皖东地区燕山期高镁中酸性侵入岩地球化学特征及动力学意义

qiang · 发表于 2010-7-19 11:46

皖东地区燕山期高镁中酸性侵入岩地球化学特征及动力学意义

童劲松　路玉林　管运才　储东如　耿小光　

摘　要：皖东地区中酸性侵入岩为一套石英闪长岩-石英二长闪长岩-花岗闪长岩-二长花岗岩组合,主要属于高钾钙碱性岩系列,具有高Al2O3、Sr、Sr/Y、(La/Yb)N、富集LREE和LILE、亏损HREE和Y、Yb、Eu弱负异常-正异常、岩石高(87Sr/86Sr)i、低εNd(t)等特征.与中国东部多数埃达克质岩石相比,岩石具有较高的Mg#值和相容元素Cr、Ni含量.研究表明

1)皖东地区中酸性侵入岩可能是拆沉的下地壳基性物质经部分熔融作用及岩浆在上升过程中与地幔橄榄岩相互反应的产物,石榴石作为残留相存在.(2)燕山早期皖东地区存在受特提斯构造域挤压构造控制的地壳加厚过程,早白垩世受太平洋构造域影响的郯庐断裂带大规模左行平移活动是触发下地壳拆沉的主要因素.皖东地区中酸性侵入岩是两大构造体制域发生转换的岩浆岩石记录.
关键词：高镁中酸性侵入岩;拆沉作用;下地壳;燕山期;构造体制转换;皖东地区
分类号：P588.12 　文献标识码：A
文章编号：1000-3657(2008)01-0018-14

Geochemical characteristics of Yanshanian high-Mg intermediate-acid intrusive rocks in eastern Anhui and their dynamic significance

TONG Jin-song　 LU Yu-lin　 GUAN Yun-cai　 CHU Dong-ru　 GENG Xiao-guang　

基金项目：中国地质调查局地质大调查项目(200413000017)资助.
作者简介：童劲松,男,1968年生,博士生,高级工程师,从事区域地质调查和研究工作;E-mail:ahtjs@163.com.
作者单位：童劲松（中国地质大学地球科学与资源学院,北京,100083;安徽省地质调查院,安徽,合肥,230001）　
　　　　　路玉林（中国科学院地质与地球物理研究所,北京,100029）　
　　　　　管运才（安徽省地质调查院,安徽,合肥,230001）　
　　　　　储东如（安徽省地质调查院,安徽,合肥,230001）　
　　　　　耿小光（安徽省地质调查院,安徽,合肥,230001）　

