteristics of the rocks. The volcanic rocks are characterized by rich Si and alkali, poor Ca and Mg, low Mg# and very low Cr, Co and Ni contents, with enrichment of LILEs (K, Rb and Ba) and LREE, and depletion of HFSEs (Nb, Ta and Ti) in trace elements. The volcanic rocks have the characteristics of crust source, with Rb/Sr value of 0.66 averagely, much higher than N-MORB(0.03), OIB(0.047) and E-MORB(0.033).The average TiZr value of 13.94 is consistent with the range of crust-derived magma (< 20), indicating that the primary magma of volcanic rocks originated from partial melting of crustal rocks. According to the rock geochemical characteristics and regional existing research data, it is considered that the formation of volcanic rocks in the study area is related to the southeastward subduction of Mongolian-Okhotsk Ocean.
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Key words:
- Manketouebo Formation /
- zircon U-Pb dating /
- geochemistry /
- Oroqen area /
- Daxinganling Mountains
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[1] 孙德有, 苟军, 任云生, 等. 满洲里南部玛尼吐组火山岩锆石U-Pb年龄与地球化学研究[J]. 岩石学报, 2011, 27(10): 3083-3094. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201110024.htm
Sun D Y, Gou J, Ren Y S, et al. Zircon U-Pb dating and study on geochemistry of volcanic rocks in Manitu Formation from southern Manchuria, Inner Mongolia[J]. Acta Petrologica Sinica, 2011, 27 (10): 3083-3094. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201110024.htm
[2] 内蒙古自治区地质矿产局. 内蒙古自治区岩石地层[M]. 武汉: 中国地质大学出版社, 1996: 10-11.
Bureau of Inner Mongolia Geology and Mineral Resources. Lithology and stratigraphy of Inner Mongolia Autonomous Region[M]. Wuhan: China University of Geosciences Press, 1996: 10-11. (in Chinese)
[3] 黑龙江省地质矿产局. 黑龙江省岩石地层[M]. 武汉: 中国地质大学出版社, 1997: 142-149.
Heilongjiang Bureau of Geology and Mineral Resources. Lithology and stratigraphy of Heilongjiang Province[M]. Wuhan: China University of Geosciences Press, 1997: 142-149. (in Chinese)
[4] 刘凯, 吴涛涛, 刘金龙, 等. 大兴安岭北段图里河地区满克头鄂博组火山岩年代学及地球化学[J]. 中国地质, 2018, 45(2): 367- 376. https://www.cnki.com.cn/Article/CJFDTOTAL-DIZI201802012.htm
Liu K, Wu T T, Liu J L, et al. Geochronology and geochemistry of volcanic rocks in Manketou'ebo Formation of Tulihe area, northern Da Hinggan Mountains[J]. Geology in China, 2018, 45(2): 367-376. https://www.cnki.com.cn/Article/CJFDTOTAL-DIZI201802012.htm
[5] 杨海星, 高利东, 高玉石, 等. 内蒙古霍林河地区晚石炭世本巴图组火山岩年代学、地球化学特征及构造背景[J]. 中国地质, 2020, 47(4): 1173-1185. https://www.cnki.com.cn/Article/CJFDTOTAL-DIZI202004018.htm
Yang H X, Gao L D, Gao Y S, et al. The chronology, geochemical characteristics and tectonic setting of the volcanic rocks in the Benbatu Formation of Huolinhe area, Inner Mongolia[J]. Geology in China, 2020, 47(4): 1173-1185. https://www.cnki.com.cn/Article/CJFDTOTAL-DIZI202004018.htm
[6] 秦涛, 崔天日, 李林川, 等. 大兴安岭北段扎兰屯地区林西组碎屑锆石U-Pb年代学特征及其地质意义[J]. 地质与资源, 2018, 27 (4): 337-348, 359. doi: 10.3969/j.issn.1671-1947.2018.04.004 http://manu25.magtech.com.cn/Jweb_dzyzy/CN/abstract/abstract8476.shtml
Qin T, Cui T R, Li L C, et al. Detrital zircon U-Pb chronology of the Linxi Formation in Zhalantun area, northern Daxinganling Mountains: Geological implications[J]. Geology and Resources, 2018, 27(4): 337-348, 359. doi: 10.3969/j.issn.1671-1947.2018.04.004 http://manu25.magtech.com.cn/Jweb_dzyzy/CN/abstract/abstract8476.shtml
[7] 唐杰, 许文良, 王枫, 等. 张广才岭帽儿山组双峰式火山岩成因: 年代学与地球化学证据[J]. 世界地质, 2011, 30(4): 508-520. doi: 10.3969/j.issn.1004-5589.2011.04.002
Tang J, Xu W L, Wang F, et al. Petrogenesis of bimodal volcanic rocks from Maoershan Formation in Zhangguangcai Range: Evidence from geochronology and geochemistry[J]. Global Geology, 2011, 30 (4): 508-520. doi: 10.3969/j.issn.1004-5589.2011.04.002
[8] 郑吉林, 王文东, 杨华本, 等. 大兴安岭北部下侏罗统战备村组的建立及其地质意义[J]. 地质通报, 2016, 35(7): 1106-1114. doi: 10.3969/j.issn.1671-2552.2016.07.006
Zheng J L, Wang W D, Yang H B, et al. The establishment of the Lower Jurassic Zhanbeicun Formation in northern Da Hinggan Mountains and its geological significance[J]. Geological Bulletin of China, 2016, 35(7): 1106-1114. doi: 10.3969/j.issn.1671-2552.2016.07.006
