再论内蒙古哈达门沟金矿床的成矿时限问题
Re-discussions on the time limitation of gold mineralization occurring within the Hadamenggou deposit, south-central Inner Mongolia autonomous region
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摘要: 对内蒙古哈达门沟金矿化区黑云母-磁铁矿伟晶岩脉中黑云母、含金钾化蚀变岩和金矿石中的绢云母样品进行了详细~(40)Ar~(39)Ar 同位素年龄测定。每件样品各个加热阶段所获数据均构成一条相关性很好的直线,它们对应的同位素等时线年龄值分别为1992.73±38.94Ma、322.58±3.24Ma 和239.76±3.04Ma。3件样品~(40)Ar/~(39)Ar 初始值分别为299.7、279.6和286.6,低于或接近尼尔值(295.5)。考虑到所测样品均采自来受到明显后期构造-岩浆活动或其它热事件影响的岩(矿)体, 因此,1992Ma、322Ma 和239Ma 分别代表了黑云母-磁铁矿伟晶岩脉、含金钾化蚀变岩和金矿石的形成时代。根据野外地质证据,并且结合上述同位素年龄数值,可以推测,哈达门沟地区金矿化发生的时间分别为海西中期和印支早期,其中印支早期是金矿康的主要成矿时期。
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关键词:
- ^40Ar／^39Ar同位素年龄 /
- 金矿床 /
- 成矿时限 /
- 哈达门沟 /
- 内蒙古
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[1] Bureau of Geology and Mineral Resources of Inner Mongolia.1991. Regional geology of Nei Mongol Autonomous Region.Geological Publishing House,Beijing,pp.630 -651 (in Chinese with English abstract)
[2] Chen,J.M.,Liu,G.,Li,C.C.et al.1996. Geology of greenstone-type gold deposits in the Wula-Daqing Mt.,Inner Mongolia.China Geological Publishing House,Beijing 165pp (in Chinese with English abstract)
[3] Davis,G.A.,Wang,C.,Zheng,Y.,et al.1998. The enigmatic Yinshan fold and thrust belt of northern China:new views on its intraplate contractional styles.Geology,26:43 -46
[4] Gan,S.F.,Qiu,Y.M.,Yang,H.Y.,et al.1994. The Hadamengou mine-a typical gold deposit in the Archean granulite facies terrane of the North China craton.Int.Geol.Rev.,36:850 -866
[5] Gold Headquarter of Chinese Armed Police Force.1995. Geology of theHadamengou pegmatitic gold deposit occurring in Inner Mongolia Autonomous Region.Beijing.Seismological Press,1-227 (in Chinese with English abstract)
[6] Guo,Y.T.1992. The minerogenetic geology of Hadamengou type gold deposits in Wulashan,Inner Mongolia.J.Precious Met.Geol.,1:191-195 (in Chinese with English abstract)
[7] Hu,B.Q.,Chang,Y.Z.,Zhang,W.C.1990. Characteristics of a large-scale nappe structure of the Yanshan-Yinshan mountain (Baotou district) and its relation to regional metallogeny of gold mineralization.J.Inner Mong.Geol.,1:1-7(in Chinese)
[8] Lang D.Y.1990. Geological features and ore-forming condition of Wulashan gold deposit,Inner Mongolia.Journal of Inner Mongolian Geology,(2):30-40 (in Chinese)
[9] Ludwig,K.R.1992. Isoplot V.2.57:A plotting and regression program for radiogenic-isotope data.U.S.Geological Survey Open-File Report 91 -445,rev.March 1992,40p
[10] Miao Laicheng,Qiu Yumin and Guang Kang et al.2000. SHRIMP chronological study of the granitoids and mineralization in the Hadamengou gold deposit,Inner Mongolia.Mineral Deposits,19(3):182 -190