参考文献：

[1]李学明,李彬贤,张巽,等.安徽管店岩体的同位素年龄和郯庐断裂的动力变质作用[J].中国科技大学学报,1985,15(增刊):254-261.Li Xueming,Li Binxian,Zhang Xun,et al.Geochronology of Guandian rock mass in Anhui province and dynamic metamorphism in Tancheng-Lujiang fracture zone[J].Journal of University of Science and Technology of China,1985,5(Supp.):254-261(in Chinese with English abstract).
[2]邢凤鸣,徐祥.安徽扬子岩浆岩带与成矿[M].合肥:安徽人民出版社,1999:1-170.Xin Fengming,Xu Xiang,Yangtze Magmatic Belt and Metallogenesis[M].Hefei:Anhui People's Publishing House,1999:1-170 (in Chinese).
[3]牛漫兰,朱光,刘国生,等.郯庐断裂带中-南段中生代岩浆活动的构造背景与深部过程[J].地质科学,2002,37(4):393-494.Niu Manlan,Zhu Guang,Liu Guosheng,et al.Tectonic setting and deep processes of Mesozoic magmatism in middle-South segment of the Tan-Lu fault[J].Chinese Journal of Geology,2002,37(4):393-494(in Chinese with English abstract).
[4]陈江峰,谢智,郑永飞,等.皖东侵入岩矿物Rb-Sr和Ar-Ar年代学及其与氧同位素平衡之间的关系[J].高校地质学报,2003,9(2):172-183.Chen Jiangfeng,Xie Zhi,Zheng Yongfei,el al.The relation between Rb-Sr,Ar-Ar geochronometers and oxygen isotopic equilibrium of intrusions from eastern Anhui Province,China[J].Geological Journal of China Universities,2003,9(2):172-183 (in Chinese with English abstract).
[5]王强,许继峰,赵振华,等.大别山燕山期亏损重稀土元素花岗岩类的成因及动力学意义[J].岩石学报,2001,17(4):551-564.Wang Qiang,Xu Jifeng,Zhao Zhenhua,et al.The petrogenesis and geodynamic significances of HREE depleted granitoids during Yanshan period in the Dabie Mountains[J].Acta Petrologica Sinica,2001,17(4):551-564(in Chinese with English abstract).
[6]王强,赵振华,熊小林,等.底侵玄武质下地壳的熔融:来自安徽沙溪adakite质富钠石英闪长玢岩的证据[J].地球化学,2001,30(4):353-362.Wang Qiang,Zhao Zhenhna,Xiong Xiaolin,et al.Melting of the underplated basaltic lower crust:Evidence from the Shaxi adakitic sodic quartz diorite-porphyrites,Anhui Province,China[J].Geochimica,2001,30(4):353-362(in Chinese with English abstract).
[7]许继峰,王强,徐义刚,等.宁镇地区中生代安基山中酸性侵入岩的地球化学:亏损重稀土和钇的岩浆产生的限制[J].岩石学报,2001,17(4):576-584.Xu Jifeng,Wang Qiang,Xu Yigang,et al.Geochemistry of Anjishan intermediate-acid intrusive rocks in Ningzhen area:constraint to origin of the magma with HREE and Y depletion[J].Acta Petrologica Sinica,2001,17(4):576-584(in Chinese with English abstract).
[8]潘国强,陆现彩,于航波.北淮阳中生代adakite岩石地球化学特征及成因讨论[J].岩石学报,2001,17(4):541-550.Pan Guoqang,Lu XianCai,Yu Hangbo.Petrological and geochemical characteristics of Mesozoic adakite from Northern Huaiyang and discussion on its genesis[J].Acta Petrologica Sinica,2001,17(4):541-550(in Chinese with English abstract).
[9]汪洋,邓晋福,姬广义.长江中下游地区早白垩世埃达克质岩的大地构造背景及其成矿意义[J].岩石学报,2004,20(2):297-314.Wang Yang,Deng Jinfu,Ji Guangyi.A perspective on the geotectonic setting of early Cretacenm adakite-like rocks in the Lower Reaches of Yangtze River and its significance for coppergold mineralization.[J].Acta Petrologica Sinica,2004,20 (2):297-314(in Chinese with English abstract).
[10]王元龙,王焰,张旗,等.铜陵地区中生代中酸性侵入岩的地球化学特征及其成矿-地球动力学意义[J].岩石学报,2004,20(2):326-338.Wang Yuanlong,Wang Yan,Zhang Qi,et al.The geochemical characteristics of Mesozoic intermediate-acid intrmives of the Tongling area and its metallogenesis-geodynamic implications[J].Acta Petrologica Sinica,2004,20(2):326-338 (in Chinese with English abstract).
[11]钱存超,路玉林,刘丽利.大别山超高压变质带燕山期花岗岩地球化学特征及成因探讨[J].中国地质,2004,31(2):147-154.Qian Cunchao,Lu Yulin,Liu Lili.Geochemical characteristics and genesis of Yanshanian granite in the Dabie ultrahigh-pressure(UHP)metamorphic belt[J].Geology in China,2004,31(2):147-154(in Chinese with English abstract).
[12]Peccerillo R,Taylor S R.Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area,Northem Turkey[J].Contributiom to Mineralogy and Petrology,1976,58(1):63-81.
