黑龙江省张广才岭南部早侏罗世花岗岩暗色微粒包体成因研究
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摘要
黑龙江省张广才岭南部早侏罗世花岗岩具有明显的岩浆混合特征。岩体中暗色微粒包体发育,主要为细粒闪长质岩浆包体,包体形态多样,与寄主岩呈截然、过渡关系。包体的矿物组合明显不平衡,如矿物具有定向排列的特点,斜长石发育自形环带并存在新、老两个世代,发育针状磷灰石。由电子探针对斜长石、角闪石和黑云母等矿物分析结果可知,寄主花岗岩和包体中各主要矿物含量基本一致。岩石地球化学特征研究显示,包体与寄主花岗岩关系密切,两者在稀土元素和微量元素方面也表现为明显的地球化学亲缘关系。这表明张广才岭南部早侏罗世花岗质岩石具有壳幔混合成因特征,暗色微粒包体是由较基性的地幔岩浆进入寄主岩浆中淬火结晶而成,花岗质岩浆的源区主要为新生的地壳物质。
Early Jurassic granites in the Southern Zhangguangcai Mountains show magma-mixing characteristics.In the granite mafic microgranular enclaves are well developed. They are mostly fine-grained dioritic magmatic enclaves. The enclaves highly vary in shape and size and have clear-cut,vague or transitional relationships with host rocks. It is evident that the mineral assemblage of enclaves is not in balance. For example,mineral has the characteristic of directional arrangement; the plagioclase has developed from the epicyclic zone and has the presence of both the old and the new generations,and there also appears acicular apatite. Research on geochemistry shows that enclaves and their host granite are closely related both in the REE and trace elements,which also shows a significant geochemical affinity. It indicates that Early Jurassic granitic rocks are of crust-mantle mixing,and that dark enclaves are formed by relatively basic mantle magma into the host magma,quenching and crystallizing. Granitic magma sources are mainly from newborn crust substance in the Southern Zhangguangcai Mountains.
Early Jurassic granites in the Southern Zhangguangcai Mountains show magma-mixing characteristics.In the granite mafic microgranular enclaves are well developed. They are mostly fine-grained dioritic magmatic enclaves. The enclaves highly vary in shape and size and have clear-cut,vague or transitional relationships with host rocks. It is evident that the mineral assemblage of enclaves is not in balance. For example,mineral has the characteristic of directional arrangement; the plagioclase has developed from the epicyclic zone and has the presence of both the old and the new generations,and there also appears acicular apatite. Research on geochemistry shows that enclaves and their host granite are closely related both in the REE and trace elements,which also shows a significant geochemical affinity. It indicates that Early Jurassic granitic rocks are of crust-mantle mixing,and that dark enclaves are formed by relatively basic mantle magma into the host magma,quenching and crystallizing. Granitic magma sources are mainly from newborn crust substance in the Southern Zhangguangcai Mountains.
引文
[1]周金城,徐夕生.寄主花岗岩对微花岗岩类包体的地球化学制约[J].地球化学,1994,23(3):254-261.
[2]李昌年.岩浆混合作用及其研究评述[J].地质科技情报,2002,21(4):49-54.
[3]DEBON F.Comparative major element chemistry in various“microgranular enclave-plutonic host”pairs[M]//DIDIER J,BARBARIN B.Enclaves and Granite Petrology.Amsterdam:Elsevier,1991:293-312.
[4]刘成东.东昆仑造山带东段花岗岩岩浆混合作用[M].北京:地质出版社,2008:1-100.
[5]王德滋,谢磊.岩浆混合作用:来自岩石包体的证据[J].高校地质学报,2008,14(1):16-21.
[6]陈斌,贺敬博,马星华.北太行山燕山期中酸性岩体中暗色包体的成因:岩石学、地球化学和锆石Hf-O同位素证据[J].中国科学:地球科学,2009,39(7):922-934.
[7]郭晓东,葛良胜,王梁,等.云南马厂箐岩体中深源包体特征及其锆石LA-ICP-MS U-Pb年龄[J].岩石学报,2012,28(5):1414-1424.
[8]魏启荣,王江海.青藏东缘六合—香多镁铁质深源包体岩石学和矿物学研究[J].矿物岩石,2004,24(1):17-28.
[9]范立婷,方适宜,陶志军,等.苗儿山产铀花岗岩中微粒包体(MME)的发现与壳-幔相互作用[J].矿物学报,2009(增刊):625-626.
[10]郝英,张维萍,岳可芬,等.地球深部包体与成矿关系——一个有意义的研究方向[J].地球科学与环境学报,2010,32(1):24-26.
[11]付强,葛文胜,温长顺,等.广西米场花岗岩及其暗色微粒包体的地球化学特征和成因分析[J].地球学报,2011,32(3):293-303.
