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内蒙古阿巴嘎旗北部地质特征及岩浆岩研究
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摘要
内蒙古阿巴嘎旗北部位于二连-贺根山板块对接带的西北侧,在晚古生代处于西伯利亚板块东南大陆边缘增生带,在中生代则处于滨太平洋构造域之大兴安岭中生界火山-岩浆岩带的西部边缘。本文在对阿巴嘎旗北部必鲁特一带进行1:50000区域地质填图和1:5000实测地质剖面的基础上,对各类样品进行了采集分析,对该区地层、侵入岩和火山岩进行了较深入的研究。
     通过1:5万填图查明:本区地层出露比较齐全,由老到新有奥陶系、泥盆系、石炭-二叠系、侏罗系、古近系和新近系。岩浆活动主要发生在石炭纪-二叠纪、侏罗纪、更新世3个时期。火山岩分布广泛,侵入岩较为发育。总体构造线为北东东向,构造以断裂为主,褶皱为次。
     区内侵入岩可根据岩性特征、化学成分划分为三类:正长花岗岩、碱长花岗岩和花岗斑岩。三者均为独立岩体。其中正长花岗岩的成岩时代为早二叠世,后两者为晚侏罗世。通过对三类侵入岩体样品主微量元素地球化学特征的分析,表明正长花岗岩体、碱长花岗岩体都具有A型花岗岩的特征,花岗斑岩体兼具A型和S型花岗岩的特征。这三类侵入岩体均产于后造山构造环境,岩浆来源与陆壳变杂砂岩部分熔融有关。
     对区内宝力高庙组二段(C2P1bl2)与白音高老组(J3b)的火山岩岩石类型开展了研究,并结合火山岩地层剖面进行了分析,总结了本区在晚石炭世-早二叠世、晚侏罗世两个时期的火山喷发旋回特征。C2P1bl2火山岩相以爆发相为主,喷溢相较少,存在喷发间歇;依据火山岩相可划分为五个喷发韵律,每一韵律由下向上均从溢流相变为喷发相;火山作用从早到晚爆发指数逐渐增高,岩浆成分呈现从中基性向中酸性的转变。J3b火山岩相也以爆发相为主,喷溢相较少,但未见喷发间歇;依据火山岩相也可划分出五个喷发韵律,在每一韵律底部岩浆成分常为英安质或安山质,向上为流纹质:总体上J3b反映了喷溢-爆发相、爆发相相间的周期,具有由弱到强的反韵律特征。通过对C2P1bl2与J3b火山熔岩岩石地球化学特征的分析,表明二者成岩构造环境都为造山带环境。
     综合区内各期次侵入岩、火山岩特征以及所反映的构造环境,对区内岩浆活动进行了总结,并以此与本区地史进行对照,阐述了构造演化史。本区在古生代有两套海槽沉积,分别是中晚奥陶世的陆源碎屑沉积和泥盆纪夹有火山碎屑的陆源碎屑沉积。石炭纪-二叠纪,古亚洲洋闭合以及华力西构造带形成,造成该时期一系列的岩浆活动,先后形成宝力高庙组沉积-火山岩地层与正长花岗岩侵入体。晚侏罗世,由于太平洋板块发生俯冲作用,在拉张环境下发生频繁岩浆活动,形成白音高老组火山岩与钠闪碱长花岗岩侵入体。
The northern Abaga Banner of Inner Mongolia is located in the northwest of the plate suture zone from Erlian to Hegenshan. In the Late Paleozoic, this region was in an accretion zone, which is a part of the southeast continental margin of the Siberian plate. In the Mesozoic, this region was located at west margin of the magmatic rock band of the Greater Khingan Mountains, which is a part of the Pacific Rim tectonic zone. The strata, intrusive rocks and volcanic rocks in the area are detailedly studied in this paper according to the regionally geological mapping of1:50000and measured geological section of1:5000, as well as the analyses of samples.