[11] Nie Feng-Jun,Jiang Si-Hong,Su Xin-Xu and Wang Xin-Liang.2002. Geological features and origin of gold deposits occurring in the Baotou-Bayan Obo district,south-central Inner Mongolia,People\'s Republic of China.Ore Geology Review,20:139-169
[12] Nie Fengjun and Arne Bjψ rlykke.1994. Lead and sulfur isotopic studies of the Wulashan K-feldspar and quartz vein gold deposit,southwest Inner Mongolia,People\'s Republic of China.Economic Geology,89:1289-1305
[13] Nier,A.O.1950. A re-determination of the relative abundances of the isotope of carbon,nitrogen,oxygen,argon,and potassium.Phys.,77:789-793
[14] Wang,J.,Li,S.Q.,Wang,B.L.,et al.1992. The Langshan-Bayan Obo riff system.Beijing Univ.Publishing House,Beijing,pp.1-132 (in Chinese with English abstract)
[15] Wang Sonshan,Sang Haiqin,Hu Shiling andQiuji.1985.40Ar/39Ar age spectra on the amphibolite from the Zaozhuang Group,Qianan using 49-2 reactor,and its geological signifcance.Acta Petrologica Sinica,2(3):36 -42 (in Chinese)
[16] Xu Bei,Chen Bin.1997. The structure and evolution of Middle Paleozoic orogenic belt between the North China and Siberian Blocks,northern Inner Mongolia.Science in China (Series D),27(3):227 -232
[17] Zheng Yadong,Davis G A,Wang Zong,et al..1998. Major thrust sheet in the Daqing Shan Mountains,Inner Mongolia,China.Science in China (Series D),28(4):289 -295
[18] Zhang,H.T.,So,C.S.,Yun,S.T.1999. Regional geological setting and metallogenesis of central Inner Mongolia,China:guides for exploration of mesothermal gold deposits.Ore Geol.Rev.,14:129-146
[19] 陈纪明,刘纲,李才春,等.1996.内蒙古乌拉山-大青山绿岩型金矿床地质.北京:地质出版社,1-121
[20] 郭砚田.1992.内蒙古乌拉山"哈达门沟式"金矿床成矿地质特征.贵金属地质,1(2-3);191-195
[21] 胡宝全,常忠耀,张文聪.1990.阴山(包头段)大型推覆构造基本特征及其与金矿区域成矿关系.内蒙古地质,(1):1-7
[22] 郎殿有.1990.内蒙古乌拉山金矿地质特征及成矿地质条件.内蒙古地质,(2):30-40
[23] 苗来成,Yumin QIU,关康,等.2000.哈达门沟金矿床成岩成矿时代的定点定年研究.矿床地质,19(2):182-190
[24] 内蒙古自治区地质矿产局.1991.内蒙古区域地质志.中华人民共和国地质矿产部专报,(一)区域地质,第25号.北京:地质出版社1-725
[25] 聂凤军,裴荣富,吴良士,等.1994.内蒙古乌拉山石英-钾长石脉型金矿床铅和硫同位素研究.矿床地质,13(2):106-117
[26] 王楫,李双庆,王保良,等.1992.狼山-白云鄂博裂谷系.北京:北京大学版社.1-132
[27] 王松山,桑海清,胡世玲,等.1985.应用49-2反应堆进行40Ar/39Ar定年及迁安遭庄群斜长角闪岩年龄谱的地质意义.岩石学报,2(3):36-42
[28] 徐备,陈斌.1997.内蒙古北部华北板块与西伯利亚板块之间中生代造山带的结构及演化.中国科学(D辑),27(3):227-232
[29] 郑亚东,Davis,G.A.,王琮,等.1998.内蒙古大青山大型逆冲推覆构造.中国科学(D辑),28(4):289-295
[30] 中国人民武装警察部队黄金指挥部.1995.内蒙古哈达门沟伟晶岩金矿地质.北京:地震出版社,1-227
[31] 邹天人,徐珏,夏凤荣.1998.内蒙古自治区乌拉山金矿床的成因.矿床地质,17(增刊):373-376
[32] 聂凤军等,1995,内蒙古乌拉山石英-钾长石脉型金矿床钕,锶和铅同位素研究.原地质矿产部矿床地质研究所内部科研报告,1-56
[33] 刘纲,金宝义,武玉海,等.1997.乌拉山-冀北张家口地区与碱性岩(脉)有关金矿成矿条件及找矿方向研究.中国人民武装警察部队黄金地质研究所内部科研报告,1-65
[34] 张洪涛.1991.内蒙古包头-白云鄂博地区花岗质岩浆系列及金的成矿作用.中国地质科学院博士研究生论文,1-126
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