MOLYBDENITE Re-Os ISOTOPIC DATING OF SANGBUJIALA COPPER DEPOSIT IN THE SOUTH MARGIN OF THE EASTERN GANGDESE SECTION, TIBET, AND ITS GEOLOGICAL IMPLICATIONS

ZHAO Zhen; HU Dao-gong; WU Zhen-han; LU Lu

2012 Vol. 18, No. 2

Article Contents

Article navigation > Journal of Geomechanics > 2012 > 18(2): 178-186

Next Article Previous Article

ZHAO Zhen, HU Dao-gong, WU Zhen-han, LU Lu. MOLYBDENITE Re-Os ISOTOPIC DATING OF SANGBUJIALA COPPER DEPOSIT IN THE SOUTH MARGIN OF THE EASTERN GANGDESE SECTION, TIBET, AND ITS GEOLOGICAL IMPLICATIONS[J]. Journal of Geomechanics, 2012, 18(2): 178-186.

Citation:

MOLYBDENITE Re-Os ISOTOPIC DATING OF SANGBUJIALA COPPER DEPOSIT IN THE SOUTH MARGIN OF THE EASTERN GANGDESE SECTION, TIBET, AND ITS GEOLOGICAL IMPLICATIONS

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
Chinese Academy of Geological Sciences, Beijing 100037, China

Received Date: 08 December 2011

Publish Date: 25 June 2012

Abstract

Abstract

Located in north side of Yaluzangbujiang Suture, Sangbujiala skarn-type copper deposit is one of the typical polymetallic deposits in the south subzone of the Gangdese metallogenic belt. For the purpose of finding out the mineralization time, the authors selected eight molybdenite samples from Sangbujiala ore district to perform the Re-Os dating. The age of Re-Os isotime line from molybdenite is 93.3±4.1 Ma, with an average model age of 94.5±1.6 Ma. Therefore, the Sangbujiala ore formed during Late Cretaceous, which belongs to the Neo-Tethys subduction stage. The Sangbujiala ore and other Cenozoic deposits showed that the Gangdese metallogenic belt occurring large-scale mineralization in the subduction stage, main collision stage, late collision stage and post-collisional stage, and to form a complete series of metallogenic evolution.
- Re-Os isotope age /
- molybdenite /
- skarn-type copper deposit /
- Gangdese /
- metallogenic evolution

FullText(HTML)