     The stratigraphical units in this region are well emerged based on the regional geological mapping of1:50000. These strata are the Ordovician, the Devonian, the Carboniferous-Permian, the Jurassic, the Paleogene and the Neogene from old to new. The magmatic activities were mainly occurred in three periods, i.e. the Carboniferous-Permian, the Jurassic and the Pleistocene. Volcanic rocks are widely distributed and intrusive rocks are quite developed. The overall direction of structure line in this region is north-east-east. Faults are main geological structures, and folds are next.
     According to the lithologic features and chemical composition, the intrusive rocks of northern Abaga Banner can be recognized to three types, i.e. syenite granite, alkali feldspar granite and granite porphyry. All of them are separate intrusive bodies. The diagenesis age of syenite granite is the Early Permian, while both of latter are the Late Jurassic. Furthermore, by analyzing contents of major elements and trace elements, syenite granite and alkali feldspar granite are characterized by A-type granite, while the granite porphyry is characterized by both A-and S-type granites. All of them were formed under the post-orogenic tectonic environment. The magmatic origin of these intrusive bodies is considered to be related with the partial melting of the continental crust metagreywacke.
     In this paper, the volcanic rock types of the second member of the Baoligaomiao Formation (C7P1bl2) and the Baiyingaolao Formation (J3b) were studied, and stratigraphic profiles also were analysed. Moreover, the volcanic eruption cycle features were discovered during the Late Carboniferous-Early Permian and the Late Jurassic in this region. Volcanic lithofacies of C2P\bl2are mainly eruptive facies, secondarily effusive facies, and occasionally with some eruption discontinue. Based on volcanic lithofacies, five eruption rhythms can be recognized. From the lower part to upper part, every eruption rhythm is with a change which is from effusive facies to eruptive facies. These rocks are along with a gradual rising of the burst index, and a transforming of the composition of magma, i.e., basic to acidic. Volcanic lithofacies of J3b also are mainly eruptive facies and secondarily effusive facies, without discontinue. J3b also has five eruption rhythms according to the lithofacies. The composition of magma at the bottom of every eruption rhythm generally is dacitic or andesitic, and rhyolitic upwardly. As a whole, J3b reflects effusive-burst facies and burst facies cycle, and is with the abnormal rhythms, i.e. weak to strong. Besides, analyses of geochemical characteristics suggest that both C2P1bl2and J3b were formed under the orogenic tectonic environment.
     The magmatic activities in this region were summarized based on the geologic features of intrusive rocks, volcanic rocks and geological tectonics. Furthermore, the tectonic evolution history in this region was explained on the basis of the combination of the geologic history of adjacent areas. In the Paleozoic, there were two ocean trough deposits in this region. One was formed by terrigenous detrital minerals during the Middle-Late Ordovician, and the other was formed by terrigenous material with a little tephra during the Devonian. During the Carboniferous-Permian, the closing of the Paleo-Asian Ocean and the building of tectonic zone of Variscan caused a series of magmatic events, and the Baoligaomiao Formation and the syenogranite intrusive body were come forth. In the Late Jurassic, frequent magmatic activities occurred in the stretch zones due to the subducation of the Pacific Plate, and the formation of J3b volcanic rocks and alkali feldspar granite were formed.
引文
1. 白宪洲,贾小川,杨学俊,等.滇西龙陵瑞丽断裂带早白垩世火山岩LA-ICP-MS锆石U-Pb定年和地球化学特征.地质通报,2012,31(2-3).
    2. 陈德潜,陈刚.实用稀土地球化学[M].北京:冶金工业出版社,1990:226-242
    3. 陈建林,郭原生,付善明.花岗岩研究进展-ISMA花岗岩类分类综述[J].甘肃地质学报,2004,13(1):67-72.
    4. 陈毓川.中国主要成矿区带矿产资源远景评价.北京:地质出版社,1986.
    5. 陈志广,张连昌,周新华,等.满洲里新右旗火山岩剖面年代学和地球化学特征[J].岩石学报,2006,22(12):2971-2986.
