Metallogenesis of the main collisional period in mid-western Gangdise:Zir-con U-Pb geochronology of the granite porphyry in Dexin deposit, Tibet

KE Xianzhong; LONG Wenguo; ZHOU Dai; WANG Jing; ZHONG Shiyu

2017 Vol. 36, No. 5

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KE Xianzhong, LONG Wenguo, ZHOU Dai, WANG Jing, ZHONG Shiyu. Metallogenesis of the main collisional period in mid-western Gangdise:Zir-con U-Pb geochronology of the granite porphyry in Dexin deposit, Tibet[J]. Geological Bulletin of China, 2017, 36(5): 772-779.

Citation:

KE Xianzhong, LONG Wenguo, ZHOU Dai, WANG Jing, ZHONG Shiyu. Metallogenesis of the main collisional period in mid-western Gangdise:Zir-con U-Pb geochronology of the granite porphyry in Dexin deposit, Tibet[J]. Geological Bulletin of China, 2017, 36(5): 772-779.

Metallogenesis of the main collisional period in mid-western Gangdise:Zir-con U-Pb geochronology of the granite porphyry in Dexin deposit, Tibet

1.
Wuhan Center of Geological Survey, CGS, Wuhan 430205, Hubei, China
2.
Hubei Geological Survey, Wuhan 430034, Hubei, China

Received Date: 15 December 2015

Revised Date: 13 June 2016

Publish Date: 25 May 2017

Abstract

Abstract

The Dexin Ag-Pb-Zn deposit, located in the Longgeer-Gongbujiangda fault-block uplift belt at the center of Lhasa Ter-rane, is one of the representative hydrothermal type deposits in the Gangdise Ag-Pb-Zn polymetallic ore-forming belt.The Pb-Zn mineralization dominantly occurs in the fractures of wall rocks and the granitic porphyries.Zircons from the ore-bearing granitic por-phyry in Dexin were measured by the LA-ICP-MS U-Pb dating method, which yielded a weighted average ²⁰⁶Pb/²³⁸U age of 57.7±0.5Ma (MSWD=1.6, n=15) that represents the formation age of the granitic porphyries and the Pb-Zn mineralization in the granitic porphyries.With a comprehensive analysis of geological background, it is concluded that the Pb-Zn mineralization associated with the granitic porphyries in Dexin and the cryptoexplosive breccia type Pb-Zn mineralization in Narusongduo were formed by the same magmatic metallogenic system, and there were many magmatic-metallogenic events near/in the main Indian-Asian collisional period in the mid-west part of Gangdise.
- granitic porphyry /
- zircon U-Pb age /
- Dexin /
- Tibet

