吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (1): 132-144.doi: 10.13278/j.cnki.jjuese.20170208
齐天骄1, 薛春纪1, 许碧霞2
Qi Tianjiao1, Xue Chunji1, Xu Bixia2
摘要: 布合塔铜(金)矿化区位于新疆昭苏境内,大地构造位于那拉提构造带北缘西段。矿化区主要被二长花岗岩及石英闪长岩呈岩株状侵入,在花岗岩体边缘及与围岩接触带内均有铜(金)矿化。研究区2种岩体的锆石 LA-ICP-MS U-Pb测年结果分别为(434.5±4.6)Ma(二长花岗岩)、(445.7±5.1)Ma(石英闪长岩),为晚奥陶世—早志留世;元素地球化学测试结果显示,二者均属过铝质钾玄岩系列;二长花岗岩A/CNK值为1.35~1.42,石英闪长岩A/CNK值为1.47~1.71,具S型花岗岩特征;二者稀土元素特征较为相近,均显示轻稀土相对富集、具Eu负异常(δEu=0.67~0.80),微量元素均显示富集Ba、Th、U,亏损Nb、Ta等;地球化学分析表明,岩浆源岩主要为变杂砂岩,以部分熔融作用为主。结合区域大地构造背景及相关研究,总体认为该矿化区花岗质岩浆是由中天山板块与伊犁板块碰撞闭合之后的中下地壳部分熔融而成。
中图分类号:
[1] 薛春纪,段士刚,柴凤梅,等. 乌兹别克斯坦Almalyk斑岩铜矿田成矿时代及其地质意义[J]. 地学前缘,2013,20(2):197-204. Xue Chunji, Duan Shigang, Chai Fengmei, et al. Metallogenic Epoch of the Almalyk Porphyry Copper Ore Field, Uzbekistan, and Its Geological Significance[J]. Earth Science Frontiers, 2013, 20(2): 197-204. [2] 薛春纪,赵晓波,莫宣学,等. 西天山"亚洲金腰带"及其动力背景和成矿控制与找矿[J]. 地学前缘, 2014, 21(5):128-155. Xue Chunji, Zhao Xiaobo, Mo Xuanxue, et al. Asian Gold Belt in Western Tianshan and Its Dynamic Setting, Metallogenic Control and Exploration[J]. Earth Science Frontiers, 2014, 21(5): 128-155. [3] 薛春纪,赵晓波,张国震,等. 西天山金铜多金属重要成矿类型、成矿环境及找矿潜力[J]. 中国地质,2015,42(3):381-410. Xue Chunji, Zhao Xiaobo, Zhang Guozhen, et al. Metallogenic Environments, Ore-Forming Types and Prospecting Potential of Au-Cu-Zn-Pb Rresources in Western Tianshan Mountains[J]. Geology in China, 2015, 42(3): 381-410. [4] 杨维忠,薛春纪,赵晓波,等. 新疆西天山新发现新源县卡特巴阿苏大型金铜矿床[J]. 地质通报,2013,32(10):1613-1620. Yang Weizhong, Xue Chunji, Zhao Xiaobo, et al. The Discovery of the Kateba'asu Large Au-Cu Deposit in Xinyuan County, Western Tianshan, Xinjiang[J]. Geological Bulletin of China, 2013, 32(10): 1613-1620. [5] 张祺,薛春纪,赵晓波,等. 新疆西天山卡特巴阿苏大型金矿床地质地球化学和成岩成矿年代[J]. 中国地质,2015,42(3):411-438. Zhang Qi, Xue Chunji, Zhao Xiaobo, et al. Geology,Geochemistry and Metallogenic Epoch of the Kateba'asu Large-Sized Gold Deposit, Western Tianshan Mountains, Xinjiang[J]. Geology in China, 2015, 42(3): 411-438. [6] Long L, Gao J, Klemd R, et al. Geochemical and Geochronological Studies of Granitoid Rocks from the Western Tianshan Orogen: Implications for Continental Growth in the Southwestern Central Asian Orogenic Belt[J]. Lithos, 2011, 126(3): 321-340. [7] 韩宝福,何国琦,吴泰然,等. 天山早古生代花岗岩锆石U-Pb定年、岩石地球化学特征及其大地构造意义[J]. 新疆地质,2004,22(1):4-11. Han Baofu, He Guoqi, Wu Tairan, et al. Zircon U-Pb Dating and Geochemical Features of Early Paleozoic Granites from Tianshan, Xinjiang: Implications for Tectonic Evolution[J]. Xinjiang Geology, 2004, 22(1):4-11. [8] 杨天南,李锦轶,孙桂华,等. 中天山早泥盆世陆弧:来自花岗质糜棱岩地球化学及SHRIMP-U/Pb定年的证据[J]. 岩石学报,2006,22(1):41-48. Yang Tiannan, Li Jinyi, Sun Guihua, et al. Earlier Devonian Active Continental Arc in Central Tianshan: Evidence of Geochemical Analyses and Zircon SHRIMP Dating on Mylonitized Granitic Rock[J]. Acta Petrologica Sinica,2006,22(1): 41-48. [9] 朱永峰,宋彪. 新疆天格尔糜棱岩化花岗岩的岩石学及其SHRIMP年代学研究: 兼论花岗岩中热液锆石边的定年[J]. 岩石学报,2006,22(1):135-144. Zhu Yongfeng, Song Biao. Petrology and SHRIMP Chronology of Mylonitized Tianger Granite, Xinjiang: Also About the Dating on Hydrothermal Zircon Rim in Granite[J]. Acta Petrologica Sinica, 2006, 22(1): 135-144. [10] 朱志新,李锦轶,董连慧,等. 新疆西天山古生代侵入岩的地质特征及构造意义[J]. 