摘要
黄山地区位于中亚造山带南部的黄山-镜儿泉韧性剪切带,是我国重要的铜镍硫化物矿床分布区。本文以该带中黄山和黄山东铜镍矿床为例,就韧性剪切作用对矿床的叠加富集机制进行了探讨,研究结果表明黄山东岩体及其中的铜镍矿受韧性剪切作用影响显著,而黄山岩体及其中的铜镍矿床受韧性剪切作用影响微弱。
本论文在收集、整理了前人资料的基础上,结合对矿区含矿岩体的现场调研和对矿石标本的镜下观察及电子探针的测试分析,对黄山、黄山东铜镍硫化物矿床的岩石学、矿床学、矿物学特征进行系统研究,包括对黄山、黄山东铜镍硫化物矿床的矿体形态、产状、矿石类型、矿石结构构造、矿物成分的研究,特别是对各类金属矿物的矿物学特征和组合类型的分析和电子探针测试,取得如下主要成果:
①黄山东、黄山矿床的成矿过程主要分为:岩浆期、热液期、剪切-热液期和表生期四个期次;
②韧性剪切作用与黄山东、黄山岩体的岩浆侵位和成矿作用在时间上是一致的;
③剪切-热液作用使矿石矿物中的主量元素、微量元素发生了明显的活化再分配;
④韧性剪切成矿作用与岩浆和热液成矿作用的叠加促进了黄山东和黄山硫化物矿床中的Cu-Ni等有用元素的再富集。
The Huangshan area which is located in Huangshan-Jingˊerquan ductile shear zone belongs to southern part of the Central Asian orogenic belt, is one of the main mineralization area of the Cu-Ni sulfide deposit distributed extensively. In this paper, case study on the Huangshan and Huangshangdong copper-nickel sulfide deposits in the zone, it is discussed on that the ductile shearing metallogenic make superposition and re-enrichment for the deposits. The result is showed in which the Huangshandong pluton and the copper-nickel mine was significantly affected by ductile shearing,while the Huangshan pluton and the Huangshan Cu-Ni deposit was weakly influenced by ductile shearing.
This paper collects and collates the date and documents of predecessors. With carefully observation and the electronic probe study of the samples of rocks and minerals from the mining area, the researcher conducted a systematic study of mineralogical petrological and oregeological characteristics of Huangshan and Huangshandong copper-nickel sulphide deposits. Based on the study and observation of the ore bodys, ore types structure and mineral composition of Huangshan and Huangshandong deposits, especially the mineralogical characteristics and the association of various metal minerals. The main results are drawed as follows:
①Ore-forming process of Huangshandong and Huangshan nickel-copper deposits includes four periods: magma period, hydrothermal stage, shear period and weathering period.
②Ductile shearing and magma emplacement and mineralization of the Huangshandong and Huangshan complex-body are consistent in time.
③It is indicate that essential and trace elements are activated and reallocated with shear and hydrothermal mineralization.
④Superposition of ductile shearing mineralization and magma and hydrothermal mineralization facilitate the re-enrichment of copper-nickel in the Huangshandong and Huangshan Cu-Ni deposits.
引文
[1]汤中立,李文渊.金川铜镍硫化物模式及地质特征对比.北京:地质出版社.1995.
[2]陈毓川,赵逊,张之一,等.世纪之交的地球科学-重大地学领域进展[M].北京:地质出版社,2000.
[3]王瑞延,毛景文,柯洪,等.铜镍岩浆硫化物矿床成矿作用研究综述.矿产与地质,2003,17(增刊):281-284.
[4]毛景文,Franco Pirajno,张作衡,等.天山-阿尔泰东部地区海西晚期后碰撞铜镍硫化物矿床:主要特点及与地幔柱关系.2006.
[5]王登红,陈毓川,徐志刚,等.新疆北部Ni-Cu-(PEG)硫化物矿床成矿系列探讨.矿床地质,2000,19(2):147-155.
[6]王有标.新疆铜镍硫化物矿床地基地质特点.1990,8:305-320.
[7]Barnes SJ,Naldrett AJ,Gorton MP.The origin of the fractionation of platinum-group elements in terrestrial magmas[J].Chem Geol,1985,53:303-323.
[8]Keays RR.The role of komatiitic and picritic magmatism and Ssaturation in the formation of the ore deposits[J].Lithos,1995,34,1-18.