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References

[1]	孟祥金. 西藏碰撞造山带冈底斯中新世斑岩铜矿成矿作用研究[D]. 中国地质科学院博士学位论文, 2004.http://www.oalib.com/references/17373755 Google Scholar
[2]	孟祥金, 侯增谦, 叶培盛, 等.西藏冈底斯银多金属矿化带的基本特征与成矿远景分析[J].矿床地质, 2007, 26(2):153-162. Google Scholar
[3]	侯增谦, 曲晓明, 杨竹森, 等.青藏高原碰撞造山带:Ⅲ.后碰撞伸展成矿作用[J].矿床地质, 2006, 25(6):629-651. Google Scholar
[4]	孟祥金, 侯增谦, 高永丰, 等.西藏冈底斯东段斑岩铜钼铅锌成矿系统的发育时限:帮浦铜多金属矿床辉钼矿Re-Os年龄证据[J].矿床地质, 2003, 22(3):246-252. Google Scholar
[5]	唐菊兴, 陈毓川, 王登红, 等.西藏工布江达县沙让斑岩钼矿床辉钼矿铼-锇同位素年龄及其地质意义[J].地质学报, 2009, 83(5):698-704. Google Scholar
[6]	高一鸣, 陈毓川, 唐菊兴, 等.西藏工布江达县亚贵拉铅锌钼多金属矿床石英斑岩锆石SHRIMP定年及其地质意义[J].地质学报, 2009, 83(10):1436-1444. doi: 10.3321/j.issn:0001-5717.2009.10.008 CrossRef Google Scholar
[7]	Zheng Y C, Fu Q, Hou Z Q, et al. Metallogeny of the northeastern Gangdese Pb-Zn-Ag-Fe-Mo-W polymetallic belt in the Lhasa terrane, southern Tibet[J]. Ore Geology Reviews, 2015, 70:510-532. doi: 10.1016/j.oregeorev.2015.04.004 CrossRef Google Scholar
[8]	Zhao J X, Qin K Z, Li G M, et al. Collision-related genesis of the Sharang porphyry molybdenum deposit, Tibet:evidence from zircon U-Pb ages, Re-Os ages and Lu-Hf isotopes[J]. Ore Geology Re-views, 2014, 56:312-326. doi: 10.1016/j.oregeorev.2013.06.005 CrossRef Google Scholar
[9]	付强, 杨竹森, 郑远川, 等.西藏龙马拉Cu-Fe-Pb-Zn多金属矿床金云母Ar-Ar定年及其地球动力学意义[J].岩石矿物学杂志, 2014, 33(2):283-293. Google Scholar
[10]	纪现华, 孟祥金, 杨竹森, 等.西藏纳如松多隐爆角砾岩型铅锌矿床绢云母Ar-Ar定年及其地质意义[J].地质与勘探, 2014, 50(2):281-290. Google Scholar
[11]	付强, 杨竹森, 郑远川, 等.加拉普铁矿区花岗闪长岩锆石U-Pb年龄、Hf同位素及地球化学研究[J].矿床地质, 2013, 32(3):564-578. Google Scholar
[12]	辛存林, 都卫东, 张育平, 等.西藏洞中松多铅锌多金属矿床地质特征及成因[J].兰州大学学报(自然科学版), 2013, 49(1):24-31. Google Scholar
[13]	黄克贤, 郑远川, 张松, 等.西藏亚贵拉矿区两期岩体LA-ICPMS锆石U-Pb定年及地质意义[J].岩石矿物学杂志, 2012, 31(3):348-360. Google Scholar
[14]	付强, 郑远川, 黄克贤.西藏龙马拉多金属矿床硫、铅同位素组成及其地质意义[J].有色金属(矿山部分), 2012, 64(4):26-30. Google Scholar
[15]	纪现华, 杨竹森, 于玉帅, 等.西藏纳如松多铅锌矿床成矿岩体形成机制:岩浆锆石证据[J].矿床地质, 2012, 41(4):758-774. Google Scholar
[16]	于玉帅, 杨竹森, 多吉, 等.西藏加多捕勒铁铜矿成矿岩体时代与成因:锆石U-Pb年龄、Hf同位素与稀土元素证据[J].矿床地质, 2011, 30(3):420-434. Google Scholar
[17]	李应栩, 谢玉玲, 陈伟, 等.西藏恰功铁矿二长花岗斑岩锆石的U-Pb年代学与地球化学特征及意义[J].岩石学报, 2011, 27(7):2023-2033. Google Scholar
[18]	高一鸣, 陈毓川, 唐菊兴, 等.西藏工布江达地区亚贵拉铅锌钼矿床辉钼矿Re-Os测年及其地质意义[J].地质通报, 2011, 30(7):1027-1036. Google Scholar
[19]	费光春, 温春齐, 周雄, 等.西藏洞中拉铅锌矿床石英激光探针⁴⁰Ar-³⁹Ar定年及地质意义[J].矿物岩石, 2010, 30(3):38-43. Google Scholar
[20]	杨勇, 罗泰义, 杨竹森, 等.冈底斯造山带两套不同成矿体系的含矿斑岩对比研究[J].矿床地质, 2010, 29(2):195-206. Google Scholar
[21]	刘波, 董随亮, 李光明, 等. 西藏斯弄多铅锌矿岩体地球化学特征及年龄地质意义[J]. 2010, 29(增刊): 472-473. Google Scholar
[22]	李光明, 刘波, 董随亮, 等. 冈底斯成矿带中段铜铁铅锌矿集区的叠合成矿作用及意义[J]. 2010, 29(增刊): 217-218. Google Scholar
[23]	谢玉玲, 李应栩, Cooke D R, 等.西藏恰功铁矿岩浆演化序列及斑岩出溶流体特征[J].地质学报, 2009, 83(12):1869-1886. doi: 10.3321/j.issn:0001-5717.2009.12.006 CrossRef Google Scholar
[24]	张林奎, 范文玉, 高大发.西藏林周县勒青拉铅锌多金属矿床地质特征及成因[J].地质与勘探, 2008, 44(5):10-16 Google Scholar
[25]	朱斯豹, 汪雄武, 彭惠娟, 等.西藏索波贡巴地区中新世花岗岩类与矽卡岩型铅锌矿的关系[J].矿床地质, 2010, 29(增刊):365-366. Google Scholar
[26]	刘英超, 纪现华, 侯增谦, 等.一个与岩浆作用有关的独立铅锌成矿系统的建立——以西藏纳如松多铅锌矿床为例[J].岩石矿物学杂志, 2015, 34(4):539-556. Google Scholar
