全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
地质学报  2009 

西藏玉龙铜钼矿同位素年代学研究

, PP. 1445-1455

Keywords: 年代学,玉龙铜钼矿,斑岩,SHRIMP,找矿潜力

Full-Text   Cite this paper   Add to My Lib

Abstract:

西藏玉龙铜钼矿是三江地区玉龙成矿带上的超大型铜矿。随着矿区开采工作的启动,矿区外围的找矿工作也逐渐展开。本文在矿区外围找矿项目中,对矿区及外围的年代学进行了研究,采用高精度离子探针方法对矿区及外围的岩体进行了年代学测试,获得玉龙铜钼矿两件含矿黑云母二长花岗斑岩的成岩年龄分别为主矿区岩体时代为43.0±0.5Ma(MSWD=1.3)、43.8±0.7Ma(MSWD=2.6);矿区外围北部甘龙拉地区石英二长花岗斑岩岩体时代为43.9±0.6Ma(MSWD=1.19),矿区外围南部的纳加扎地区黑云母二长花岗斑岩岩体时代为41.4±0.6Ma(MSWD=1.6)。表明玉龙斑岩铜钼矿带岩体主要于中始新世沿碰撞产生的拉分盆地侵入、就位,并且具有由北向南逐渐演化的趋势。矿区北部地区具有一定的找矿潜力。结合三江地区其它矿床的年代学数据和动力学背景,认为以玉龙铜钼矿为中心往北及往南均存在较大的矿找矿潜力。

References

[1]  芮宗瑶,陆彦,李光明,王龙生,王义天. 西藏斑岩铜矿的前景展望[J]中国地质, 2003,(03).
[2]  芮宗瑶,李光明,张立生,王龙生. 西藏斑岩铜矿对重大地质事件的响应[J]地学前缘, 2004,(01).
[3]  曾普胜,侯增谦,高永峰,杜安道. 印度―亚洲碰撞带东段喜马拉雅期铜―钼―金矿床Re-Os年龄及成矿作用[J]地质论评, 2006,(01).
[4]  杜安道,何红蓼,殷宁万,邹晓秋,孙亚利,孙德忠,陈少珍,屈文俊. 辉钼矿的铼-锇同位素地质年龄测定方法研究[J]地质学报, 1994,(04).
[5]  王登红,屈文俊,李志伟,应汉龙,陈毓川. 金沙江-红河成矿带斑岩铜钼矿的成矿集中期:Re-Os同位素定年[J]中国科学(D辑:地球科学), 2004,(04).
[6]  梁华英. 青藏高原东南缘斑岩铜矿成岩成矿研究取得新进展[J]矿床地质, 2002,(04).
[7]  侯增谦,吕庆田,王安建,李晓波,王宗起,王二七. 初论陆-陆碰撞与成矿作用――以青藏高原造山带为例[J]矿床地质, 2003,(04).
[8]  唐菊兴,张丽,李志军,陈建平,黄卫,王乾. 西藏玉龙铜矿床――鼻状构造圈闭控制的特大型矿床[J]矿床地质, 2006,(06).
[9]  应立娟,唐菊兴,王登红,畅哲生,屈文俊,郑文宝. 西藏甲玛铜多金属矿床矽卡岩中辉钼矿铼-锇同位素定年及其成矿意义[J]岩矿测试, 2009,(03).
[10]  王召林,杨志明,杨竹森,田世洪,刘英超,马彦青,王贵仁,屈文俊. 纳日贡玛斑岩钼铜矿床:玉龙铜矿带的北延――来自辉钼矿Re-Os同位素年龄的证据[J]岩石学报, 2008,(03).
[11]  梁华英,谢应雯,张玉泉,Ian Campbell. 富钾碱性岩体形成演化对铜矿成矿制约――以马厂箐铜矿为例[J]自然科学进展, 2004,(01).
[12]  Hua-Ying Liang,Ian H. Campbell,Charlotte Allen,Wei-Dong Sun,Cong-Qiang Liu,Heng-Xiang Yu,Ying-Wen Xie,Yu-Qiang Zhang. Zircon Ce4+/Ce3+ ratios and ages for Yulong ore-bearing porphyries in eastern Tibet[J] Mineralium Deposita, 2006,41, (2).
[13]  Patriat P, Achache J. Indian-Eurasia collision chronology has implications for crustal shortening and driving mechanism of plates.Nature,1984,311:615-621.
[14]  Spurlin M S,Yin A,Horton B K,Zhou J Y ,and Wang J H. Structural evolution of the Yushu-Nangqian region and its relation-ship to syncollisional igneous activity,east-central Tibet[J].GSABulletin.2005,117:1293~1317.
[15]  Compston W, Williams I S, Kirschvink J L,et al. Zircon U-Pb ages of early Cambrian time-scale.Journal of Geological Society of London,1992,149:171-184.
[16]  Yin A, Harrison TM. Geologic evolution of the Himalayan-Tibetan orogen.Annual Review of Earth and Planetary Sciences,2000,28:211-280.
[17]  Hou Z Q,Zeng P S,Gao Y F,Du A D,Fu D M. Hi malayanCu-Mo-Au miealization in the eastern Indo-Asian collisionzone:Constraints from Re-Os dating of molybdenite.Mieralium Deposita.2006,41:33~45.
[18]  Minster J F,Richard L P,Allegre C J. 87Rb-87Sr chronologyof enstatite meteorites.Earth Planet.Sci.Lett.1979,44:420~440.
[19]  Tapponnier P,Lacassin R,Leloup Ph,Scharer U,Zhong D L,Hai wei,Liu X H,Zhang L S,Zhong J Y. TheAilao Shan(Ailao Mt)―Red River(Honghe River)metamorphic belt:Tertiaryleft-lateral shear between Indochinaand South China.Nature.1990,343:431~437.
[20]  Williams I S,Claesson S. Isotopic evidence for thePrecambrian provenance and Caledonian metamorphism of highgrade parag-neisses from the Seve Nappes,ScandinavianCaledonides:Ⅱ.Ionmicroprobe zircon U-Th-Pb.Contributionsto Mineralogy and Petrology,1987,97:205~217.
[21]  Wang J H,Yin A,Harrison T M,Grove M,Zhang Y Q,Xie G H. A tectonic model for Cenozonic igneous activities in theeastern Indo-Asian collision zone.Earth and Planetary ScienceLetters,2001,188:123~133.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133