东天山印支早期尾亚石英正长岩：成岩作用及成岩意义

张遵忠,顾连兴,吴昌志,翟建平,李伟强,唐俊华

东天山印支早期尾亚石英正长岩：成岩作用及成岩意义

张遵忠,顾连兴,吴昌志,翟建平,李伟强,唐俊华

- 内生金属矿床成矿机制研究国家重点实验室(南京大学)南京大学地球科学系，内生金属矿床成矿机制研究国家重点实验室(南京大学)南京大学地球科学系，内生金属矿床成矿机制研究国家重点实验室(南京大学)南京大学地球科学系，南京大学环境学院，内生金属矿床成矿机制研究国家重点实验室(南京大学)南京大学地球科学系，内生金属矿床成矿机制研究国家重点实验室(南京大学)南京大学地球科学系南京 210093 南京大学环境学院，南京大学，南京 210093 中国地质大学地质过程与矿产资源国家重点实验室，北京 100083，南京 210093，南京 210093，南京大学，南京 210093，南京 210093，南京 210093
基金项目:
国家重点基础研究发展规划项目（编号：2001CB409802）、国家自然科学基金项目（40472042）和中国博士后科学基金项目（编号：2005038237）成果.感谢南京大学地球科学系严正富副教授、杨浩博士和新疆地矿局王金珠工程师参加了早期的野外工作,胡受奚教授对早期工作作了精心指导;本文成文过程中得到了南京大学周金城教授的有益指导,使作者受益匪浅;匿名审稿人对本文初稿认真、细致的审阅态度以及富有创造性的建议,对本文的质量提高给予很大帮助,作者等谨致谢忱.

收稿日期: 2005-12-01

修回日期: 2006-04-10

刊出日期: 2006-05-31

Weiya quartz syenite in early Indosinina from eastern Tianshan Mountains:petrogenesis and tectonic implications.

ZHANG ZunZhong~

Received Date: 01 December 2005

Revised Date: 10 April 2006

Publish Date: 31 May 2006

摘要

摘要: 前人对东天古生代的构造-热事件作了大量研究,得出了许多方面的重要认识,然对东天山印支期的构造演化目前仍不清楚。本文以印支早期的尾亚石英正长岩为例,通过其岩相学及地球化学特征研究,来探讨该岩体的成岩机制及成岩意义。尾亚石英正长岩主要组成矿物为石英(5%～10%)、斜长石(15%～20%,An16～18)和钾长石(60%～65%),含少量铁质黑云母(5%)和钙质角闪石(≈5%),不舍橄榄石和辉石。该岩石SiO_2含量为62．67%～66．22%,Na_2O+K_2O(10．25%～11．00%)和TiO_2(0．45%～0．70%)含量以及K_2O/Na_2O(0．85～1．60)、FeO~T/Mgo(5．7～15．86)和CaO/Na_2O(0．37～0．68)比值高,而Mgo(0．34%～0．43%)含量以及Al_2O_3/TiO_2(23．77～38．27)比值低,偏铝(ASI 0．89～0．98),富集Rb、Ba和Pb等大离子亲石元素(LILE)和U、Th、Zr和Hf等高场强元素(HFSE),亏损Sr等大离子亲石元素及Nb和Ti等高场强元素。ΣLREE,ΣHREE和ΣREE分别为76．00×10~(-6)～139．54×10~(-6),13．54×10~(-6)～22．67×10~(-6)和96．57×10~(-6)～153．08×10~(-6), (La/sm)_N,(Gd/Yb)_N,(La/Yb)_N分别为1．86～4．78,0．73～1．64和2．10～9．64,δEu为0．94～2．83,具有稀土总量较低、轻稀土比重稀土分馏大、轻、重稀土分馏不明显以及正Eu异常(0．94～2．83)的特征。岩相学及地球化学特征研究表明,尾亚石英正长岩不是幔源岩浆分异的产物,而是直接来自于壳源。通过对比分析其它正长岩地球化学特征并结合前人实验岩石学研究,得出了尾亚石英正长岩是在950℃～1100℃、15～20 kbar条件下,由陆内长英质麻粒岩在加厚陆壳底部发生增温和减压熔融的产物的认识。这样的成岩条件可能与特提斯洋于海西晚期—印支早期向北俯冲所引发的天山地区强烈的陆内A-型俯冲及随后的伸展作用有关。本文结果表明,东天山地区在二叠纪晚期到三叠纪早期可能发生了从受古亚洲洋俯冲-碰撞体系影响为主转变为受古特提斯洋构造域影响为主的重大事件。
- 正长岩 /
- 印支期 /
- 杂岩体 /
- 尾亚 /
- 东天山 /
- 新疆
- Syenite /
- Indosinian /
- Complex /
- Weiya /
- Eastern Tianshan /
- Xinjiang

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参考文献(60)