[27]	臧文栓, 孟祥金, 杨竹森, 等.西藏冈底斯成矿带铅锌银矿床的S、Pb同位素组成及其地质意义[J].地质通报, 2007, 26(10):1393-1397. doi: 10.3969/j.issn.1671-2552.2007.10.017 CrossRef Google Scholar
[28]	Yin A, Harrison T M. Geologic evolution of the Himalayan Tibet-an Orogen[J]. Earth and Planetary Science Letters, 2000, 28:211-280. doi: 10.1146/annurev.earth.28.1.211 CrossRef Google Scholar
[29]	侯增谦, 孟祥金, 曲晓明.西藏冈底斯斑岩铜矿带埃达克质斑岩含矿性:源岩相变及深部过程约束[J].矿床地质, 2005, 24(2):108-121. Google Scholar
[30]	Liu Y S, Hu Z C, Gao S. In situ analysis of major and trace ele-ments of anhydrous minerals by LA-ICP-MS Without applying an internal standards[J]. Chemical Geology, 2008, 257:34-43. doi: 10.1016/j.chemgeo.2008.08.004 CrossRef Google Scholar
[31]	Liu Y S, Gao S, Hu Z C. Continental and oceanic crust recyclinginduced melt-peridotite interactions in the Trans-North China Orogen:U-Pb dating, Hf isotopes and trace elements in zircons of mantle xenoliths[J]. Journal of Petrology, 2010, 51:537-571. doi: 10.1093/petrology/egp082 CrossRef Google Scholar
[32]	Liu Y S, Hu Z C, Zong K Q, et al. Reappraisement and refine-ment of zircon U-Pb isotope and trace element analyses by LAICP-MS[J]. Chinese Science Bulletin, 2010, 55(15):1535-1546. doi: 10.1007/s11434-010-3052-4 CrossRef Google Scholar
[33]	Andersen T. Correction of common lead in U-Pb analyses that do not report ²⁰⁴Pb[J]. Chemical Geology, 2002, 192:59-79. doi: 10.1016/S0009-2541(02)00195-X CrossRef Google Scholar
[34]	Ludwig K R. User's Manual for ISOPLOT 3.00:A Geochronolog-ical Toolkit for Microsoft Excel[M]. Berkeley C A:Berkeley Geo-chronology Centre, Special Publication 2008, 4:1-76. Google Scholar
[35]	Rowley D B, Xue F, Tucker R D, et al. Ages of ultrahigh pressure metamorphic and source orthognisses from the eastern Dabie Shan:U/Th zircon geochronology[J]. Earth and Planetary Science Let-ters. 1997, 151:191-203. doi: 10.1016/S0012-821X(97)81848-1 CrossRef Google Scholar
[36]	Crofu F, Hanchar J M, Hoskin P W, et al. Atlas of zircon textures[J]. Reviews in Mineralogy and Geochemistry, 2003, 53:469-495. doi: 10.2113/0530469 CrossRef Google Scholar
[37]	吴元保, 郑永飞.锆石成因矿物学研究及其对U-Pb年龄解释的制约[J].科学通报, 2004, 49(16):1589-1604. doi: 10.3321/j.issn:0023-074X.2004.16.002 CrossRef Google Scholar
[38]	吴元保, 郑永飞, 龚冰, 等.北淮阳新开岭地区花岗岩锆石U-Pb年龄和氧同位素组成[J].地球科学-中国地质大学学报, 2005, 30(6):659-672. Google Scholar
[39]	Rowley D B. Age of initiation of collision between India and Asia:A review of stratigraphic data[J]. Earth and Planetary Science Let-ters, 1996, 145(1/4):1-13. Google Scholar
[40]	莫宣学, 赵志丹, 邓晋福, 等.印度-亚洲大陆碰撞过程的火山响应[J].地学前缘, 2003, 10(3):135-148. Google Scholar
[41]	王成善, 李祥辉, 胡修棉.再论印度-亚洲大陆碰撞的启动时间[J].地质学报, 2003, 77(1):16-24. Google Scholar
[42]	侯增谦, 杨竹森, 徐文艺, 等.青藏高原碰撞造山带:Ⅰ.主碰撞造山成矿作用[J].矿床地质, 2006, 25(4):337-358. Google Scholar
[43]	侯增谦, 潘桂棠, 王安建, 等.青藏高原碰撞造山带:Ⅱ.晚碰撞转换成矿作用[J].矿床地质, 2006, 25(5):521-533. Google Scholar
[44]	杨勇, 罗泰义, 黄智龙, 等.西藏纳如松多银铅矿S、Pb同位素组成:对成矿物质来源的指示[J].矿物学报, 2010b, 30(3):311-318. Google Scholar
[45]	中国地质调查局发展研究中心.国内外铅锌矿床成矿理论与找矿方法[M].北京:地质出版社, 2004. Google Scholar
①	习中军. 西藏自治区谢通门县德新矿区铅多金属矿普查2011年地质总结. 西藏自治区地质矿产勘查开发局第五地质大队, 2011. Google Scholar