[9] 李中会, 李阳, 李睿杰, 等. 大兴安岭北段三根河林场新民组流纹岩锆石U-Pb定年及地球化学特征[J]. 地质与资源, 2020, 29(4): 310-318. http://manu25.magtech.com.cn/Jweb_dzyzy/CN/abstract/abstract10210.shtml
Li Z H, Li Y, Li R J, et al. Zircon U-Pb dating and geochemistry of the rhyolites from Xinmin Formation in Sangenhe forest farm, Northern Daxinganling Mountains[J]. Geology and Resources, 2020, 29(4): 310-318. http://manu25.magtech.com.cn/Jweb_dzyzy/CN/abstract/abstract10210.shtml
[10] 林强, 葛文春, 孙德有, 等. 中国东北地区中生代火山岩的大地构造意义[J]. 地质科学, 1998, 33(2): 129-139. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX802.000.htm
Lin Q, Ge W C, Sun D Y, et al. Tectonic significance of Mesozoic volcanic rocks in northeastern China[J]. Scientia Geologica Sinica, 1998, 33(2): 129-139. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX802.000.htm
[11] 葛文春, 林强, 孙德有, 等. 大兴安岭中生代玄武岩的地球化学特征: 壳幔相互作用的证据[J]. 岩石学报, 1999, 15(3): 396-407. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB199903007.htm
Ge W C, Lin Q, Sun D Y, et al. Geochemical characteristics of the Mesozoic basalts in Da Hinggan Ling: Evidence of the mantle-crust interaction[J]. Acta Petrologica Sinica, 1999, 15(3): 396-407. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB199903007.htm
[12] 张宏, 马俊孝, 权恒, 等. 大兴安岭北段中生代火山岩形成的动力学环境[J]. 贵金属地质, 1999, 8(1): 56-64. https://www.cnki.com.cn/Article/CJFDTOTAL-GJSD901.012.htm
Zhang H, Ma J X, Quan H, et al. The dynamic background of Mesozoic volcanic activity in northern part of Daxing'anling Mountains[J]. Journal of Precious Metallic Geology, 1999, 8(1): 56-64. https://www.cnki.com.cn/Article/CJFDTOTAL-GJSD901.012.htm
[13] Meng Q R. What drove Late Mesozoic extension of the Northern China-Mongolia tract?[J]. Tectonophysics, 2003, 369(3/4): 155-174.
[14] Wang P J, Chen F K, Shen S M, et al. Geochemical and Nd-Sr-Pb isotopic composition of Mesozoic volcanic rocks in the Songliao Basin, NE China[J]. Geochemical Journal, 2006, 40(2): 149-159. doi: 10.2343/geochemj.40.149
[15] 陈志广, 张连昌, 周新华, 等. 满洲里新右旗火山岩剖面年代学和地球化学特征[J]. 岩石学报, 2006, 22(12): 2971-2986. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200612013.htm
Chen Z G, Zhang L C, Zhou X H, et al. Geochronology and geochemical characteristics of volcanic rocks section in Manzhouli Xinyouqi, Inner-Mongolia[J]. Acta Petrologica Sinica, 2006, 22 (12): 2971-2986. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200612013.htm
[16] 张玉涛, 张连昌, 英基丰, 等. 大兴安岭北段塔河地区早白垩世火山岩地球化学及源区特征[J]. 岩石学报, 2007, 23(11): 2811-2822. doi: 10.3969/j.issn.1000-0569.2007.11.012
Zhang Y T, Zhang L C, Ying J F, et al. Geochemistry and source characteristics of Early Cretaceous volcanic rocks in Tahe, north Da Hinggan Mountain[J]. Acta Petrologica Sinica, 2007, 23(11): 2811-2822. doi: 10.3969/j.issn.1000-0569.2007.11.012
[17] Ying J F, Zhou X H, Zhang L C, et al. Geochronological framework of Mesozoic volcanic rocks in the Great Xing'an Range, NE China, and their geodynamic implications[J]. Journal of Asian Earth Sciences, 2010, 39(6): 786-793. doi: 10.1016/j.jseaes.2010.04.035
[18] 徐美君, 许文良, 孟恩, 等. 内蒙古东北部额尔古纳地区上护林- 向阳盆地中生代火山岩LA-ICP-MS锆石U-Pb年龄和地球化学特征[J]. 地质通报, 2011, 30(9): 1321-1338. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD201109001.htm
Xu M J, Xu W L, Meng E, et al. LA-ICP-MS zircon U-Pb chronology and geochemistry of Mesozoic volcanic rocks from the Shanghulin- Xiangyang basin in Ergun area, northeastern Inner Mongolia[J]. Geological Bulletin of China, 2011, 30(9): 1321-1338. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD201109001.htm
[19] 吴涛涛, 赵东芳, 邵军, 等. 内蒙古比利亚谷铅锌银矿床地质地球化学特征及成因[J]. 中国地质, 2014, 41(4): 1242-1252. https://www.cnki.com.cn/Article/CJFDTOTAL-DIZI201404017.htm
Wu T T, Zhang D F, Shao J, et al. Geological and geochemical characteristics and genesis of the Biliyagu lead-zinc-silver deposit, Inner Mongolia[J]. Geology in China, 2014, 41(4): 1242-1252. https://www.cnki.com.cn/Article/CJFDTOTAL-DIZI201404017.htm
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