[12]彭卓伦,RODNEY G,庄文明,等.华南花岗岩暗色微粒包体矿物组成及微结构研究[J].地学前缘,2011,18(1):63-73.
[13]DAHLQUIST J A.Mafic microgranular enclaves:early segregation from metaluminous magma(Sierra de Chepes),Pampean Ranges,NW Argentina[J].Journal of South American Earth Sciences,2002,15:643-655.
[14]ABDULLAH K,EMRE A.Mineralogy,whole-rock and Sr-Nd isotope geochemistry of mafic microgranular enclaves in Cretaceous Dagbasi granitoids,Eastern Pontides,NE Turkey:Evidence of magma mixing,mingling and chemical equilibration[J].Chemie der Erde Geochemistry,2009,69:247-277.
[15]ABDULLAH K,CUNEYT S.Calc-alkaline I-type plutons in the eastern Pontides,NE Turkey:U-Pb zircon ages,geochemical and Sr-Nd isotopic compositions[J].Chemie der Erde,2011,71:59-75.
[16]RAJAIEH M,KHALILI M,RICHARDS I.The significance of mafic microgranular enclaves in the petrogenesis of the Dehno Complex,Sanandaj-Sirjan belt,Iran[J].Journal of Asian Earth Sciences,2010,39:24-36.
[17]李宗怀,韩宝福,李辛子,等.新疆准噶尔地区花岗岩中微粒闪长质包体特征及后碰撞花岗质岩浆起源和演化[J].岩石矿物学杂志,2004,23(3):214-226.
[18]WYLLIE P J,COX K G,BIGGAR G M.The habit of apatite in synthetic systems and igneous rocks[J].Journal of Petrology,1962,3(2):238-243.
[19]肖庆辉,邱瑞照,邢作云,等.花岗岩成因研究前沿的认识[J].地质论评,2007,53(B08):12-27.
[20]程顺波,付建明,徐德明,等.湖南雪花顶花岗岩及其包体的地质地球化学特征和成因分析[J].大地构造与成矿学,2009,33(4):588-597.
[21]VERNON R H.Microgranitoid enclaves in granites-globules of hybrid magma quenched in a plutonic environment[J].Nature,1984,309:438-439.
[22]CASTRO A,MORENO-VENTAS I,DELA J D R.Microgranular enclaves as indicators of hybridization processes in granitoid rocks,Hercynian Belt,Spain[J].Geological Journal,1990,25:391-404.
[23]DIDIER J,Barbarin B.Enclaves and Granite Petrology[M].Amsterdam:Elsevier,1991:625.
[24]刘成东,张文秦,莫宣学,等.东昆仑约格鲁岩体暗色微粒包体特征与成因[J].地质通报,2002,21(11):739-744.
[25]陈国能,张珂,徐伟,等.华南中生代花岗岩岩石包体的成因与分类[J].中山大学学报:自然科学版,1993,32:305-311.
[26]HIBBARD M J.The magma mixing origin of mantled feldspars[J].Contributions to Mineralogy and Petrology,1981,76:158-170.
[27]周新民,姚玉鹏,徐夕生,等.浙东大衡山花岗岩中淬冷包体及其成因机制[J].岩石学报,1992,8(3):234-242.
[28]IRVINE T H,BARAGAR W R A.A guide to the chemical classification of the common volcanic rocks[J].Canadian Journal of Earth Sciences,1971,8(5):523-548.
[29]RICKWOOD P C.Boundary lines within petrologic diagrams which use oxides of major and minor elements[J].Lithos,1989,22(4):247-263.
[30]莫宣学,罗照华,邓晋福,等.东昆仑造山带花岗岩及地壳生长[J].高校地质学报,2007,13(3):403-414.
[31]BOYNTON W V.Geochemistry of the rare earth elements:Meteorite studies[M]//HENDERSON P.Rare Earth Element Geochemistry.Amsterdam:Elsevier,1984:63-114.
[32]SUN S S,MCDONOUGH W F.Chemical and isotopic systematics of oceanic basalts:Implications for mantle composition and processes[M]//SAUNDERS A D,NORRY M J.Magmatism in Ocean Basins.London:Geological Society,Special Publication,1989,42(1):313-345.
[33]杜杨松.论酸性—中酸性火成岩中包体的分类与命名[J].现代地质,1994,8(2):127-132.
[34]杜杨松.酸性—中酸性火山-侵入杂岩中岩石包体研究的新进展[J].现代地质,1996,10(2):169-174.
[35]杜杨松,车勤建,秦新龙,等.花岗质岩石中岩石包体研究的新进展[J].矿物岩石地球化学通报,2003,22(4):334-339.