地学前缘,2011,18(2):170-179. Zhu Zhixin, Li Jinyi, Dong Lianhui, et al. Geological Characteristics and Tectonic Significance of Paleozoic Intrusive Rocks in Western Tianshan of Xinjiang Province[J]. Earth Science Frontiers, 2011, 18(2): 170-179. [11] 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]. Chemical Geology, 2008, 257(1): 34-43. [12] Liu Y, Gao S, Hu Z, et al. Continental and Oceanic Crust Recycling-Induced Melt-Peridotite 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. [13] Hoskin P W O, Black L P. Metamorphic Zircon Formation by Solid-State Recrystallization of Protolith Igneous Zircon[J]. Journal of Metamorphic Geology, 2000, 18(4): 423-439. [14] 郑伟,陈懋弘,赵海杰,等. 广东鹦鹉岭钨多金属矿床中黑云母花岗岩LA-ICP-MS锆石U-Pb定年和Hf同位素特征及其地质意义[J]. 岩石学报,2013,29(12):4121-4135. Zheng Wei, Chen Maohong, Zhao Haijie, et al. Zircon U-Pb Geochronological and Hf Isotopic Constraints on Petrogenesis of Yingwuling Tungsten Polymetallic Deposit in Guangdong Province and Its Geological Significance[J]. Acta Petrologica Sinica, 2013, 29(12): 4121-4135. [15] Zheng W, Mao J W, Pirajno F, et al. Geochronology and Geochemistry of the Shilu Cu-Mo Deposit in the Yunkai Area,Guangdong Province, South China and Its Implication[J]. Ore Geology Reviews, 2015, 67: 382-398. [16] Zheng W, Mao J W, Zhao C S, et al. Early Creta-ceous Magmatism and Associated Polymetallic Mineralization in South China: The Tiantang Example[J/OL]. International Geology Review,2017,doi:10.1080/00206814.2017.1326180. [17] Zheng W, Mao J W, Zhao H J, et al. Geochemistry, Sr-Nd-Pb-Hf Isotopes Systematics and Geochronological Constrains on Petrogenesis of the Xishan A-Type Granite and Associated W-Sn Mineralization in Guangdong Province, South China[J].Ore Geology Reviews, 2016, 88: 739-752. [18] Zheng W, Mao J W, Zhao H J, et al. Two Late Cretaceous A-Type Granites Related to the Yingwuling W-Sn Polymetallic Mineralization in Guangdong Province,South China, Implications for Petrogenesis, Geodynamic Setting, and Mineralization[J]. Lithos, 2017, 274/275: 106-122. [19] Belousova E, Griffin W L, O'Reilly S Y, et al. Igneous Zircon: Trace Element Composition As an Indicator of Source Rock Type[J]. Contributions to Mineralogy and Petrology, 2002, 143(5): 602-622. [20] Rickwood P C. Boundary Lines Within Petrologic Diagrams Which Use Oxides of Major and Minor Elements[J]. Lithos, 1989, 22(4): 247-263. [21] Maniar P D, Piccoli P M. Tectonic Discrimination of Granitoids[J]. Geological Society of America Bulletin, 1989, 101(5): 635-643. [22] Altherr R, Holl A, Hegner E, et al. High-Pota-ssium, Calc-Alkaline I-Type Plutonism in the European Variscides: Northern Vosges (France) and Northern Schwarzwald (Germany)[J]. Lithos, 2000, 50(1): 51-73. [23] Sylvester P J. Post-Collisional Strongly Peraluminous Granites[J]. Lithos, 1998, 45(1): 29-44. [24] Sun S S,McDonough. Chemical and Isotopic Syste-matics of Oceanic Basalts: Implications for Mantle Composition and Processes[J]. Geological Society, London, Special Publications, 1989, 42: 313-345. [25] Shaw A, Downes H, Thirlwall M F. The Quartz-Diorites of Limousin: Elemental and Isotopic Evidence for Devono-Carboniferous Subduction in the Hercynian Belt of the French Massif Central[J]. Chemical Geology, 1993, 107(1/2): 1-18. [26] Barth M G, McDonough W F, Rudnick R L. Trac-king the Budget of Nb and Ta in the Continental Crust[J]. Chemical Geology, 2000, 165(3): 197-213. [27] 中科院地球化学所. 