吉林大学学报(地球科学版) ›› 2016, Vol. 46 ›› Issue (5): 1383-1405.doi: 10.13278/j.cnki.jjuese.201605110

• 地质与资源 • 上一篇    下一篇

大兴安岭北部新林地区大乌苏混杂岩锆石U-Pb年代学、地球化学及其地质意义

刘玉1,2, 孙加鹏3, 王献忠1, 张文强1,2, 杨华本1, 梁中恺1,2, 徐立明1,2   

  1. 1. 武警黄金第三支队, 哈尔滨 150086;
    2. 中国地质大学(北京)地球科学与资源学院, 北京 100083;
    3. 吉林大学地球科学学院, 长春 130061
  • 收稿日期:2015-10-11 出版日期:2016-09-26 发布日期:2016-09-26
  • 作者简介:刘玉(1976-),男,工程师,研究生,主要从事地层学方面研究,E-mail:634695201@qq.com
  • 基金资助:

    中国地质调查局项目(1212011220666)

Dawusu Complex of Xinlin District in Northern Greater Hinggan Mountains Zircon U-Pb Chronology,Petrogeochemistry,and Its Geological Implication

Liu Yu1,2, Sun Jiapeng3, Wang Xianzhong1, Zhang Wenqiang1,2, Yang Huaben1, Liang Zhongkai1,2, Xu Liming1,2   

  1. 1. No.3 Gold Geological Party of CAPF, Harbin 150086, China;
    2. School of Earth Science and Resources, China University of Geosciences, Beijing 100083, China;
    3. College of Earth Sciences, Jilin University, Changchun 130061, China
  • Received:2015-10-11 Online:2016-09-26 Published:2016-09-26
  • Supported by:

    Supported by Geological Survey Projects of China Geological Survey(1212011220666)

摘要:

新林地区位于大兴安岭北部,处在塔源-新林-喜桂图断裂之上,西侧为额尔古纳地块,东侧为兴安地块。前人研究认为本区的“倭勒根群”为有序地层,通过野外观察及综合分析,认为本区地层是经历了多期次的变质变形作用,由多个构造岩块堆叠和拼贴起来的非史密斯地层单位。对新林地区大乌苏混杂岩的基质及岩块进行了碎屑锆石LA-ICP-MS U-Pb定年。测试结果显示,岩块中细碧岩的岩浆结晶年龄为(477.3±2.7)Ma,基质中变质石英砂岩的最小峰值年龄为468 Ma,限定其沉积时间为早奥陶世。而本地区二长花岗岩测年的结果为300 Ma,综合文献资料并结合本区构造特点,认为大乌苏混杂岩实际上是一套时间跨距从早奥陶世到晚石炭世的非史密斯地层。地球化学特征上,蛇绿岩残片低SiO2,属钙碱性或拉斑玄武岩系列玄武岩;稀土元素球粒陨石标准化图解中Eu无异常或弱正异常,稀土元素总量变化较大;在微量元素原始地幔标准化图解中,富集Ba、K、Sr等大离子亲石元素,相对亏损Nb、Ta、Zr等高场强元素。可以推测在兴隆-呼玛弧后盆地进一步拉伸过程中,本区形成具有洋壳性质的大洋,同时在岛弧上形成细碧-角斑岩及中基性火山岩,在弧前形成砂泥质浊积岩。

关键词: 大兴安岭北部, 新林地区, 大乌苏混杂岩, 锆石U-Pb定年, 地球化学, 弧前环境

Abstract:

