云南富宁两期基性岩地球化学性质与金矿成矿
Geochemical Characteristics of Two Stages of Basic Dykes and Gold Mineralization at Funing,Yunnan Province,China
查看参考文献78篇
|
文摘
|
基性岩与金矿的关系一直备受关注。本文研究了富宁周边分布的2期基性岩,以及该地区的几个大型金矿。结果表明,早期基性岩的U-Pb年龄为(258±5) Ma,与前人研究成果相吻合,认为富宁早期基性岩与峨眉山地幔柱相关。晚期基性岩~(206)Pb /~(238)U年龄为(219.9±6.6) Ma (MSWD = 1.2),与早期基性岩差异明显。晚期基性岩的主微量和稀土元素研究均显示可能存在俯冲物质混染,熔体源区为富集岩石圈地幔端元(EMORB)和亏损岩石圈地幔端元(N-MORB)部分熔融的混合产物。结合前人对该地区构造活动的研究,认为晚期基性岩来源于地幔并受俯冲物质污染。矿相学与地球化学的研究显示,2期基性岩对于金矿的形成均有贡献,早期基性岩提供了有限的作用,而晚期基性岩年龄与该区几个大型金矿成矿年龄大致相吻合,结合地球化学分析与前人研究,认为晚期基性岩除了大量萃取地层成矿物质外,也是成矿流体循环成矿的重要热源,加之频繁的构造活动对早期矿床的叠加成矿作用,最终形成该区的几个大型金矿。因此晚期基性岩与该区金矿成矿有密切关系,是该区下一步寻大矿揪小矿的重要标志。 |
|
其他语种文摘
|
The relationship between basic rocks and gold deposits has always been paid much attention. In this paper, two basic dykes and several large gold deposits in the Funing area have been studied. The results show that,the U-Pb age of 258±5 Ma for the early basic rock is consistent with those of previous studies which had shown that the early basic rock in the Funing area was associated with the Emeishan mantle plume. The ~(206)Pb /~(238)U age of 219.9±6.6 Ma (MSWD= 1.2) for the late basic rock suggest that it is significantly different from the early basic rock. The study on the major,trace,and rare earth elements of the late basic rock shows that there could be subduction material contamination for the magma which was a mixture of melts derived from the partial melting of the enriched lithospheric mantle (E-MORB) and the depleted lithospheric mantle (N-MORB). Combined with previous researches on the tectonic activity in the region,it was concluded that the late basic rock was derived from the mantle and contaminated by subduction materials. A comprehensive study of mineralography and geochemistry shows that the basic rocks of two stages had contribution to the formation of gold deposits. The early basic rock played a limited role for the gold mineralization. Due to the age of the late basic rock is roughly coincided with the metallogenic ages of several large gold deposits in the region,with the combination of the geochemical analyses and previous studies,it is believed that the late basic rock has provided not only ore-forming materials mainly extracted from strata,but also an important heat source for the metallogenic fluid circulation and mineralization. Together with superposed mineralization of frequent tectonic activities on early deposits,several large gold deposits were finally formed in this area. Therefore,we think that the late basic rock could be closely related to the gold mineralization in this region,and it is an important sign for further exploring various sized gold deposits in the area. |
|
来源
|
矿物学报
,2018,38(5):499-513 【核心库】
|
|
DOI
|
10.16461/j.cnki.1000-4734.2018.38.231
|
|
关键词
|
基性岩
;
U-Pb定年
;
地球化学特征
;
岩石成因
;
金矿
|
|
地址
|
1.
桂林理工大学地球科学学院, 广西, 桂林, 541004
2.
桂林理工大学, 广西隐伏金属矿产勘查重点实验室, 广西, 桂林, 541004
3.
中国科学院地球化学研究所, 矿床地球化学国家重实验室, 贵州, 贵阳, 550081
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1000-4734 |
|
学科
|
地质学 |
|
基金
|
国家自然科学基金项目
;
广西自然科学基金
;
国家自然科学基金项目
;
广西自然科学基金
;
广西高等学校高水平创新团队及卓越学者计划
|
|
文献收藏号
|
CSCD:6452549
|
参考文献 共
78
共4页
|
|
1.
涂光炽. 我国西南地区两个别具一格的成矿带（域）.
矿物岩石地球化学通报,2002,21(1):1-2
|
CSCD被引
41
次
|
|
|
|
|
2.
Mcneil A M. Archean lamprophyre dykes and gold mineralization,Matheson,Ontario: the conjunction of LILEenriched mafic magmas, deep crustal structures, and Au concentration.