高等地球化学[M]. 北京:科学出版社,2000. Institute of Geochemistry, Chinese Academy of Sciences. Advanced Geochemistry[M]. Beijing: Science Press, 2000. [28] 曾忠诚,吝路军,朱海平,等. 帕米尔东北缘穷阿木太克岩体年代学、地球化学特征及地质意义[J]. 吉林大学学报(地球科学版),2016,46(1):119-134. Zeng Zhongcheng, Lin Lujun, Zhu Haiping, et al. Geochronological and Geochemical Characteristics and Tectonic Implications of Qiong' amutaike Pluton in Northeastern Pamir[J]. Journal University(Earth Science Edition), 2016, 46(1): 119-134. [29] 张晓飞,李智明,贾群子,等. 青海祁漫塔格虎头崖多金属矿区花岗斑岩地球化学、年代学特征及其地质意义[J]. 吉林大学学报(地球科学版),2016,46(3):749-765. Zhang Xiaofei, Li Zhiming, Jia Qunzi, et al. Geochronology,Geochemistry and Geological Significance of Granite Porphyry in Hutouya Polymetallic Deposit,Qimantage Area,Qinghai Province[J]. Journal of Jilin University(Earth Science Edition), 2016, 46(3): 749-765. [30] Pearce J A, Harris N B W, Tindle A G. Trace Element Discrimination Diagrams for the Tectonic Interpretation of Granitic Rocks[J]. Journal of Petrology, 1984, 25(4): 956-983. [31] Kiselev V V. U-Pb Zircon Geochronology of Mag-matic Occurrences of the Northern Tien Shan[M]. Bishkek: Nauk Kyrgyzskay Respublica, 1999: 21-33. [32] Konopelko D L, Biske Y S, Kullerud K, et al. The Koshrabad Granite Massif in Uzbekistan: Pertogenesis, Metallogeny, and Geodynamic Setting[J]. Russian Geology and Geophysics, 2011, 52(12): 1563-1573. [33] 邢浩,赵晓波,张招崇,等. 西天山巴音布鲁克地区早古生代成矿地质环境:岩浆岩及其时代和元素同位素约束[J]. 岩石学报,2016,32(6):1770-1794. Xing Hao, Zhao Xiaobo, Zhang Zhaochong, et al. Early Paleozoic Geological Environment of Metallogeny in Bayinbuluke Region, Western Tien Shan: Igneous Rocks and Their Dating, Elementary and Isotopic Constraints[J]. Acta Petrologica Sinica, 2016, 32(6): 1770-1794. [34] Gao J, Long L, Klemd R, et al. Tectonic Evolution of the South Tianshan Orogen and Adjacent Regions, NW China: Geochemical and Age Constraints of Granitoid Rocks[J]. International Journal of Earth Sciences, 2009, 98(6): 1221-1238. [35] Biske Y S, Seltmann R. Paleozoic Tian-Shan as a Transitional Region Between the Rheic and Urals-Turkestan Oceans[J]. Gondwana Research, 2010, 17(2): 602-613. [36] 朱宝清,冯益民,杨军录,等. 新疆中天山干沟一带蛇绿混杂岩和志留纪前陆盆地的发现及其意义[J]. 新疆地质,2002,20(4):326-330. Zhu Baoqing, Feng Yimin, Yang Junlu, et al. Discovery of Ophiolitic Mélange and Silurian Foreland Basin at Gangou of Tokxun, Xinjiang and Their Tectonic Significance[J]. Xinjiang Geology, 2002, 20(4): 326-330. |
[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] | 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. |
[8] | 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. |
[9] | 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. |
[10] | 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. |
[11] | 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. |
[12] | 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. |
[13] | 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. |
[14] | 李宁, 王成文. 东北及邻区晚古生代地层接触关系与佳-蒙地块的形成和演化[J]. 吉林大学学报(地球科学版), 2017, 47(5): 1331-1340. |
[15] | 张立敏, 王岳军, 张玉芝, 刘汇川, 张新昌. 海南岛北部古生界时代:碎屑锆石U-Pb年代学约束[J]. 吉林大学学报(地球科学版), 2017, 47(4): 1187-1206. |
|