«上一篇/Previous Article|本期目录/Table of Contents|下一篇/Next Article»

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第34卷

期数:

2012年第04期

页码:

12-21

栏目:

基础地质与矿产地质

出版日期:

2012-12-20

文章信息/Info

Title:

Geological Feature and Genesis of Niubiziliang Cu-Ni Sulphide Deposit in the Northern Margin of Qaidam Block

作者:

赵彦锋¹; 2; 康珍¹; 2; 凌锦兰¹; 2; 赵双喜³; 王永刚³; 申大力³; 姜常义¹; 2

1.长安大学 地球科学与资源学院,陕西 西安 710054; 2.长安大学 西部矿产资源与地质工程教育部重点实验室,陕西 西安 710054; 3.青海省核工业地质局,青海 西宁 810000

Author(s):

ZHAO Yan-feng¹; 2;  KANG Zhen¹; 2;  LING Jin-lan¹; 2;  ZHAO Shuang-xi³;  WANG Yong-gang³;  SHEN Da-li³;  JIANG Chang-yi¹; 2

1. School of Earth Sciences and Resources, Chang’an University, Xi’an 710054, Shaanxi, China; 2. Key Laboratory of Western Mineral Resources and Geological Engineering of Ministryof Education, Xi’an 710054, Shaanxi, China; 3. Nuclear Industry Geological Bureau of Qinghai Province, Xining 810000, Qinghai, China

关键词:

镁铁质—超镁铁质岩体;  岩浆演化;  同化混染;  硫化物矿床;  熔离机制;  矿床成因;  成矿过程;  柴达木地块

Keywords:

mafic-ultramafic intrusion;  magmatic evolution;  contamination;  sulphide deposit;  segregation mechanism;  genesis of deposit;  mineralization process;  Qaidam Block

分类号:

P588.1

DOI:

-

文献标志码:

-

摘要:

牛鼻子梁岩体位于柴达木地块北缘俄博梁断隆区,是一个出露面积约8 km²的镁铁质—超镁铁质层状杂岩体,呈岩床状,东西向延长; 堆晶结构与堆晶层理发育,可划分出多个堆晶韵律与旋回,岩石类型丰富,具有橄榄岩相、辉石岩相和辉长岩相等多种岩石类型。中酸性端元的岩石类型有石英闪长岩和英云闪长岩,证明岩浆经历了以分离结晶为主导性机制的分异演化过程。岩浆富水,结晶出大量褐色普通角闪石,形成角闪石岩。岩体中含有大量的古元古界金水口岩群捕虏体,同化混染严重。该岩体内含有2层层状矿体,一层在海拔3 100 m处,另一层在海拔2 800～2 900 m处。此外,在岩体西端还有一个被断层活化迁移后赋存在断层带中的热液型矿体。矿石构造主要呈浸染状、海绵陨铁状和块状; 成矿过程可划分为3个成矿期(岩浆期、矿浆期和岩浆热液期)和4个成矿阶段。结果表明:岩浆自身的分异演化与同化混染作用共同导致了硫化物熔离; 成矿过程具有明显的多期多阶段性,而非连续过程。

Abstract:

Niubiziliang Intrusion, which is located at Eboliang Fault-uplift in the northern margin of Qaidam Block, is a mafic-ultramafic bedded complex with an outcrop area of about 8 km² in shape of sill with east-west extension; cumulate texture and cumulate layer developed, and the intrusion was divided into multiple cumulate rhythms and cycles; rock types were abundant and included peridotite phase, pyroxenite phase, gabbro phase, etc.; rock types of intermediate-acid end-member included quartz diorite and tonalite, so that magma underwent fractional crystallization which was the dominant mechanism of differentiation and evolution process. Magma was rich in water, so that a lot of brown hornblendes were crystallized, and hornblendite was formed. The rock body contained a large number of xenoliths in Jinshuikou Terrane of Paleoproterozoic, and the assimilation-contamination was serious. The intrusion included two layered ore bodies, and the altitudes of them were 3 100 m and 2 800-2 900 m, respectively. In addition, at the western end of rock body, there was a hydrothermal ore body in the fault zone which had been migrated and activated by faults. The structures of ore mainly included disseminated, sponge iron meteorite and massive; mineralization process could be divided into three periods(magmatic period, slurry period and magmatic hydrothermal period)and four stages. The results showed that magmatic differentiation evolution and assimilation-contamination jointly led to sulfide liquation; mineralization process was multi-phase and multi-stage rather than continuous.