    6. 崔玲玲,陈柏林,杨农,陈正乐,丁文君.阿尔金山东段喀腊大湾中基性火山岩岩石地球化学特征及成因探讨.地质力学学报,2010,16(1):96-107.
    7. 《地球科学大辞典》编委会.地球科学大辞典:基础科学卷[M].北京:地质出版社,2006.
    8. 苟军,孙德有,赵忠华,等.满洲里南部白音高老组流纹岩锆石U-Pb定年及岩石成因[J].岩石学报,2010,26(1):334-335.
    9. 弓贵斌,王全旗.内蒙古自治区阿巴嘎旗地区上石炭统至下二叠统宝力高庙组火山岩特征与环境研究[J].西部资源,2011,2:69-73.
    10.国家自然基金委员会.地球化学[M].北京:地质出版社,1996:1-259.
    11.郭胜哲.中朝板块与西伯利亚板块拼合时限的确定及其生物地层学依据[J].沈阳地质矿产研究所所刊,1986,(14):127-136.
    12.韩吟文,马振东,等.地球化学[M].北京:地质出版社,2003.
    13.韩振哲,王洪杰,李中会等.内蒙古东北部阿龙山地区早白垩世A型花岗岩特征及其意义[J].华南地质与矿产,2009,(4):1-9.
    14.洪大卫,黄怀曾,肖宜君等.内蒙古中部二叠纪碱性花岗岩及其动力学意义[J].地质学报,1994,68(3):219-230.
    15.洪大卫,王涛,童英.中国花岗岩概述[J].地质论评(增刊),53,2007:9-14.
    16.黄玉龙,王璞珺,等.松辽盆地营城组火山岩旋回和期次划分一以盆缘剖面和盆内钻井为例[J].吉林大学学报(地球科学版),2007,37(6):1184-1190.
    17.黄行凯,莫宣学,喻学惠,李勇,和文言,李小伟.云南马关新生代钾玄质玄武岩的岩石学与地球化学特征及构造环境.中国地质大学学报,2012,37(3).
    18.贾小辉,王强,唐功建.A型花岗岩的研究进展及意义[J].大地构造与成矿学,2009,33(3):465-480.
    19.李建兵.新疆西南大山晚古生代沉积盆地及大地构造演化[J].成都理工大学,2010.
    20.李俊建,刘晓阳,张连营,等.内蒙古二连-东乌旗地区成矿规律和找矿方向[G].中国地质调查局大津地质矿产研究所:“十五”地质行业重大找矿成果资料汇编,2008.
    21.李莉,白云山,马丽艳,牛志军,段其发.羌塘东部治多县直根尕卡一带二叠纪栖霞期火山岩地球化学特征及其构造意义.中国地质,2009,36(6).
    22.李佩贤,柳永清,田树刚.冀北滦平盆地侏罗系—白垩系岩石地层研究新进展.地质通报,2004.23(8):757-765.
    23.刘静.新疆特克斯达坂一带大哈拉军山组火山岩及其构造环境[J].长安大学,2007.
    24.刘玉成,陶德益,向丽萍,龚湘湖.内蒙古锡林郭勒盟必鲁特等五幅1:5万区域矿产地质调查总体工作设计[J].2010.
    25.路凤香,桑隆康,等.岩石学[M].北京:地质出版社,2002.
    26.柳永清,等.冀北滦平陆相侏罗-白垩系生物地层界线及候选层型研究进展[J].地质通报,2002,21(3):176-180.
    27.柳永清,庞其清,李佩贤,等.冀北滦平陆相侏罗-白垩系生物地层界线及候选层型研究进展[J].地质通报,2002,21(3):176-180.
    28.罗照华,邓晋福,罗飞,李玉文,曹永清.内蒙古中部深成侵人岩谱系单位及构造岩浆活动初探.现代地质[J],1995,9(2):189-202.