Xinlin district located in the Tayuan-Xinlin-Xiguitu fracture where the west side of Erguna block, the east side of Xing'an block, in northern Greater Hinggan Mountains. Previous research suggests that "Wolegen Group" belongs to the orderly strata. Through field observation and comprehensive analysis, this paper considers that the strata in this area belongs to Non Smith stratigraphic unit by a plurality of tectonic block stacked and collaged, that experienced many times of metamorphic deformation. This paper conducted detrital zircon LA-ICP-MS U-Pb dating on matrix and rock mass of Dawusu complex in Xinlin district. The test results show that the magmatic crystallization age of rock mass in the spilite is (477.3±2.7)Ma,and the minimum peak age of metamorphic quartz sandstone in the matrix is 468 Ma, limiting the deposition time of Early Ordovician. Then, the two granite of local district dating results for 300 Ma, the paper considers that the Dawusu complex is actually a set of Non Smith stratigraphy that age from the Early Ordovician to Late Carboniferous,by based on the literatures and combined with the structural characteristics of the area. Geochemical characteristics show that the the content of SiO2 in ophiolite fragments is low, and it belongs to calc-alkaline or basalt of tholeiite series; The plots of chondrite-normalized REE patterns shows that Eu element is no abnormal or weak positive anomaly; The plots of primitive mantle-normalized trace element patterns shows that the oceanic crust is enriched in Nb,Ta,Zr and other large ion lithophile elements, depleted in Ba,K, Sr and other high field strength element. And it can be speculated that the nature of oceanic crust of the ocean formed in the area,the spilite-keratophyre and intermediate-basic volcanic rock formed in the island arc, and the sandy muddy turbidite formed in the fore-arc during Xinglong-Huma back-arc basin further stretching process.

Key words: northern Greater Hinggan Mountains, Xinlin district, Dawusu complex, zircon U-Pb dating, petrogeochemistry, fore-arc environment

中图分类号: 

  • P588

[1] 黑龙江省地质矿产局.黑龙江省区域地质志[M].北京:地质出版社,1993. Bureau of Geology and Mineral Resources of Heilongjiang.Regional Geology of Heilongjiang Province[M].Beijing:Geological Publishing House,1993.

[2] 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. Bureau of Geology and Mineral Resources of Heilongjiang.Rock Stratigraphy of Heilongjiang Province[M].Wuhan:China University of Geosciences Press,1997.

[3] 张克信,陈能松,王永标,等. 东昆仑造山带非史密斯地层序列重建方法初探[J]. 地球科学:中国地质大学学报,1997,22(4):343-346. Zhang Kexin, Chen Nengsong, Wang Yongbiao, et al. A Preliminary Study on the Reconstruction Method of Non Smith Stratigraphy Sequence of East Kunlun Orogenic Belt[J].Earth Science:Journal of China University of Geosciences, 1997,22(4):343-346.

[4] 殷鸿福, 张克信, 王国灿, 等. 非威尔逊旋回与非史密斯方法:中国造山带研究的理论与方法[J]. 中国区域地质,1998,17(增刊):1-9. Yin Hongfu, Zhang Kexin, Wang Guocan, et al. Non Wilson Cycle and Non Smith Method:The Theory and Method of the Research Chinese Orogenic Belt[J]. Regional Geology of China,1998,17(Sup.):1-9.

[5] 张克信,殷鸿福,朱云海,等. 造山带混杂岩区地质填图理论、方法与实践[M]. 武汉:中国地质大学出版社, 2001. Zhang Kexin, Yin Hongfu, Zhu Yunhai, et al. The Theory, Method and Practice of Geologic Mapping of Melange Orogenic Belt[M]. Wuhan:China University of Geosciences Press, 2001.

[6] 张本仁. 大陆造山带地球化学研究:I. 岩石构造环境地球化学判别的改进[J]. 西北地质,2001(3):1-17. Zhang Benren. Study on Geochemistry of the Continental Orogenic Belt:I. Improved the Geochemistry Discrimination of Rock Tectonic Environment[J]. Northwestern Geology,2001(3):1-17.

[7] Bhatia M R. Plate Tectonics and Geochemical Composi-tion of Sandstones[J]. Jour Geol,1983,91:611-627.

[8] Yong I Lee. Provenance Derived from the Geochemistry of Late Paleozoic-Early Mesozoic Mudrocks of the Pyeongan Supergroup,Korea[J]. Sed Geol,2002,149:219-235.

[9] Dinelli E, Lucchini F, Mordenti A, et al. Geochemist ry of Oligocene-Miocene Sandstones of the Northern Apennines (Italy) and Evolution of Chemical Features in Relation to Provenance Changes[J]. Sed Geol,1999,127:193-207.

[10] Hanafy M H,Abde Kader M M. Provenance,Tectonic Setting and Geochemistry of Greywackes and Silt Stones of the Late Precambrian Hamlnamat Group,Egypt[J].Sed Geol,1998,116:227-250.