[13]Rapp RP,Shimizu N,Norman MD,et al.Reaction between slab derived melts and peridotite in the mande wedge:Experimental constraints at 3.8GPa[J].Chemical Geology,1999,160:335-356.
[14]Defant M J,Drummond M S.Derivation of some modem arc magmas by melting of young subducted lithosphere[J].Nature,1990,347:662-665.
[15]Drummond M J,Defant M J.A model for trondhjemite-tonalite-dacite genesis and crustal growth via slab melting:Archean to modem comparisom.[J]Journal of Geophysical Research,1990,95(B13):21503-21521.
[16]路远发.Geokit:一个用VBA构建的地球化学工具软件包[J].地球化学,2004,33(5):459-464.Lu Yuanfa.Geokit-A geochemical toolkit for Microsoft Excel[J].Geochimica,2004,33 (5):459-464 (in Chinese with English abstract).
[17]肖庆辉,邓晋福,马大铨,等.花岗岩研究思维与方法[M].北京:地质出版社,2002:71-101.Xiao Qinhui,Deng Jinfu,Ma Daquan,et al.The Ways of Investigayion on Granitoids[M].Beijing:Geological Publishing House.2002:71-101(in Chinese with English abstract).
[18]邢风鸣.皖中下地壳重熔型花岗岩类[J].岩石矿物学杂志,1997,16(33):230-236.Xing Fengming.The anatectic granitoids of lower crust in Central Anhui[J].Acta Petrologica ct Mineralogica,1997,16(33):230-236(in Chinese with English abstract).
[19]Jahn B,Wu F,Lo C,et al.Crust-mantle interaction induced by deep subduction of the continetal crust:geochemical and Sr-Nd istotopic evidence from post-collision mafic-ultramafic intrusions of the northern Dabie complex,central China[J].Chemical Geology,1999,157:119-146.
[20]王强,赵振华,许继峰,等扬子地块东部燕山期埃达克质(adakite-like)岩与成矿[J].中国科学(辑),2002,32(增刊):(127-136).Wang Qiang,Zhao Zhenhua,Xu Jifeng,et al.Petrognesis and metallogenesis of the Yanshanian dakite-like rocks in the Eastern Yangtze Block[J].Science in China (Series D),2003,46(Supp.):(127-136)(in Chinese).
[21]涂荫玖,杨晓勇,郑永飞,等.皖东南黄片麻岩的锆石U-Pb年龄[J].岩石学报,2001,17(1):157-160.Tu Yinjiu,Yang Xiaoyong,Zheng Yongfei,et al.U-Pb dating of zircon from gneiss at Nanhuang in East Anhui[J].Acta Petrologica Sinica,2001,17(1):157-160(in Chinese with EngLish abstract).
[22]张旗,王焰,钱青,等.中国东部燕山期埃达克岩的特征及其构造-成矿意义[J].岩石学报,2001,17(2):236-244.Zhang Qi,Wang Yan,Qim Qingm,et al.The characteristics and tectonic-metallogenic significances of the adakites in Yanshan period from eastern China[J].Acta Petrologica Sinica,2001,17(2):236-244.
[23]张旗,王焰,王元龙.埃达克岩与构造环境[J].大地构造与成矿学,2003,(2):3-10.Zhang Qi,Wang Yan,Wang Yuanlong.On the rehtiomhip between adakite and its tectonic setting[J].Geotectonica Et Metallogenia[J].2003,(2):3-10(in Chinese with English abstract).
[24]张旗,李承东,王焰,等.中国东部中生代高Sr低Yb和低Sr高Yb型花岗岩:对比及其地质意义[J].岩石学报,2005,21(6):1527-1537.Zhang Qi,Li Cendong Wang Yan,et al.Mesozoic high-Sr and Low-Yb granitoids and low-Sr and high-Yb granitoids in eastern China:comparison and geological implicatiom[J].Acta Petrologica Sinica,2005,21(6):1527-1537(in Chinese with English abstract).
[25]Castillo P R,Janney P E,Solidum R U.Petrology and geochemistry of Camiguin island,southern Philippines:Insights to the source of adakites and other hvas in a complex arc setting[J].Contributions to Mineralogy and Petrology,1999,134:33-51.
[26]Atherton M P,Peiford N.Generation of sedium-rich magmas from newly underpated basaltic crust[J].Nature,1993,362:144-146.
[27]Peacock S M,Rushmer T,Thompson A B.Partial melting of subducting oceanic crust[J].Earth and Planetary Science Letters,1994,121:227-144.
[28]Gao S,Rundick R L,Yuan H L,et al.Recycing lower continental crust in the North China craton[J].Nature,2004,432:892-897.
[29]Xu Jifeng,Shinto R,Defaat M J,et al.ongin of Mesozoic adakitic intrusive rocks in the Ningzhen arca of east China