参考文献/References:

[1] 汤中立.超大型岩浆硫化物矿床的类型及地质对比意义[J].甘肃地质学报,1992,1(1):24-47.TANG Zhong-li.Classification and Geological Contrastable Significance of Super Large Magmatic Sulfide Deposits[J].Acta Geologica Gansu,1992,1(1):24-47.
[2] 汤中立,李文渊.金川铜镍硫化物(含铂)矿床成矿模式及地质对比[M].北京:地质出版社,1995.TANG Zhong-li,LI Wen-yuan.Metallogenic Models and Geology Comparation of Jinchuan Cu-Ni Sulphide(Bearing-PGE)Deposits[M].Beijing:Geological Publishing House,1995.
[3] 汤中立.中国岩浆硫化物矿床的主要类型[J].甘肃地质学报,1996,5(1):45-49.TANG Zhong-li.Main Types of Magmatic Sulfide Deposits in China[J].Acta Geologica Gansu,1996,5(1):45-49.
[4] 汤中立.超大型Ni-Cu(Pt)岩浆矿床的划分与找矿[J].地质与勘探,2002,38(3):1-7.TANG Zhong-li.Dividing and Prospecting for Super-large Scale Ni-Cu(Pt)Magmatic Sulfide Deposits[J].Geology and Prospecting,2002,38(3):1-7.
[5] 汤中立.中国的小岩体岩浆矿床[J].中国工程科学,2002,4(6):9-12.TANG Zhong-li.Magmatic Ore Deposits in Small Rockbody in China[J].Engineering Science,2002,4(6):9-12.
[6] 汤中立.中国镁铁、超镁铁岩浆矿床成矿系列的聚集与演化[J].地学前缘,2004,11(1):113-119.TANG Zhong-li.The Accumulation and Evolution of Metallogenic Series of the Mafic-ultramafic Magmatic Deposits in China[J].Earth Science Frontiers,2004,11(1):113-119.
[7] 汤中立,钱壮志,姜常义,等.中国镍铜铂族岩浆硫化物矿床与成矿预测[M].北京:地质出版社,2006.TANG Zhong-li,QIAN Zhuang-zhi,JIANG Chang-yi,et al.Magmatic Ni-Cu-PGE Sulphide Deposits and Metallogenic Prognosis in China[M].Beijing:Geological Publishing House,2006.
[8] 汤中立,闫海卿,焦建刚,等.中国小岩体镍铜(铂族)矿床的区域成矿规律[J].地学前缘,2007,14(5):92-103.TANG Zhong-li,YAN Hai-qing,JIAO Jian-gang,et al.Regional Metallogenic Controls of Small-intrusion-hosted Ni-Cu(PGE)Ore Deposits in China[J].Earth Science Frontiers,2007,14(5):92-103.
[9] 汤中立,钱壮志,姜常义,等.岩浆硫化物矿床勘查研究的趋势与小岩体成矿系统[J].地球科学与环境学报,2011,33(1):1-9.TANG Zhong-li,QIAN Zhuang-zhi,JIANG Chang-yi,et al.Trends of Research in Exploration of Magmatic Sulfide Deposits and Small Intrusions Metallogenic System[J].Journal of Earth Sciences and Environment,2011,33(1):1-9.
[10] 许 成,黄智龙,刘丛强,等.铂族元素地球化学研究评述[J].地学前缘,2003,10(4):520-528.XU Cheng,HUANG Zhi-long,LIU Cong-qiang,et al.Review on Geochemistry of Platinum-group Elements[J].Earth Science Frontiers,2003,10(4):520-528.
[11] NALDRETT A J.Magmatic Sulfide Deposits[M].Oxford:Clarendon Press,1989.
[12] NALDRETT A J,SINGH J,KRSTIC S,et al.The Mineralogy of the Voisey’s Bay Ni-Cu-Co Deposit,Northern Labrador,Canada:Influence of Oxidation State on Textures and Mineral Compositions[J].Economic Geology,2000,95(4):889-900.
[13] NALDRETT A J,LIGHTFOOT P C,FEDORENKO V,et al.Geology and Geochemistry of Intrusions and Flood Basalts of the Noril’sk Region USSR,with Implication for the Origin of the Ni-Cu Ores[J].Economic Geology,1992,87(4):975-1004.
[14] 姜常义,夏昭德,凌锦兰,等.寄主岩浆硫化物和氧化物矿床的镁铁质—超镁铁质岩体对比分析与成矿过程评述[J].岩石学报,2011,27(10):3005-3020.JIANG Chang-yi,XIA Zhao-de,LING Jin-lan,et al.Comparison of Host Magmatic Sulphide and Oxide Deposits of Mafic-ultramafic Intrusions and Review the Mineralizing Process[J].Acta Petrologica Sinica,2011,27(10):3005-3020.
[15] 陈殿芬.我国一些铜镍硫化物矿床主要金属矿物的特征[J].岩石矿物学杂志,1995,14(4):345-354.CHEN Dian-fen.Characteristics of Main Metallic Minerals in Some Copper-nickel Sulfide Deposits of China[J].Acta Petrologica et Mineralogica,1995,14(4):345-354.