[36]杜杨松,李铉具.安徽铜陵岩浆岩中辉长质岩石包体的发现及其地质意义[J].高校地质学报,2004,10(3):332-342.
[37]杜杨松,曹毅,袁万明,等.安徽沿江地区中生代碰撞后到造山后岩浆活动和壳幔相互作用:来自火山-侵入杂岩和岩石包体的证据[J].岩石学报,2007,23(6):1294-1302.
[38]朱金初,张佩华,谢才富,等.桂东北里松花岗岩中暗色包体的岩浆混合成因[J].地球化学,2006,35(5):506-516.
[39]朱永峰.长英质岩石中暗色微粒包体的形成机理[J].地球科学——中国地质大学学报,1995,20(5):521-525.
[40]BARBARIN B.Field evidence for successive mixing and mingling between the Piolard diorite and the Saint-Julien-la-Vetre Monzogranite(Nord-Forez,Massif Central,France)[J].Canada Journal of Earth Science,1988,25:49-59.
[41]BARBARIN B.Mafic magmatic enclaves and mafic rocks associated with some granitoids of the central Sierra Nevada batholith,California:nature,origin,and relations with the hosts[J].Lithos,2005,80:155-177.
[42]孙德有,吴福元,林强,等.张广才岭燕山早期白石山岩体成因与壳幔相互作用[J].岩石学报,2001,17(2):227-235.
[43]任永健,曹光远,于汪,等.黑龙江张家湾岩体锆石U-Pb年龄与地球化学及其地质意义[J].化工矿产地质,2014,36(4):193-207.
[2]李昌年.岩浆混合作用及其研究评述[J].地质科技情报,2002,21(4):49-54.
[3]DEBON F.Comparative major element chemistry in various“microgranular enclave-plutonic host”pairs[M]//DIDIER J,BARBARIN B.Enclaves and Granite Petrology.Amsterdam:Elsevier,1991:293-312.
[4]刘成东.东昆仑造山带东段花岗岩岩浆混合作用[M].北京:地质出版社,2008:1-100.
[5]王德滋,谢磊.岩浆混合作用:来自岩石包体的证据[J].高校地质学报,2008,14(1):16-21.
[6]陈斌,贺敬博,马星华.北太行山燕山期中酸性岩体中暗色包体的成因:岩石学、地球化学和锆石Hf-O同位素证据[J].中国科学:地球科学,2009,39(7):922-934.
[7]郭晓东,葛良胜,王梁,等.云南马厂箐岩体中深源包体特征及其锆石LA-ICP-MS U-Pb年龄[J].岩石学报,2012,28(5):1414-1424.
[8]魏启荣,王江海.青藏东缘六合—香多镁铁质深源包体岩石学和矿物学研究[J].矿物岩石,2004,24(1):17-28.
[9]范立婷,方适宜,陶志军,等.苗儿山产铀花岗岩中微粒包体(MME)的发现与壳-幔相互作用[J].矿物学报,2009(增刊):625-626.
[10]郝英,张维萍,岳可芬,等.地球深部包体与成矿关系——一个有意义的研究方向[J].地球科学与环境学报,2010,32(1):24-26.
[11]付强,葛文胜,温长顺,等.广西米场花岗岩及其暗色微粒包体的地球化学特征和成因分析[J].地球学报,2011,32(3):293-303.
[12]彭卓伦,RODNEY G,庄文明,等.华南花岗岩暗色微粒包体矿物组成及微结构研究[J].地学前缘,2011,18(1):63-73.
[13]DAHLQUIST J A.Mafic microgranular enclaves:early segregation from metaluminous magma(Sierra de Chepes),Pampean Ranges,NW Argentina[J].Journal of South American Earth Sciences,2002,15:643-655.
[14]ABDULLAH K,EMRE A.Mineralogy,whole-rock and Sr-Nd isotope geochemistry of mafic microgranular enclaves in Cretaceous Dagbasi granitoids,Eastern Pontides,NE Turkey:Evidence of magma mixing,mingling and chemical equilibration[J].Chemie der Erde Geochemistry,2009,69:247-277.
[15]ABDULLAH K,CUNEYT S.Calc-alkaline I-type plutons in the eastern Pontides,NE Turkey:U-Pb zircon ages,geochemical and Sr-Nd isotopic compositions[J].Chemie der Erde,2011,71:59-75.
[16]RAJAIEH M,KHALILI M,RICHARDS I.The significance of mafic microgranular enclaves in the petrogenesis of the Dehno Complex,Sanandaj-Sirjan belt,Iran[J].Journal of Asian Earth Sciences,2010,39:24-36.
[17]李宗怀,韩宝福,李辛子,等.新疆准噶尔地区花岗岩中微粒闪长质包体特征及后碰撞花岗质岩浆起源和演化[J].岩石矿物学杂志,2004,23(3):214-226.