artial melting of dehminated lower continental crust[J].Geology,2002,30:1111-1114.
[30]Kay R W,Kay S M.Andean adakites:three ways to make them.[J].Acta Petro.Sinica,2002,18:303-311.
[31]Rapp R P.Heterogenom source regiom for Archean granitoids[C]//Wit M J,Ashal L D(ed.).Greenstone Belt.Oxford:Oxford University Press,1997:35-37.
[32]Rapp R P and Watson E B.Dehydration melting of metabasalt at 8-32 kbar:implications for continental growth and crust-mantle recycling[J].Journal of Petrology,1995,36:891-931.
[33]Rapp R P,Watson E B,Miller C F.Partial melting of amphiboliite /eclogite and the origin of Archean trondhjemites and tonalities[J].Precambrian Research.1991,51:1-25.
[34]Rapp R P,Xiao L,Shimizu N.Experimental Comtraints on the origin of Potassium-rich Adakites in Eastern China[J].Acta Petrological Sinica,2002,18(3):293-302.
[35]Winther K T,Newton R C.Experimental melting of hydrous low-K tholeiite:evidence on the origin of Archaean cratons[J].Bull Geological Society of Denmark,1991,39:213-228.
[36]张旗,金惟俊,王元龙,等.大陆下地壳拆沉模式初探[J].岩石学报,2006,22(2):265-276.Zhang Qi,Jin Weijun,Wang YuanLong,ct al.A model of delamimtion of continental lower crust[J].Acta Petrologica Sinica,2006,22(2):265-276(in Chinese with English abstract).
[37]荆延仁,梁万通,张树业,等.张八岭蓝片岩带基本特征[C]//中国变质地质图编制与研究论文集(第二辑).北京:地质出版社,1988:238-245.Jing Yanren,Liang Wantong.Zhang Shuye,et al.Basic feature of blue schist in Zhangbaling[C]//Contributions to the Compilation and tkesearch of Metamorphic Geological Maps(2).Bdjing:Geological Publishing House,1988:238-245(in chinese with English abstract).
[38]荆延仁,汤加富,高天山,等.安徽张八岭蓝片岩带的矿物分带[J].中国区域地质,1996,59(4):289-294.Jing Yanren,Tang Jiafu,Gao Thnshan,et al.Mineral zoning of the zhangbaling blueschist belt in Anhui province[J].Regional Geology of China,1996,59(4):289-294(in Chinese with English abstract).
[39]朱光,王勇生,牛漫兰,等.郯庐断裂带的同造山运动[J].地学前缘,2004,11(3):169-182.Zhu Guang,Wang Yongsheng;Nin Manlan;et al.Synorogenic movement of the Tan-Lu fault gone[J].Earth Science Fronticrs,2004,11(3):169-182(in Chinese with Engtish abstract).
[40]朱光,王勇生,王道轩,等.前陆沉积与变形对郯庐断裂带同造山运动的制约[J].地质科学,2006,41(1):102-121.Zhu Guang,Wang Yongsheng,Wang Daoxuan,et al.Constraints of foreland sedimentation and deformation on syaorngenic ofthe Tan-Lu fault zone[J].Chinese Journal of Geology,2006,41(1):102-121(in Chinese with English abstract).
[41]侯明金,吴跃东,汤加富.大别造山带中上地壳变形特征--皖中张八岭地区印支-燕山早期构造变形研究[J].中国地质.2004,31(2):123-131.Hou Mingjin,Wu Yuedong,Tang jiafu,Deformation features of themid-upper crust of the Dabie orogenic belt-a case study of the Indosinian-early Yanshanian tectonic deformation in the Zhangbaling area[J].Geology in China,2004,31(2):123-131(in Chinese with English abstract).
[42]Zhou X M,Li W X.origin of Late Mesozoic igneous rocks in Southeastern China:implications for lithosphere subduction and underphtingofmaficmagmas[J].Tectonophysics2000,326:269-28Z
[43]戴圣潜,邓晋福,吴宗絮,等.大别造山带燕山期造山作用的岩浆岩石学证据[J].中国地质,2003,30(2):159-165.Dai Shengqian,Deng Jinfu,Wu Zongxu,et al.Evidence of magmatic petrology for the Yanshaman orogeny in the Dabie orogen[J].Geology in China,2003,30(2):159-165(in Chinese with English abstract).