References

[1]	范新, 陈雷, 秦克章, 等.西藏山南地区明则斑岩钼矿蚀变矿化特征与成矿时代[J].地质与勘探, 2011, 47(1):89~99. Google Scholar FAN Xin, CHEN Lei, QIN Ke-zhang, et al. Characteristics of alteration and mineralization and chronology of the Mingze porphyry Mo deposit in the Shannan area of southern Tibet[J]. Geology and Exploration, 2011, 47(1):89~99. Google Scholar
[2]	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):521~543. Google Scholar HOU Zeng-qian, PAN Gui-tang, WANG An-jian, et al. Metallogenesis in Tibetan collisional orogenic belt:Ⅱ.Mineralization in late-collisional transformation setting[J]. Mineral Deposits, 2006, 25(5):521~543. Google Scholar
[3]	佘宏全, 丰成友, 张德全, 等.西藏冈底斯中东段矽卡岩铜-铅-锌多金属矿床特征及成矿远景分析[J].矿床地质, 2005, 24(5):508~520. Google Scholar SHE Hong-quan, FENG Cheng-you, ZHANG De-quan, et al. Characteristics and metallogenic potential of skarn copper-lead-zinc polymetallic deposits in central eastern Gangdese[J]. Mineral Deposits, 2005, 24(5):508~520. Google Scholar
[4]	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 HOU Zeng-qian, YANG Zhu-sen, XU Wen-yi, et al. Metallogenesis in Tibetan collisional orogenic belt:Ⅰ. Mineralization in main collisional orogenic setting[J]. Mineral Deposits, 2006, 25(4):337~358. Google Scholar
[5]	芮宗瑶, 侯增谦, 李光明, 等.冈底斯斑岩铜矿成矿模式[J].地质论评, 2006, 52(4):459~466. Google Scholar RUI Zong-yao, HOU Zeng-qian, LI Guang-ming, et al. A genetic model for the Gandise porphyry copper deposits[J]. Geological Review, 2006, 52(4):459~466. Google Scholar
[6]	李光明, 刘波, 佘宏全, 等.西藏冈底斯成矿带南缘喜马拉雅早期成矿作用——来自冲木达铜金矿床的Re-Os同位素年龄证据[J].地质通报, 2006, 25(12):1482~1486. Google Scholar LI Guang-ming, LIU Bo, SHE Hong-quan, et al. Early Himalayan mineralization on the southern margin of the Gangdise metallogenic belt, Tibet, China:Evidence from Re-Os ages of the Chongmuda skarn-type Cu-Au deposit[J]. Geological bulletin of China, 2006, 25(12):1482~1486. Google Scholar
[7]	闫学义, 黄树峰, 杜安道.冈底斯泽当大型钨铜钼矿Re-Os年龄及陆缘走滑转换成矿作用[J].地质学报, 2010, 84(3):398~406. Google Scholar YAN Xue-yi, HUANG Shu-feng, DU An-dao. Re-Os ages of large tungsten, copper and molybdenum deposit in the Zetang orefield, Gangdise and marginal strike-slip transforming metallogenesis[J].Acta Geological Sinica, 2010, 84(3):398~406. Google Scholar
[8]	芮宗瑶, 侯增谦, 曲晓明, 等.冈底斯斑岩铜矿成矿时代及青藏高原隆升[J].矿床地质, 2003, 22(3):217~225. Google Scholar RUI Zong-yao, HOU Zeng-qian, QU Xiao-ming, et al. Metallogenetic epoch of Gangdese porphyry copper belt and uplift of Qinghai-Tibet Plateau[J]. Mineral Deposits, 2003, 22(3):217~225. Google Scholar
[9]	芮宗瑶, 李光明, 张立生, 等.西藏斑岩铜矿对重大地质事件的响应[J].地学前缘, 2004, 11(1):145~152. Google Scholar RUI Zong-yao, LI Guang-ming, ZHANG Li-sheng, et al. The response of porphyry copper deposits to important geological events in Xizang[J]. Earth Science Frontiers, 2004, 11(1):145~152. Google Scholar
[10]	侯增谦, 曲晓明, 王淑贤, 等.西藏高原冈底斯斑岩铜矿带辉钼矿Re-Os年龄:成矿作用时限与动力学背景应用[J].中国科学:D辑, 2003, 33(7):609~618. Google Scholar HOU Zeng-qian, QU Xiao-ming, WANG Shu-xian, et al. Re-Os age for molybdenite from the Gangdese porphyry copper belt on Tibetan plateau:Duration of the Cu mineralization for geodynamic setting[J]. Science in China:Series D, 2003, 33(7):609~618. Google Scholar
[11]	曲晓明, 侯增谦, 黄卫.冈底斯斑岩铜矿(化)带:西藏第二个"玉龙"铜矿带?[J].矿床地质, 2001, 20(4):355~366. Google Scholar QU Xiao-ming, HOU Zeng-qian, HUANG Wei. Is Gangdese porphyry copper belt the second "Yulong" copper belt?[J]. Mineral Deposits, 2001, 20(4):355~366. Google Scholar
[12]	李光明, 刘波, 屈文俊, 等.西藏冈底斯成矿带的斑岩-矽卡岩成矿系统:来自斑岩矿床和矽卡岩型铜多金属矿床的Re-Os同位素年龄证据[J].大地构造与成矿学, 2005, 29(4):482~490. Google Scholar LI Guang-ming, LIU Bo, QU Wen-jun, et al. The porphyry-skarn ore-forming system in Gangdese metallogenic belt, southern Xizang:Evidence from molybdenite Re-Os age of porphyry-type copper deposits and skarn-type copper polymetallic deposits[J]. Geotectonica et Metallogenia, 2005, 29(4):482~490. Google Scholar
[13]	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 MENG Xiang-jin, HOU Zeng-qian, GAO Yong-feng, et al. Development of porphyry copper-molybdenum lead-Zinc ore-forming system in east Gangdese belt, Tibet:Evidence from Re-Os age of molybdenite in Bangpu copper polymetallic deposit[J]. Mineral Deposits, 2003, 22(3):246~252. Google Scholar
[14]	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 TANG Ju-xing, CHEN Yu-chuan, WANG Deng-hong, et al. Re-Os dating of molybdenite from the Sharang porphyry molybdenum deposit in Gongbogyamda County, Tibet and its geological significance[J]. Acta Geological Sinica, 2009, 83(5):698~704. Google Scholar