[11] 张兴洲,杨宝俊,吴福元,等.中国兴蒙-吉黑地区岩石圈结构基本特征[J].中国地质,2006,33(4):390-396. Zhang Xingzhou,Yang Baojun,Wu Fuyuan,et al.The Lithosphere Structure in the Hingmong-Jihei (Hinggan-Mongolia-Jilin-Heilongjiang) Region,Nor-theastern China[J].Geology in China, 2006,33(4):390-396.

[12] Ludwig K R. Isoplot/Ex(tsv.3.0.).2003.A Geochronological Toolkit for Microsoft Excel[M].Berkeley:Geochronological Center Special Publica-tion,2003:1-55.

[13] 李瑞山.新林蛇绿岩[J].黑龙江地质,1991,2(1):19-32. Li Ruishan. Xinlin Ophiolite[J]. Heilongjiang Geology,1991,2(1):19-32.

[14] Humayun. Geochemical Evidence for Excess Iron in the Mantle Beneath Hawaii[J]. Science 1 October, 2004,306(5693):91-94.

[15] Gale G H,Pearce Julian A.Geochemical Patterns in Norwegian Greenstones[J]. Canadian Journal of Earth Sciences,1982,19(3):385-397.

[16] Roex. Geochemistry,Mineralogy and Petrogenesis of Lavas Erupted Along the Southwest Indian Ridge Between the Bouvet Triple Junction and 11 Degrees East[J]. Journal of Petrology,1983,24(3):267-318.

[17] Anthony J R,Christopher J L W, Liu S.Structural Evidence for the Permo-Triassic Tectonic Evolution of the Yidun Arc, Eastern Tibetan Plateau[J].Journal of Structural Geology,2005,27(1):119-137.

[18] Zhang Q, Wang C Y, Lin D Y,et al. A Brief of Ophiolites in China[J].Journal of Asian Earth Sciences,2008,32:308-324.

[19] Shi R D,Yang J S,Xu Z Q,et al. The Bangong Lake Ophiolite (NW Tibet) and Its Bearing on the Tectonic Evolution of the Bangong-Nujiang Suture Zone[J].Journal of Asia Earth Sciences,2008,32:438-457.

[20] 孙巍,迟效国,潘世语,等.大兴安岭北部新林地区倭勒根群大网子组锆石LA-ICP-MS U-Pb年龄及其地质意义[J].吉林大学学报(地球科学版),2014,44(1):176-185. Sun Wei,Chi Xiaoguo,Pan Shiyu,et al.Zircom LA-ICP-MS U-Pb Dating and Its Geological Significance of the Dawangzi Formation from Wolegen Group in Xinlin Area,Northern Great Xing'an Range[J].Journal of Jilin University(Earth Science Edition),2014,44(1):176-185.

[21] 苗来成,刘敦一,张福勤,等.大兴安岭韩家园子和新林地区兴华渡口群和扎兰屯群锆石SHRIMP U-Pb年龄[J].科学通报,2007,52(5):591-601. Miao Laicheng, Liu Dunyi, Zhang Fuqin,et al.Zircon SHRIMP U-Pb Ages of the "Xinghua, Dukou Group" in Hanjiayuanzi and Xinglin Area and the "Zhalantun Group" in Inner Mongolia, Great Xing'an Range[J].Chinese Science Bulletin,2007,52(5):591-601.

[22] 葛文春,吴福元,周长勇,等.大兴安岭北部塔河花岗岩体的时代及对额尔古纳地块构造归属的制约[J].科学通报,2005,50(12):1239-1247. Ge Wenchun,Wu Fuyuan,Zhou Changyong,et al. Emplacement Age of the Tahe Granite and Constraints on the Tectongic Nature of the Ergun Block,in the Northern Part of the Da Huinggan Range[J]. Chinese Science Bulletin,2005,50(12):1239-1247.

[23] 葛文春,吴福元,周长勇,等.兴蒙造山带东段斑岩型Cu,Mo矿床成矿时代及其地球动力学意义[J].科学通报,2007,52(20):2407-2417. Ge Wenchun,Wu Fuyuan,Zhou Changyong,et al.Porphyry Cu-Mo Deposits in the Eastern Xing'an-Mongolian Orogenic Belt:Mineralization Ages and Their Geodynomic Implications[J]. Chinese Science Bulletin,2007,52(20):2407-2417.