[44]吕庆田,侯增谦,杨竹森,等.长江中下游地区的底侵作用及动力学演化模式:来自地球物理资料的约束[J].中国科学(D辑),2004,34(9):783-794.Lu Qingtian,Hou Zengqian,Yang Zhusen,eg al.Manna underphting and geodynamic model in the middle and lower Yangtze River:evidence from geophysics[J].Science in China(D),2004,34(9):783-794(in Chinese).
[45]黄小龙,徐义刚,王汝成,等.安徽女山麻粒岩包体:矿物学特征、下地壳地温曲线及其成因意义[J].岩石学报,2002,180):383-391.Huang Xiaolong.Xu Yigang,Wang Rucheng,et al.The Nushan granulite xenoliths from Anhui Province,China:mineralogical characteristics,the lower crustal geotherm and their implicatiom for genesis[J].Acra Petrologica Sinica,2002,18 (3):383-391 (in Chinese with English abstract).
[46]朱光,王道轩,刘国生,等.郯庐断裂带的演化及其对西太平洋板块运动的响应[J].地质科学,2004,39(1):36-49.Zhu Guang,Wang Daoxuan,Liu Guosheng,et al.Evolution of the Tan-Lu fault Zone and its responses to phte movements in west pacific basin[J].Chinese Journal of Geology,2004,39(1):36-49(in Chinese with English abstract).
[47]侯明金,王永敏,Jacques Mercier,et al.郯庐断裂带(安徽部分)动力学演化及其构造意义[J].地质通报,2003,22(2):105-112.Hou Mingjin,Wang Yongmin,Jacques M,et al.Dynamic evolution and tectonic significance of the Tanlu fault zone(Anhui segment)[J].Geological Bulletin of China,2003,22(2):105-112(in Chinese with English abstract).
[48]朱光,宋传中,王道轩,等.郯庐断裂带走滑时代的40Ar/29Ar年代学研究及其构造意义[J].中国科学(D辑),2001,31(3):250-256.Zhu Guang,Song Chuanzong,Wang Daoxuan,et al.Studies on 40Ar/29Arthermochronology of strike-slip time of the Tan-Lu fault zone and tIleir tectonic implications[J].Science in China(Series D),2001,31(3):250-256(in Chinese).
[49]徐义刚.岩石圈的热-机械侵蚀和化学侵蚀与岩石圈减薄[J].矿物岩石地球化学通报,1999,18(1):1-5.Xu Yigang.Roles of thermo-mechanic and chemical erosion in continental lithospheric thinning[J].Bulletin of Mineralogy,Petrology and Geochemistry,1999,18 (1):1-5 (in Chinese with English abstract).
[50]路凤香,郑建平,邵济安,等.华北东部中生代晚期-新生代软流圈上涌与岩石圈减薄[J].地学前缘,2006,13(2):86～92.Lu Fengxiang,Zheng Jianping,Shao Jian,et al.Asthenospheric upweUing and lithospheric thinning in hte Cretaceous-Cenozoic in emtem Noah China[J].Earth Science Frontiers,2006,13(2):86-92(in Chinese with English abstract).
[51]王谦生.中国东南浙皖地区的区域重磁场特征与地壳构造的研究[C]//李继亮主编,中国东南海陆岩石圈结构与演化研究,北京:中国科学技术出版社,1992:287-294.Wang Qiansheng.Research on characteristics of regional gravity field and geomagnetic field and crustal structure in ZheWan area of Southeast China[C]//Li Jiliang(ed.),Investigation on the Structure and Evolution of Oceanic and Continental Lithosphere in Southeast China.Beijing:Chinese Science and Technology Press,1992:287-294(in Chinese).
[52]陈沪生,张永鸿.下扬子及邻区岩石圈结构构造特征与油气资源评价[M].北京:地质出版社,1999:1-286.Cheng Husheng,Zhang Yonghong.The Lithospheric Textural and Structural Features as Well as Oil and Gas Evaluation in dle Lower Yangtze Area and Its Adjacent Region,China[M].Beijing:Geological Publishing House.1999:1-286(in Chinese).
[53]孙武城,徐杰,扬主恩,等.上海奉贤至内蒙古阿拉善左旗地学断面[M].北京:地震出版社,1992.Sun Wucheng,Xu Jie,Yang Zhuen.et al.Geoscience trabsect of Fengxian,Shanghai to Alashanzuoqi,Inner Mongolia[M].Beijing:Seismological Press,1992.