    29.聂凤军,江思宏,张义,刘妍,胡朋.中蒙边境及邻区斑岩型铜矿床地质特征及成因[J].矿床地质,2004,23(2):176-189.
    30.内蒙古自治区地矿局区域地质测量队.1:20万乌力吉特敖包、白音图嘎幅地质调查报告.1979.
    31.内蒙古自治区地矿局区域地质测量队.1:20万白音吉日嘎啦大队、白音乌拉幅地质调查报告.1980.
    32.内蒙古自治区地质调查院.1:25万吉尔嘎郎图苏木、阿巴嘎旗幅地质调查报告.2007.
    33.内蒙占自治区地质调查院.1:25万巴音申图、巴音乌拉幅地质调查报告.2007.
    34.内蒙古自治区地质调查院.内蒙古苏尼特左旗达来庙地区1:5万区域矿产地质调查报告.2007.
    35.内蒙古自治区地质矿产局.内蒙古自治区区域地质志[M].北京:中国地质大学出版社,1991.
    36.内蒙古自治区地质矿产局.内蒙古自治区岩石地层[M].武汉:中国地质大学出版社,1996.
    37.寗奇生,唐克东.大兴安岭区域地质及其成矿远景[J].地质月刊,1959,(8):37-43.
    38.邱瑞龙.九华山花岗岩岩浆分异特征及岩石成因[J].岩石矿物学杂志,1998.17(4):308-315.
    39.邵积东,王守光,赵文涛,赵满寿,王新亮,张梅.内蒙古中部地区重要成矿区带成矿地质特征及找矿潜力分析[C/G].西部资源理论研讨,2008:59-61.
    40.邵积东,谭强,王惠,等.大兴安岭地区中生代地层特征及侏罗-白垩纪界限的讨论[J].地质与资源,2011,20(1):4-11.
    41.施光海,苗来成,张福勤,等.内蒙古锡林浩特A型花岗岩的时代及区域构造意义[J].科学通报,2004,49(4):384-389.
    42.石玉若,刘敦一,张旗,简平,张福勤,苗来成,张履桥.内蒙占中部苏尼特左旗地区三叠纪A型花岗岩锆石SHRIMP U-Pb年龄及其区域构造意义[J].地质通报,2007,26(2):183-]89.
    43.谭绿贵,周涛发,袁峰,范裕,岳书仓.新疆萨吾尔地区二叠纪火山岩地球动力学背景.合肥工业大学学报(白然科学版),2006,29(7):868-874.
    44.陶继雄,王弢,陈郑辉,罗忠泽,许立权,郝先义,崔来旺.内蒙古苏尼特左旗乌兰德勒钼铜多金属矿床辉钼矿铼-饿同位素定年及其地质特征.岩矿测试[J],2009,28(3):249-253.
    45.陶继雄,钟仁,赵月明,郑宝军.内蒙古苏尼特左旗乌兰德勒钼(铜)矿床地质特征及找矿标志[J].地球学报,2010,31(3):413-422.
    46.涂光炽等.地球化学[M].上海:上海科学技术出版社,1984:226-227.
    47.王晓伟,杨春霞,刘景显,等.西准噶尔A型花岗岩地球化学特征及构造意义[J].甘肃地质,2011,20(2):12-18.
    48.王守光,黄占起,苏新旭,沈存利,胡凤翔.一条值得重视的跨国境成矿带——南戈壁—东乌旗铜多金属成矿带[J].地学前缘,2004,11(1):249-252.
    49.吴利仁,张秀棋.论辽宁锦西杨家杖子杂岩体的岩浆成因演化及成矿作用.岩石学报,1990(3).
    50.吴锁平,王梅英,戚开静.A型花岗岩研究现状及其述评[J].岩石矿物学杂志,2007,26(1):59-61.
    51.徐宏节.松辽盆地南部断陷层火山岩储层识别及评价研究[J].成都理工大学,2010.
