新疆白杨河铍铀矿床萤石Sm-Nd和沥青铀矿U-Pb年代学及其地质意义

被引:21
作者
衣龙升 [1 ,2 ]
范宏瑞 [1 ]
翟明国 [1 ]
李月湘 [2 ]
马汉峰 [2 ]
田建吉 [2 ]
修晓茜 [2 ]
机构
[1] 中国科学院矿产资源研究重点实验室中国科学院地质与地球物理研究所
[2] 核工业北京地质研究院
关键词
Sm-Nd同位素测年; 萤石; U-Pb同位素定年; 沥青铀矿; 羟硅铍石; 新疆白杨河矿床;
D O I
暂无
中图分类号
P597.3 []; P619.14 [铀];
学科分类号
070902 ; 0709 ; 081803 ;
摘要
白杨河矿床是我国类型独特的一个特大型铍、铀多金属矿床,铍矿物主要确定为羟硅铍石,铀矿物主要发现沥青铀矿和次生的硅钙铀矿以及少量的铌铀矿,伴生矿物主要是萤石。为恢复铀和铍的成矿过程,划分成矿阶段,本次工作通过系统采集钻孔中的萤石样品,进行了Sm-Nd同位素测年研究,获得了三组等时线年龄,分别为291±16Ma、265±33Ma和207±37Ma,代表了成矿前、成矿期和成矿后萤石的形成;采集中心工地、新西工地和九号工地平巷内的沥青铀矿样品,进行了UPb同位素测年研究,获得了206Pb/238U表观年龄237.8±3.3Ma、224±3.1Ma、197.8±2.8Ma、97.8±1.4Ma和30.0±0.4Ma,利用U-Pb表观年龄将铀矿化划分为四个阶段:中三叠世、晚三叠-早侏罗世、晚白垩世和古近纪中期。因此,白杨河矿床具有铍早铀晚的成矿特点,铀成矿经历了四个阶段。
引用
收藏
页码:2099 / 2110
页数:12
相关论文
共 42 条
[11]  
The Yermakovsky deposit, Western Transbaikal Region, Russia: Isotopic and geochemical parameters and sources of beryllium-bearing granitoids and other rocks[J] . D. A. Lykhin,V. I. Kovalenko,V. V. Yarmolyuk,A. B. Kotov,V. P. Kovach.Geology of Ore Deposits . 2010 (4)
[12]  
End-Permian to mid-Triassic termination of the accretionary processes of the southern Altaids: implications for the geodynamic evolution, Phanerozoic continental growth, and metallogeny of Central Asia[J] . W. J. Xiao,B. F. Windley,B. C. Huang,C. M. Han,C. Yuan,H. L. Chen,M. Sun,S. Sun,J. L. Li.International Journal of Earth Sciences . 2009 (6)
[13]  
Emerald deposits and occurrences: A review[J] . L.A. Groat,G. Giuliani,D.D. Marshall,D. Turner.Ore Geology Reviews . 2008 (1)
[14]  
Alkaline granites and Be (Phenakite-bertrandite) mineralization: An example of the Orot and Ermakovka deposits[J] . F. G. Reyf.Geochemistry International . 2008 (3)
[15]  
Multi-stage emerald formation during Pan-African regional metamorphism: The Zabara, Sikait, Umm Kabo deposits, South Eastern desert of Egypt[J] . G. Grundmann,G. Morteani.Journal of African Earth Sciences . 2007 (2)
[16]  
Middle Cambrian to Permian subduction-related accretionary orogenesis of Northern Xinjiang, NW China: Implications for the tectonic evolution of central Asia[J] . Wenjiao Xiao,Chunming Han,Chao Yuan,Min Sun,Shoufa Lin,Hanlin Chen,Zilong Li,Jiliang Li,Shu Sun.Journal of Asian Earth Sciences . 2007 (2)
[17]  
The Sr and Nd isotopic variations of the Chinese Loess Plateau during the past 7 Ma: Implications for the East Asian winter monsoon and source areas of loess[J] . Yin-Xi Wang,Jie-Dong Yang,Jun Chen,Kai-Jun Zhang,Wen-Bo Rao.Palaeogeography, Palaeoclimatology, Palaeoecology . 2007 (3)
[18]  
Fluorine-beryllium deposits of the Vitim Highland, western Transbaikal region: Mineral types, localization conditions, magmatism, and age[J] . K. B. Bulnaev.Geology of Ore Deposits . 2006 (4)
[19]  
The petrogenesis of topaz rhyolites from the western United States[J] . E. H. Christiansen,D. M. Burt,M. F. Sheridan,R. T. Wilson.Contributions to Mineralogy and Petrology . 1983 (1)
[20]   论天山古洋盆关闭的地质时限——来自伊宁地块石炭系的新证据 [J].
李永军 ;
李注苍 ;
佟丽莉 ;
高占华 ;
佟黎明 .
岩石学报, 2010, 26 (10) :2905-2912