[15]	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 GAO Yi-ming, CHEN Yu-chuan, TANG Ju-xing, et al. Re-Os dating of molybdenite from the Yaguila porphyry molybdenum deposit in Gongbogyamda area, Tibet, and its geological significance[J]. Geological Bulletin of China, 2011, 30(7):1027~1036. Google Scholar
[16]	潘桂棠, 莫宣学, 侯增谦, 等.冈底斯造山带的时空结构及演化[J].岩石学报, 2006, 22(3):521~533. Google Scholar PAN Gui-tang, MO Xuan-xue, HOU Zeng-qian, et al. Spatial-temporal framework of the Gangdese orogenic belt and its evolution[J]. Acta Petrologica Sinica, 2006, 22(3):521~533. Google Scholar
[17]	李光明, 冯孝良, 黄志英.西藏冈底斯构造带中段多岛弧盆系及其演化[J].沉积与特提斯地质, 2000, 20(4):38~46. Google Scholar LI Guang-ming, FENG Xiao-liang, HUANG Zhi-ying. The multiple island arc-basin systems and their evolution in the Gangdise tectonic belt, Xizang[J]. Sedimentary Geology and Tethyan Geology, 2000, 20(4):38~46. Google Scholar
[18]	侯增谦, 莫宣学, 杨志明.青藏高原碰撞造山带成矿作用:构造背景、时空分布和主要类型[J].中国地质, 2006, 33(2):348~359. Google Scholar HOU Zeng-qian, MO Xuan-xue, YANG Zhi-ming, et al. Metallogenses in the collisional orogen of the Qinghai-Tibet Plateau:Tectonic setting, tempo-spatial distribution and ore deposit types[J]. Geology in China, 2006, 33(2):348~359. Google Scholar
[19]	Schares E, Xu R H, Allegre C J. U-Pb geochronology of the Gangdese (Transhimalaya) plutonism in the Lhasa-Xizang region, Tibet[J]. Earth and Planetary Science Letters, 1984, 69:311~320. doi: 10.1016/0012-821X(84)90190-0 CrossRef Google Scholar
[20]	Harrison T M, Grove M, McKeegan K D, et al. Origin and episodic emplacement of the Manaslu intrusive complex, central Hiamalaya[J]. Journal of Petrology, 1999, 40(1):3~19. doi: 10.1093/petroj/40.1.3 CrossRef Google Scholar
[21]	程力军, 李志, 刘鸿飞, 等.冈底斯东段铜多金属成矿带的基本特征[J].西藏地质, 2001, 19(1):43~53. Google Scholar CHENG Li-jun, LI Zhi, LIU Hong-fei, et al. Basic features of the east Gangdise polymetallic metallogenic belt[J]. Tibet Geology, 2001, 19(1):43~53. Google Scholar
[22]	王全海, 王保生, 李金高, 等.西藏冈底斯岛弧及其铜多金属矿带的基本特征与远景评估[J].地质通报, 2002, 21(1):35~40. Google Scholar WANG Quan-hai, WANG Bao-sheng, LI Jin-gao, et al. Basic features and ore prospect evaluation of the Gangdise islang arc, Tibet, and its copper polymetallic ore belt[J]. Geological Bulletin of China, 2002, 21(1):35~40. Google Scholar
[23]	Beck R A, Burbank D W, Sercombe W J, et al. Stratigraphic evidence for an early collision between northwest India and Asia[J]. Nature, 1995, 373:55~58. doi: 10.1038/373055a0 CrossRef Google Scholar
[24]	Le Fort P. Metamorphism and magmatism during the Himalayan collision[C]//Coward M P, Ries A C. Collision Tectonics. Oxford:Blackwell Scientific Publications, 1986:159~172.http://adsabs.harvard.edu/abs/1986GSLSP..19..159L Google Scholar
[25]	Yin A, Harrison T M, Ryerson F J, et al. Tertiary structural evolution of the Gangdese thrust system, southeastern Tibet[J]. Journal of Geophysical Research, 1994, 99(B9):18175~18201. doi: 10.1029/94JB00504 CrossRef Google Scholar
[26]	Yin A, Harrison T M. Geologic evolution of the Himalayan-Tibetan orogen[J]. Annual Review of Earth and Planetary Sciences, 2000, 28:211~280. doi: 10.1146/annurev.earth.28.1.211 CrossRef Google Scholar
[27]	Coulon C, Maluski H, Bollinger C, et al. Mesozoic and Cenozoic volcanic rocks from central and southern Tibet:39Ar/40Ar dating, petrological characteristics and geodynamic significance[J]. Earth and Planetary Science Letters, 1986, 79(3-4):281~302. doi: 10.1016/0012-821X(86)90186-X CrossRef Google Scholar
[28]	李光明, 王高明, 高大发.西藏冈底斯南缘构造格架与成矿系统[J].沉积与特提斯地质, 2002, 22(2):1~7. Google Scholar LI Guang-ming, WANG Gao-ming, GAO Da-fa. The tectonic framework and metallogenic systems in southern Gangdise metallogenic belt, Xizang[J]. Sedimentary Geology and Tethyan Geology, 2002, 22(2):1~7. Google Scholar
[29]	梁华英, 魏启荣, 许继峰, 等.西藏冈底斯矿带南缘矽卡岩型铜矿床含矿岩体锆石U-Pb年龄及意义[J].岩石学报, 2010, 26(6):1692~1698. Google Scholar LIANG Hua-ying, WEI Qi-rong, XU Ji-feng, et al. Study on zircon LA-ICP-MS U-Pb age of skarn Cu mineralization related intrusion in the southern margin of the Gangdese ore belt, Tibet and its geological implication[J]. Acta Petrologica Sinica, 2010, 26(6):1692~1698. Google Scholar
[30]	陈毓川, 王登红, 徐志刚, 等.对中国成矿体系的初步探讨[J].矿床地质, 2006, 25(2):155~163. Google Scholar CHEN Yu-chuan, WANG Deng-hong, XU Zhi-gang, et al. Preliminary study of Chinese mineralization system[J]. Mineral Deposits, 2006, 25(2):155~163. Google Scholar