    52.徐备,陈斌.内蒙古北部华北板块与西伯利亚板块之间中古生代造山带的结构及演化关系[J].中国科学(D辑),1997,27(3):227-232.
    53.杨学俊,贾小川,熊昌利,白宪洲,黄柏鑫,罗改,杨朝碧.滇西高黎贡山南段公养河群变质基性火山岩LA-ICP-MS锆石U—-Pb年龄及其地质意义.地质通报,2012,31(2-3).
    54.杨永胜,孙柏年,康鸿杰等.内蒙古苏尼特左旗北达布锡勒岩体主微量元素地球化学特征及成因探讨.中国地质,2011,38(2):304-310.
    55.袁峰,周涛发,范裕,陆三明,钱存超,张乐骏,段超,唐敏慧.庐枞盆地中生代火山岩的起源、演化及形成背景.岩石学报,2008,24(8):1691-1702.
    56.张海.个旧卡房铜锡矿床地质特征及火山岩相研究[J].中国地质大学(北京),2010.
    57.张旗,王焰,潘国强,等.花岗岩源岩问题—关于花岗岩研究的思考之四[J].岩石学报,2008,24(6):1193-1204.
    58.张玉清.内蒙古苏尼特左旗巴音乌拉二叠纪埃达克质花岗闪长岩类地球化学特征及其地质意义.岩石矿物学杂志[J],2009,28(4):329-338.
    59.张振强.额尔古纳-满洲里地区中生代火山岩与铀成矿地质条件研究[J].辽宁地质,2000,17(4):263-266.
    60.赵国龙,杨桂林,傅嘉友,等.大兴安岭中南部中生代火山岩[M].北京:北京科学技术出版社,1989.
    61.赵伦山,张本仁,等.地球化学[M].北京:地质出版社,1988:138-165.
    62.赵振华.关于岩石微量元素构造环境判别图解使用的有关问题[J].大地构造与成矿学,2007,31(1):92-103.
    63.赵振华,微量元素地球化学原理[M].北京:地质出版社,1997:1-238.
    64.中国地质调查局.二连-东乌珠穆沁旗地区1:50000航空物探综合站勘查报告[M].2007.
    65.钟仁.内蒙古阿巴嘎旗地区区域地球化学特征及成矿远景区划分[J].中国地质大学(北京).2006.
    66.钟龙.新疆阿尔泰青河北伟晶岩年代学及成因研究[J].北京大学.2011.
    67.张义,聂凤军,江思宏.中蒙边境欧玉陶勒盖大型铜、金矿床的发现及对找矿勘查工作的启示[J].地质通报,2003,22(9):708-712.
    68.祝洪臣,王海坡,张炯飞.内蒙古苏尼特左旗两种不同成因类型金矿.吉林大学学报(地球科学版)[J],2006,36(5):759-766.
    69. Altherr R, Holl A, Hegner E, et al. High-potassium, calc-alkaline I-type plutonism in the European Variscides; northern Vosges (France) and northern Schwarzwald (Germany)[J]. Lithos,2000,50:51-73.
    70. Collins W J et al. Nature and origin of A type granites with paticular reference to Southeastern Australia [J]. Contrib. Miner. Petro,1982,80:189-200.
    71. Defant MJ and Drummond MS.1990. Derivation of some modern arc magm asby melting of young subduction lithosphere[J]. Nature,47:662-665.
    72. Defant MJandDrummond MS.1993. Mount St Helens: potential example of thepartialmeltingof the subduct edlithosphereinavolcanicarc[J]. Geology,21:547-550.
    73. Drummond MS and Defant MJ.1990. Amodel for trongh jemite Tonalite dacite genesis and crustal growth viaslab melting:Archean to Modern comparisons[J]. J. Geophys. Res. 95(B13):503-521.
    74. Eby G N. Chemical subdivision of the A-type granitoids:petrogenetic and tectonic implications. Geology [J],1992,20:641-644.