[9]Lightfoot PC,Hawkesworth CJ.Flood basalts and magmatic Ni,Cu and PGE sulphide mineralization:Comparative geochemistry of the Noril’sk(Siberian Trap)and West Greenland Sequences.In:Mahoney JJ,Coffin MF,eds.large igneous province [ C ] .Washington DC,Amercian Geophysical Union:1997,357-380.
[10]Naldrett AJ,World-class Ni-Cu-PGE deposits:key factors in their genesis[J].Mineralium Deposita,1999,34:227-240.
[11]汤中立.中国岩浆硫化物矿床的主要成矿机制[J].地质学报,1996,70(3):237-243.
[12]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.
[13]汤中立,闫海卿,焦建刚等.中国岩浆硫化物矿床新分类与小岩体成矿作用[J].矿床地质,2006,Vo.124(1):2-7.
[14]汤中立.中国硫化镍矿床类型[J].地质学报,1987,27(4):350-369.
[15]汤中立,S.J.Barnes,岩浆硫化物矿床成矿机制,北京:地质出版社,1998.
[16]王润民,刘德权,殷定泰.新疆哈密土墩-黄山一带铜镍硫化物矿床成矿控制条件及找矿方向的研究[J].矿物岩石,1987,7(1):1-152.
[17]倪志耀.新疆哈密黄山东镁铁-超镁铁杂岩体成因探讨[J].西北地质,1992,13(2):9-16.
[18]倪志耀.岩浆深渊分异在新疆黄山东杂岩体成岩成矿中的作用[J].成都地质学院学报,1993,20(2):33-39.
[19]毛景文,杨建民,屈文俊,等.新疆黄山东铜镍硫化物矿床Re-Os同位素测定及其地球动力学意义[J].矿床地质,2002,21(4):323～330.
[20]Zhang Zuoheng,Mao Jingwen,Du Andao,et al.Re-Os dating of two Cu-Ni sulfide deposits in northern Xinjiang,NW China and its geological significance[J].Journal of Asian Earth Sciences,2008,32:204～217.
[21]柴凤梅.新疆北部三个与岩浆型Ni-Cu硫化物矿床有关的镁铁-超镁铁质岩的地球化学特征对比研究[D].北京:中国地质科学院,2006
[22]Zhou M F,Lesher C M .Yang Z X, Li J W.Sun M.2004.Geochemistry and petrogenesis of 270 Ma Ni-Cu-(PGE ) sulfide-bearing mafic intrusions in the Huangshan district,Eastern Xinjiang, Northwestern China: Implication for the tectonic evolution of the Central Asian orogenic belt. Chemical Geology,209:233～257.
[23]韩宝福,季建清,宋彪,陈立辉,李宗怀.2004.新疆喀拉通克和黄山东镁铁-超镁铁杂岩体的SHRIMP锆石U-Ph年龄及其地质意义.科学通报,22:2324～2328.
[24]钟应先.黄山杂岩体的地球化学特征及其意义[J].矿物岩石,1991,11(1):3-14.
[25]李华芹,谢才富,常海亮,蔡红,朱家平,周肃.1998.新疆北部有色贵金属矿床成矿作用年代学.北京:地质出版社,202～221.
[26]顾连兴,张遵忠,吴昌志,王银喜,唐俊华,汪传胜,郗爱华,郑远川.2006.关于东天山花岗岩与陆壳垂向增生的若干认识.岩石学报,22(5):1103～1120.
[27]慕纪录.新疆哈密黄山铜镍矿床中浅富矿体特征及形成机制[ J ] .矿物岩石,1996,13(2):9-16.
[28]冯益民.新疆西部构造发展史.中国北方板块构造文集(第一集).北京:地质出版社,1986.
[29]李先梓、李行.新疆铂族元素成矿地质条件及找矿方向研究[J].1991,33:2-13.
[30]肖序常,汤耀庆,冯益民,等.1992.新疆北部及邻区大地构造.北京:地质出版社.
[31]杨炳滨.新疆北部岩浆型铜镍硫化物矿床控矿因素的研究[J].矿产与地质,1994,8(5):330-333.
[32]秦克章,方同辉,王书来,朱宝清. 2002.东天山板块构造分区、演化与成矿地质背景研究.新疆地质,20(4):302～308.
[33]吴华,李华芹,莫新华,陈富文,路远发,梅玉萍,邓岗.2005.新疆哈密白石泉铜镍矿区基性-超基性岩的形成时代及其地质意义.地质学报,79:498～502.