[1] 张强, 丁清峰, 宋凯, 程龙. 东昆仑洪水河铁矿区狼牙山组千枚岩碎屑锆石U-Pb年龄、Hf同位素及其地质意义[J]. 吉林大学学报(地球科学版), 2018, 48(4): 1085-1104.
[2] 郭春涛, 李如一, 陈树民. 塔里木盆地古城地区鹰山组白云岩稀土元素地球化学特征及成因[J]. 吉林大学学报(地球科学版), 2018, 48(4): 1121-1134.
[3] 崔亚川, 于介江, 杨万志, 张元厚, 崔策, 于介禄. 东天山觉罗塔格带黄山地区角闪辉长岩岩体的年代学、地球化学特征及岩石成因[J]. 吉林大学学报(地球科学版), 2018, 48(4): 1105-1120.
[4] 赵希林, 姜杨, 邢光福, 于胜尧, 彭银彪, 黄文成, 王存智, 靳国栋. 陈蔡早古生代俯冲增生杂岩对华夏与扬子地块拼合过程的指示意义[J]. 吉林大学学报(地球科学版), 2018, 48(4): 1135-1153.
[5] 王朝阳, 孟恩, 李壮, 李艳广, 靳梦琪. 吉东南新太古代晚期片麻岩类的时代、成因及其对早期地壳形成演化的制约[J]. 吉林大学学报(地球科学版), 2018, 48(3): 587-625.
[6] 尹业长, 郝立波, 赵玉岩, 石厚礼, 田午, 张豫华, 陆继龙. 冀东高家店和蛇盘兔花岗岩体:年代学、地球化学及地质意义[J]. 吉林大学学报(地球科学版), 2018, 48(2): 574-586.
[7] 齐天骄, 薛春纪, 许碧霞. 新疆昭苏布合塔铜(金)矿化区花岗质岩石锆石U-Pb年龄、地球化学特征及其成因[J]. 吉林大学学报(地球科学版), 2018, 48(1): 132-144.
[8] 孙凡婷, 刘晨, 邱殿明, 鲁倩, 贺云鹏, 张铭杰. 大兴安岭东坡小奎勒河中基性侵入岩成因及地球动力学意义:锆石U-Pb年代学、元素和Hf同位素地球化学证据[J]. 吉林大学学报(地球科学版), 2018, 48(1): 145-164.
[9] 张超, 崔芳华, 张照录, 耿瑞, 宋明春. 鲁西金岭地区含矿闪长岩体成因:来自锆石U-Pb年代学和地球化学证据[J]. 吉林大学学报(地球科学版), 2017, 47(6): 1732-1745.
[10] 施珂, 张达玉, 丁宁, 王德恩, 陈雪锋. 皖南逍遥岩体的年代学、地球化学特征及其成因分析[J]. 吉林大学学报(地球科学版), 2017, 47(6): 1746-1762.
[11] 谭洪旗, 刘玉平. 滇东南猛洞岩群斜长角闪岩成因及其构造意义[J]. 吉林大学学报(地球科学版), 2017, 47(6): 1763-1783.
[12] 陈治军, 任来义, 贺永红, 刘护创, 宋健. 银额盆地哈日凹陷银根组优质烃源岩地球化学特征及其形成环境[J]. 吉林大学学报(地球科学版), 2017, 47(5): 1352-1364.
[13] 王师捷, 徐仲元, 董晓杰, 杜洋, 崔维龙, 王阳. 华北板块北缘中段二叠纪的构造属性:来自火山岩锆石U-Pb年代学与地球化学的制约[J]. 吉林大学学报(地球科学版), 2017, 47(5): 1442-1457.
[14] 许中杰, 蓝艺植, 程日辉, 李双林. 句容地区下奥陶统仑山组海平面变化的碳酸盐岩地球化学记录[J]. 吉林大学学报(地球科学版), 2017, 47(5): 1458-1470.
[15] 赵院冬, 车继英, 吴大天, 许逢明, 赵君, 李士超. 小兴安岭西北部早—中侏罗世TTG花岗岩年代学、地球化学特征及构造意义[J]. 吉林大学学报(地球科学版), 2017, 47(4): 1119-1137.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!