    75. Eby G N. the A-type granitoids:A review of their occurrence and chemical charactrestics and speculations on their petrogenesis lithos[J].1990,26:115-134.
    76. Elliott T, Plank T, Zindler A, et al. Element transport from slab to volcanic front at the Mariana arc. Journal of Geophysical Research,1997,102:14991-15019.
    77. Harris N B W, Pearce J A, Tindla A G. Geochemical characteristics of collision-zone magmafism[C]. Coward M P, Reis A C(eds). Collision tectonics. Geol Soc Spec Publ, 1986,19:67-81.
    78. Jackson J A. Glossary of geology.4th ed[M]. Alexan-dria:American Geological Institute, 1997.
    79. Kay RW and Kay SM.1993. Delamination and delamination magmatism[J]. Tectonophysics, 19:177-189.
    80. Kay SM, Ramos VA and Marquez M.1993. Evidencein Cerro Pampa volcanic rocks for slab melting prior toridge trench collisionin southern South America[J]. Journal of Geology,101: 703-714.
    81. King P L, Whale A J R, Chappell B W, et al., Characterization and origin of aluminous A-type granites from Lachlan Fold Belt, Southeastern Australia [J]. Journal of Petrology, 1997,38(3):371-391.
    82. Le Maitre R W(ed). A Classification of Igneous Rocks and Glossary of Terms. Blackwell, Oxford,1989:193.
    83. Le Maitre R. W, et. al. A Classification of igneous rocks and glossary of terms, recommendations of the IUGS subcommission on the systematics of igneous Rocks, Blackwell, Scientific Publication, Trowbridge, Wilts.1989.
    84. Le Maitre R W. Some problems of the projection of chemical data in mineralogical classifications[J]. Contrib. Mineral. Petrol,1976,56:181-189(in Chinese with English abstract).
    85. Lindgren W. Mineral deposits. New York:McGraw-Hill,4th ed.,1933:930.
    86. Maniar P D, Piccoli P M. Tectonic discrimination of granitoids [J]. Geological Society of America Buletin,1989,101:635-643.
    87. Pearce J A. Source and settings of granitic rocks[J]. Episodes,1996,19:120-125.
    88. Rittman. stable mineral assemblages of igneous rocks[M].1973.
    89. Robinson P T, Zhou M F, Hu X F, et al. Geochemical constraints on the origin of the Hegenshan Ophiolite, Inner Mongolia, China[J]. Journal of Asian Earth Sciences,1999, 17:423-442.
    90. Robet PR, XiaoLong and Nobu S.2002. Experimental constrainson the Origin of potassium rach adakites in eastern China [J]. Acta PetrologicaSinica,18(3):293-302.
    91. Robert WK and Suzanne MK.2002. Andean adakites:there ways to make them[J]. Acta PetrologicaSinica,18(3):303-310.
    92. Sylvester P J, Post-collisional alkaline granites [J]. Journal of Geology,1989,97:261-280.
    93. Sun SS, McDonough WF. Chemical and isotopic systematics of oceanic basalts:implications for mantle composition and processes. In:Saunders, A. D., eds., Magmatism in the ocean basins. Geol Soc London Spec Pub,1989,42:313-345.
    94. Tang K D. Tectonic development of Paleozoic foldbelts at the north margin of the Sino-Korean craton[J]. Tectonic.1990,9:249-260.
    95. Taylor SR, McLennan SM. The continental crust:Its composition and evolution. Oxford: Black-Well,1985,1312.
    96. Taylor S R. The continental crust:its composition and evolution[J]. London:Blackwell, 1985,57-72.
    97. Whalen J B, Currie K L, Chappell B W. A-Type granites:Geochemical characteristics discrimination and petrogenesis [J]. Contribution to Mineralogy and Petrology,1987,95: 407-419.
    98. Wu F Y, Sun D Y, Li H M, et al., A-type granites in northeastern China:Age and geochemical constraints on their petrogenesis [J]. Chemical Geology,2002,187:143-173.

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