[34]孙赫,秦克章,李金祥,徐兴旺,三金柱,丁奎首,惠卫东,许英霞.东天山图拉尔根铜镍钴硫化物矿床岩相、岩石地球化学特征及其形成的构造背景[J].中国地质,2006,33(3):606-617.
[35]毛启贵,肖文交,韩春明,等.新疆东天山白石泉铜镍矿床基性-超基性岩体锆石U-Pb同位素年龄、地球化学特征及其对古亚洲洋闭合时限的制约[J].岩石学报,2006,22(1): 153～162.
[36]Gu LX,Hu SX,Zhang ZZ,Gou XQ,Liu SH,Zheng YC and Zhang GH.2007.Geochemistry of the Baishitouquan topaz-bearing amazonite granite:Zoning and magma evolution.Geological Journal of China Universities,13(2):207-213(in Chinese with English abstract)
[37]竺国强,杨树锋,陈汉林.新疆香山铜镍含矿镁铁超镁铁杂岩体控岩控矿构造探讨[J].地质找矿论丛,1995,10(3):1-13.
[38]孙燕,慕纪录,肖渊甫.新疆香山铜镍硫化物矿床浅富矿体特征[J].矿物岩石.1996.16(1):51-57.
[39]王玉往,王京斌,王莉娟,方同辉.新疆哈密黄山地区铜镍硫化物矿床的稀土元素特征及意义[J].岩石学报.2004.20(4):35-48.
[40]李承德,慕纪录,竺国强等.1996.新疆哈密黄山成矿带浅富矿成因与成矿规律.成都:成都科技大学出版社.
[41]Coleman R.1989.Continental growth of Northwest China.Tectonics,8:621～635.
[42]Windley BF,Allen,MB,Zhang C,Zhao ZY,Wang G.R.1990.Paleozoic accretion and Cenozoic redeformation of the Chinese Tien Shan Range,central Asia.Geology 18:128～131.
[43]Seng r AMC,Natal in BA,and Burtman VS.1993.Evolution of the Altaid tectonic collage and Paleozoic crustal growth in Eurasia.Nature,364:209～304.
[44]Xiao WJ,Zhang LC,Qin KZ,et a1.Paleozoic accretionary and collisional tectonics of the Eastern Tianshan (China):Implications for the continental growth of central Asia[J].American Journal of Science,2004,304:370～395.
[45]马瑞士,舒良树,孙家齐.1997.东天山构造演化与成矿[M].地质出版社:l～202.
[46]陈陶成.1990.新疆哈密黄山-镜儿泉铜镍矿带成矿地质背景及矿例介绍.西北地质,11:20～25.
[47]阎文元.天山东段早石炭世岛弧型火山岩特征及其矿产[J].新疆地质,1985.3(2):49～58.
[48]王作勋,邬继易,吕喜朝,等. 1990.天山多旋回构造演化和成矿.北京,科学出版社.83～130.
[49]姬金生,陶洪样,曾章仁,等.东天山康古尔塔格金矿带地质与找矿[M].地质出版社,1994.
[50]肖序常.从扩张速率试论蛇绿岩的类型划分[J].岩石学报,1995,1l(增刊):10～23.
[51]白云来.新疆哈密黄山-镜儿山镍铜成矿系统的地质构造背景[J].甘肃地质学报,2000,9(2):1～7.
[52]Qin Kezhang,Zhang Lianchang,Xiao Wenjiao,Xu Xingwang,Yan Zhen,Mao Jingwen.2003.Overview of major Au,Cu,Ni and Fe deposits and metallogenic evolution of the eastern Tianshan Mountains,Northwest China.In:Mao Jingwen,et al.,eds.Tectonic Evolution and Metallogeny of the Chinese Altay and Tianshan.London:IAGOD Guidebook,Series 10,227～248.
[53]刘德权.新疆板块构造与矿产分布[J].西北地质,1983,4(2):l～l2.
[54]胡受奚,郭继春,顾连兴,等.加里东造山带在天山构造格架中的重要地位及其地质特征[A].新疆地质科学,第1辑[C].北京:地质出版社,1990,32～46.
[55]李月臣,赵国春,屈文俊,等.新疆香山铜镍硫化物矿床Re-Os同位素测定[J].岩石学报,2006,22(1):245～251.