Canadian Journal of Earth Sciences,1986,23(3):324-343
|
CSCD被引
8
次
|
|
|
|
|
3.
Chen Yaohuang. Geochemistry of lamprophyres at the Daping gold deposit,Yunnan Province, China: Constraints on the timing of gold mineralization and evidence for mantle convection in the eastern Tibetan Plateau.
Journal of Asian Earth Sciences,2014,93(1):129-145
|
CSCD被引
12
次
|
|
|
|
|
4.
Lanjewar Shubhangi. Lamprophyres from the Harohalli Dyke Swarm in the Halaguru and Mysore Areas, Southern India: Implication for Backarc Basin Magmatism.
Elsevier Ltd,2017,157(2):329-347
|
CSCD被引
1
次
|
|
|
|
|
5.
Gan Ting. Platinum-group element and Re-Os geochemistry of lamprophyres in the Zhenyuan gold deposit, Yunnan Province,China: Implications for petrogenesis and mantle evolution.
Elsevier B.V,2017,282/283(2):228-239
|
CSCD被引
1
次
|
|
|
|
|
6.
Yan Yutong. Mineral chemistry and isotope geochemistry of pyrite from the Heilangou gold deposit, Jiaodong Peninsula, Eastern China.
Geoscience Frontiers,2014,5(2):205-213
|
CSCD被引
18
次
|
|
|
|
|
7.
Groves D I. Orogenic gold deposits: A proposed classification in the context of their crustal distribution and relationship to other gold deposit types.
Ore Geology Reviews,1998,13(1):7-27
|
CSCD被引
403
次
|
|
|
|
|
8.
Kovalev K R. Disseminated gold-sulfide mineralization at the Zhaima deposit,eastern Kazakhstan.
Pleiades Publishing,2016,58(2):116-133
|
CSCD被引
1
次
|
|
|
|
|
9.
皮桥辉. 云南富宁者桑金矿床与基性岩年代测定—兼论滇黔桂地区卡林型金矿成矿构造背景.
岩石学报,2016,32(11):3331-3342
|
CSCD被引
21
次
|
|
|
|
|
10.
苏文超. 中国西南部卡林型金矿床流体包裹体年代学研究.
矿物学报,1998,18(3):359-362
|
CSCD被引
42
次
|
|
|
|
|
11.
陈阳阳. 黔西南水银洞卡林型金矿地质地球化学特征及成因.
中国地质调查,2016,3(2):10-14
|
CSCD被引
2
次
|
|
|
|
|
12.
庞保成. 滇黔桂地区微细浸染型金矿成因的地球化学制约.
地学前缘,2000,7(3):38
|
CSCD被引
4
次
|
|
|
|
|
13.
Chen Maohong. The Carlin-type gold deposits of the"golden triangle"of SW China: Pb and S isotopic constraints for the ore genesis.
Journal of Asian Earth Sciences,2015,103(1):115-128
|
CSCD被引
22
次
|
|
|
|
|
14.
Ressel M W. Igneous Geology of the Carlin Trend,Nevada: Development of the Eocene Plutonic Complex and Significance for Carlin-Type Gold Deposits.
Economic Geology,2006,101(2):347-383
|
CSCD被引
21
次
|
|
|
|
|
15.
Sillitoe R H. Special Paper: Major Gold Deposits and Belts of the North and South American Cordillera: Distribution, Tectonomagmatic Settings, and Metallogenic Considerations.
Economic Geology,2008,103(4):663-687
|
CSCD被引
17
次
|
|
|
|
|
16.
张静. 滇东南老寨湾金矿床地质及同位素特征.
岩石学报,2014,30(9):2657-2668
|
CSCD被引
3
次
|
|
|
|
|
17.
Feng Jianzhong. Magmatic Gold Mineralization in the Western Qinling Orogenic Belt: Geology and Metallogenesis of the Baguamiao,Liba and Xiaogouli Gold Deposits.
Acta Geologica Sinica,2004,78(2):529-533
|
CSCD被引
7
次
|
|
|
|
|
18.
何鸿. 陕西八卦庙金矿床成矿流体He、Ar、H、O同位素特征.
黄金,2009,30(8):9-11
|
CSCD被引
9
次
|
|
|
|
|
19.
文志林. 湘东北万古金矿床控矿构造特征与控矿规律研究.
大地构造与成矿学,2016,7(2):281-294
|
CSCD被引
16
次
|
|
|
|
|
20.
毛景文. 湖南万古金矿床地幔流体成矿的氦同位素证据.
地质论评,1997,43(6):646-649
|
CSCD被引
36
次
|
|
|
|
|
了解气象卫星更多信息，请访问