[18]WYLLIE P J,COX K G,BIGGAR G M.The habit of apatite in synthetic systems and igneous rocks[J].Journal of Petrology,1962,3(2):238-243.
[19]肖庆辉,邱瑞照,邢作云,等.花岗岩成因研究前沿的认识[J].地质论评,2007,53(B08):12-27.
[20]程顺波,付建明,徐德明,等.湖南雪花顶花岗岩及其包体的地质地球化学特征和成因分析[J].大地构造与成矿学,2009,33(4):588-597.
[21]VERNON R H.Microgranitoid enclaves in granites-globules of hybrid magma quenched in a plutonic environment[J].Nature,1984,309:438-439.
[22]CASTRO A,MORENO-VENTAS I,DELA J D R.Microgranular enclaves as indicators of hybridization processes in granitoid rocks,Hercynian Belt,Spain[J].Geological Journal,1990,25:391-404.
[23]DIDIER J,Barbarin B.Enclaves and Granite Petrology[M].Amsterdam:Elsevier,1991:625.
[24]刘成东,张文秦,莫宣学,等.东昆仑约格鲁岩体暗色微粒包体特征与成因[J].地质通报,2002,21(11):739-744.
[25]陈国能,张珂,徐伟,等.华南中生代花岗岩岩石包体的成因与分类[J].中山大学学报:自然科学版,1993,32:305-311.
[26]HIBBARD M J.The magma mixing origin of mantled feldspars[J].Contributions to Mineralogy and Petrology,1981,76:158-170.
[27]周新民,姚玉鹏,徐夕生,等.浙东大衡山花岗岩中淬冷包体及其成因机制[J].岩石学报,1992,8(3):234-242.
[28]IRVINE T H,BARAGAR W R A.A guide to the chemical classification of the common volcanic rocks[J].Canadian Journal of Earth Sciences,1971,8(5):523-548.
[29]RICKWOOD P C.Boundary lines within petrologic diagrams which use oxides of major and minor elements[J].Lithos,1989,22(4):247-263.
[30]莫宣学,罗照华,邓晋福,等.东昆仑造山带花岗岩及地壳生长[J].高校地质学报,2007,13(3):403-414.
[31]BOYNTON W V.Geochemistry of the rare earth elements:Meteorite studies[M]//HENDERSON P.Rare Earth Element Geochemistry.Amsterdam:Elsevier,1984:63-114.
[32]SUN S S,MCDONOUGH W F.Chemical and isotopic systematics of oceanic basalts:Implications for mantle composition and processes[M]//SAUNDERS A D,NORRY M J.Magmatism in Ocean Basins.London:Geological Society,Special Publication,1989,42(1):313-345.
[33]杜杨松.论酸性—中酸性火成岩中包体的分类与命名[J].现代地质,1994,8(2):127-132.
[34]杜杨松.酸性—中酸性火山-侵入杂岩中岩石包体研究的新进展[J].现代地质,1996,10(2):169-174.
[35]杜杨松,车勤建,秦新龙,等.花岗质岩石中岩石包体研究的新进展[J].矿物岩石地球化学通报,2003,22(4):334-339.
[36]杜杨松,李铉具.安徽铜陵岩浆岩中辉长质岩石包体的发现及其地质意义[J].高校地质学报,2004,10(3):332-342.
[37]杜杨松,曹毅,袁万明,等.安徽沿江地区中生代碰撞后到造山后岩浆活动和壳幔相互作用:来自火山-侵入杂岩和岩石包体的证据[J].岩石学报,2007,23(6):1294-1302.
[38]朱金初,张佩华,谢才富,等.桂东北里松花岗岩中暗色包体的岩浆混合成因[J].地球化学,2006,35(5):506-516.
[39]朱永峰.长英质岩石中暗色微粒包体的形成机理[J].地球科学——中国地质大学学报,1995,20(5):521-525.
[40]BARBARIN B.Field evidence for successive mixing and mingling between the Piolard diorite and the Saint-Julien-la-Vetre Monzogranite(Nord-Forez,Massif Central,France)[J].Canada Journal of Earth Science,1988,25:49-59.
[41]BARBARIN B.Mafic magmatic enclaves and mafic rocks associated with some granitoids of the central Sierra Nevada batholith,California:nature,origin,and relations with the hosts[J].Lithos,2005,80:155-177.
[42]孙德有,吴福元,林强,等.张广才岭燕山早期白石山岩体成因与壳幔相互作用[J].岩石学报,2001,17(2):227-235.
[43]任永健,曹光远,于汪,等.黑龙江张家湾岩体锆石U-Pb年龄与地球化学及其地质意义[J].化工矿产地质,2014,36(4):193-207.