[16] NALDRETT A J.Magmatic Sulfide Deposits:Geology,Geochemistry and Exploration[M].Berlin:Springer,2004.
[17] 罗照华,马拉库舍夫 A A,潘妮亚 H A,等.铜镍硫化物矿床的成因——以诺里尔斯克(俄罗斯)和金川(中国)为例[J].矿床地质,2000,19(4):330-339.LUO Zhao-hua,MARAKUSHEV A A,PARNIAKH H A,et al.The Origin of Copper-nickle Sulfide Deposits—Exemplified by Norilsk(Russia)and Jinchuan(China)[J].Mineral Deposits,2000,19(4):330-339.
[18] LI C,NALDRETT A J.High Chlorine Alteration Minerals and Calcium-rich Brines in Fluid Inclusions from the Strathcona Deep Copper Zone,Sudbury,Ontario[J].Economic Geology,1993,88(7):1780-1796.
[19] RIPLEY E M.Systematics of Sulfur and Oxygen Isotopes in Mafic Igneous Rocks and Related Cu-Ni-PGE Mineralization[C]∥KEAYS R R,LESHER C M,LIGHTFOOT P C,et al.Dynamic Processes in Magmatic Ore Deposits and Their Application to Mineral Exploration.Toronto:Geological Association of Canada,1999:111-158.
[20] LI C S,RIPLEY E M.Empirical Equations to Predict the Sulfur Content of Mafic Magmas at Sulfide Saturation and Applications to Magmatic Sulfide Deposits[J].Mineralium Deposita,2005,40(2):218-230.
[21] 宋谢炎,肖家飞,朱 丹,等.岩浆通道系统与岩浆硫化物成矿研究新进展[J].地学前缘,2010,17(1):153-163.SONG Xie-yan,XIAO Jia-fei,ZHU Dan,et al.New Insights on the Formation of Magmatic Sulfide Deposits in Magma Conduit System[J].Earth Science Frontiers,2010,17(1):153-163.
[22] 杨合群.金川铜镍矿床硫同位素地球化学[J].西北地质,1989(2):20-23.YANG He-qun.Sulfur Isotope Geochemistry of Jinchuan Copper-nickel Deposit[J].Northwestern Geology,1989(2):20-23.
[23] 董国振,叶满华,戴晓光,等.吉林红旗岭矿区3号岩体铜镍硫化物矿床岩石学和地球化学特征研究[J].矿产勘查,2012,3(3):297-304.DONG Guo-zhen,YE Man-hua,DAI Xiao-guang,et al.Petrology and Geochemistry Characteristics of the Cu-Ni Sulfide Deposits of the 3rd Rocks in Hongqiling Area,Jilin[J].Mineral Exploration,2012,3(3):297-304.
[24] 刘 默.吉林红旗岭铜镍硫化物矿床地质特征及成因研究[D].长春:吉林大学,2005.LIU Mo.Studies on Geological Characteristics and Genesis of Cu-Ni Sulphide Deposit in Hongqiling of Jilin[D].Changchun:Jilin University,2005.
[25] 孙 涛,钱壮志,党新生,等.喀拉通克铜镍矿床硫同位素组成特征及其地质意义[J].地球科学与环境学报,2010,32(4):344-349.SUN Tao,QIAN Zhuang-zhi,DANG Xin-sheng,et al.Characteristics of Sulfur Isotope in Kalatongke Cu-Ni Deposit and Its Geological Significance[J].Journal of Earth Sciences and Environment,2010,32(4):344-349.
[26] CHAUSSIDON M,LORAND J P.Sulphur Isotope Composition of Orogenic Spinel Iherzolite Massifs from Ariege(North-eastern Pyrenees,France):An Ion Microprobe Study[J].Geochimica et Cosmochimica Acta,1990,54(10):2835-2846.
[27] WHITE W M.Geol.656 Isotope Geochemistry[R].Ithaca:Cornell University,2003.

相似文献/References:

[1]杨 阳,柯昌辉*,王晓霞,等.北秦岭蟒岭花岗岩体岩浆演化及源区:来自矿物学和Sr-Nd-Hf同位素证据[J].地球科学与环境学报,2022,44(04):658.[doi:10.19814/j.jese.2022.02033]
　YANG Yang,KE Chang-hui*,WANG Xiao-xia,et al.Magmatic Evolution and Origin of Mangling Granitic Pluton in North Qinling, China: Evidence from Mineralogy and Sr-Nd-Hf Isotopes[J].Journal of Earth Sciences and Environment,2022,44(04):658.[doi:10.19814/j.jese.2022.02033]

备注/Memo

备注/Memo:

收稿日期:2012-09-10
基金项目:国家自然科学基金项目(41102045); 青海省核工业地质局项目
作者简介:赵彦锋(1986-),男,陕西府谷人,理学硕士研究生,E-mail:jilik@126.com。

常用功能

更新日期/Last Update: 2012-12-20