[56]Mao JW,Pirajno F,Zhang ZH et al.,A review of the Cu-Ni sulphide deposits in the Chinese Tianshan and Altay orogens(Xinjiang Autonomous Region,NW China)Pirncipal characteristics and ore-forming processes[J].Journal of Asian Earth Sciences,2008,32:184-203.
[57]Zhang Zuoheng,Mao Jingwen,Du Andao,et al.Re-Os dating of two Cu-Ni sulfide deposits in northern Xinjiang,NW China and its geological significance[J].Journal of Asian Earth Sciences,2008,32:204～217.
[58]陈世平,王登红,屈文俊,等.新疆葫芦铜镍硫化物矿床的地质特征与成矿时代[J].新疆地质,2005,23(3):230～233.
[59]陈文,孙枢,张彦等.新疆东天山秋格明塔什-黄山韧性剪切带40Ar/39Ar年代学研究[J].地质学报.2005,79(6):790-804.
[60]毛景文,李晓峰,李厚民,等.中国造山带内生金属矿床类型、特点和成矿过程探讨[J].地质学报,2005,79(3):342-372.
[61]顾连兴,诸建林,郭继春,廖静娟,严正富,杨浩,王金珠.1994.造山带环境中的东疆型镁铁-超镁铁杂岩.岩石学报,lO(4):339～356.
[62]马瑞士,王赐银,叶尚夫.1993.东天山构造格架与地壳演化.地质出版社,1-225.
[63]Gu LX, Yang H, Yan ZF and Liao JJ.1996.Geology and genesis of peraluminous granites in East Tianshan Upper Paleozoic island are belt.Chinese Journal of Geochemistry(English edition),15(1):33-43.
[64]Li JY,Xiao WJ,Wang KZ,Sun GH and Gao LM.2003.Neoproterozoic-Paleozoic tectonstratigraphy,magmatic activities and tectonic evolution of Eastern Xinjiang,NW China.In:Mao,Goldfarb,Seltmann,Wang,Xiao and Hart(eds).Tectonic Evolution and Metallogeny of the Chinese Altay and Tianshan.Proceedings Volume of the International Symposium of the IGCP-473 Project in Urumuqi and Guidebook of the Field Excursion in Xinjiang,China:August 9-21,LAGOD Guiderbook Series 10:CERCAMS/NHMLondon,31-74.
[65]李锦轶,王克卓,孙桂华,莫申国,李文铅,杨天南,高立明.2006b.东天山吐哈盆地南缘古生代活动陆缘残片:中亚地区古亚洲洋板块俯冲的地质记录.岩石学报,22(5):1087-1102.
[66]Shu LS,Charvet J,Guo LZ,Lu HF and Laurent-Charvet S.1999.A large-scale Palaeozonic dextral ductile strike-slip zone:The Aqqikkudug-Weiya zone along the northern margin of the Central Tianshan belt,Xinjiang,NW China.Acta Geologica Sinica(English edition),73(2):148-162.
[67]Xu XW,Ma TL,Sun LQ and Cai XP.2003.Characterisstics and dynamic origin of the large-scale Jiaoluotage ductile compressional zone in the eastern Tianshan Mountain China.Journal of Structural Geology,25:1901-1915.
[68]王瑜,李锦轶,李文铅.2002.东天山造山带右行剪切变形及构造演化的40Ar/39Ar年代学证据.新疆地质,20:315-319.
[69]徐湘康,李新峰.1994.康古尔塔格韧性剪切带变质作用研究.新疆地质,12(3):259-264.
[70]王赐银,朱文斌,马瑞士.1992.东天山苦水变质地带变质作用特征及其成因研究.南京大学学报(自然科学版),28(4):595-604.
[71]唐俊华,顾连兴,张遵忠,吴昌志,三金柱,汪传胜,刘四海,张光辉.2007.东天山咸水泉片麻状花岗岩特征、年龄及成因.岩石学报,23(6):1803-1820.
[72]Grotenhuis SM,Trouw RAJ and Passchier CW.2003.Evolution of mica fish in mylonitic rocks.Tectonophysics,372:1-21.
[73]李少贞,仁燕,冯新昌,李嵩.2006.吐哈盆地南缘克孜尔塔格复式岩体中花岗闪长岩锆石SHRIMP U-Pb测年及岩体侵位时代讨论.地质通报,25(8):937-940.