[1]	Abdel FM and Abdel R.1994. Nature of Biotites from Alkaline,Calcalkaline,and Peralumious Magmas.Journal of Petrology,35(2):525-541
[2]	Arth JG.1976. Behavior of trace elements during magmatic process-A summary of theoretical models and their applications.J.Res.USGS,4:41 -47
[3]	Bailey DK.1987. Mantle metasomatism:perspective and prospect.In:Fitton JG,Upton BGJ (eds.).Alkaline Igneous Rocks.Geol.Soc.Spec.Publ.,30:1 -13
[4]	Barker F,Wones DR,Sharp WN and Desborough GA.1975. The pikes peak batholith,Colorado Front Range,and a model for the origin of the gabbro-anorthosite-syenite-potassic granite suite.Precambrian Res.,2:97-160
[5]	Bea F,Arzamastsev A,Montero P and Arzamastseva L.2001. Aonmalous alkaline rocks of Soustov,Kola:evidence of mantle-drived matasomatic fluids affecting crustal materials.Contrib.Mineral.Petrol.,140:554-566
[6]	Boynton WV.1984. Geochemistry of the rare earth elements:meteorite studies.In:Henderson P (ed.).Rare earth element geoche-mistry.Elservier,63-114
[7]	Brown PE and Becker SM.1986. Fractionation,hybridisation and magmamixing in the Kialineq centre East Greenland.Contrib.Mineral.Petrol.,92:57 -70
[8]	Chen PR,Zhou XM,Zhang WL,Li HM,Fan CF,Sun T and Chen WF,Zhang M.2005. Petrogenesis and significance of early Yanshanian syenite-granite complex in eastern Nanling Range.Science in China (D),48(7):912 -924
[9]	Chen YJ,Chen HY,Zaw K,Pirajno F and Zhang ZJ.2004. The geodynamic setting of large-sclae metallogenisis in mainland china,exemplified by skarn type gold deposits.Earth Science Frontiers,11(1):57 -83 (in Chinese with English abstract)
[10]	Clemens JD and Vielzeuf D.1987. Constraints on melting and magma production in the crust.Earth Planet.Sci.Lett.,86:287 -306
[11]	Conceicao RV,Nardi LVS and Conceicao H.2000. The Santan polis syenite:genesis and evolution of Paleoproterozoic shoshonitic syenites in northeastern Brazil.Int.Geol.Rev.,42,941 -957
[12]	Cox KG,Bell JD and Pankhurst RJ.1979. The interpretation of igneous rocks.London:Allen and Unwin,1 -450
[13]	Del Lama EA,Zanardo A,Oliveira MAF and Morales N.2000. Exhumation of high-pressure granulites of the Guaxup Complex,Southeastern Brazil.Geol.J.,35:231-249
[14]	Deng JF,Luo Zhaohua,Zhao Hailing,Zhao Guochun,Dai Shengqian,Cao Yongqing and d Xuezheng.1998. Trachyte and syenite:petrogenesis constrained by the petrological phase equilibrium.Proceed Interna.Symp.100-th Anniv.Beijing Univ.Beijing:Nation Seism.Pub.,745 -757
[15]	Deng JF,Mo XX,Zhao HL,Wu ZX and Luo ZX,Su SG.2004. A new model for the dynamic evolution of Chinese lithosphere:continental roots-plume tectonics.Earth.Sci.Rev.,65:223-275
[16]	Downes H.1993. The nature of the lower continental crust of Europe:petrological and geochemical evidence from xenoliths.Phys.Earth Planet.Inter.,79:195-218
[17]	Drake MJ.1975. The oxidation state of europium as an indicator of oxygen fugacity.Geochim.Cosmochim.Acta.,39:55-64
[18]	Eby GN,Woolley A,Din V and Platt G.1998. Geochemistry and petrogenesis of nepheline syenites:Kasungu-Chipala,Ilomba,and Ulindi nepheline syenite intrusions,North Nyasa,alkaline province,Malawi.J.Petrol.,39:1405-1424
[19]	Fujimaki H.1986. Partition coefficients of Hf,Zr,and REE between zircon,apatite,and liquid.Contrib.Mineral.Petrol.,94:685-701
[20]	Gao S,Zhang BR and Luo TC.1992 Chemical composition of the continental crust in the Qingling orogenic belt and its adjacent North China and Yangtze cratons.Geochim.Cosmochim.Acta.,56:3933-3950
[21]	Gary M,Jr RM and Wolf CL.1973. Glossary of Geology.American Geological Institute,Washington,D.C.,1 -805
[22]	Green TH.1994. Experimental studies of trace-element partitioning applicable to igneous petrogenesis-Sedona 16 years later.Chem.Geol.,117:1 -36
[23]	Green TH.1995. Significance of Nb/Ta as an indicator of geochemical processes in the crust-mantle system.Chem.Geol.,120:347-359
[24]	Grotenhuis SM,Trouw RAJ and Passchier CW.2003. Evolution of mica fish in mylonitic rocks.Tectonophysics,372:1-21
[25]	Gu LX,Yang H,Yan ZF and Liao JJ.1996. Geology and genesis of peraluminous granites in East Tianshan Upper Paleozoic island arc belt.Chinese J.Geochem.,15(1):33-43
[26]	Gu LX,Hu SX,Chu Q,Yu CS and Xiao XJ.1999. Pre-collision granites and post-collision intrusive assemblage of the Kelameili-Harlik orogenic belt.Acta Geologica Sinica (English edition),73 (3):316-329
[27]	Gu LX,Gou XQ,Zhang ZZ,Wu CZ,Liao JJ,Yang H,Yiin L and Min MZ.2003. Geochemistry and petrogenesis of a multi-zoned high Rb and F granite in eastern Tianshan.Acta Petrologica Siinica,19(4):585 -600 (in Chinese with English abstract)
[28]	Guo J and Green TH.1989. Barium partitioning between alkali feldspar and silicate liquid at high temperature and pressure.Contrib.Mineral.Petrol.,102:328-335
[29]	Guo ZF,Deng JF,Xu ZQ,Mo XX and Luo ZH.1998. Late PalaeozoicMesozoic intracontinental olrogenic process and intermedate-acidic igneous rocks from the eastern Kunlun Mountains of north western China.Geosciences,12 (3):344-352 (in Chinese with English abstract)
[30]	Guo ZJ,Zhang ZC,Liao GH and Fang SH.2002. Uplifting process of eastern Tianshan Mountains:Evidence from fission-track age and tectonic significance.Xinjiang Geol.,20(4):331 -334(in Chinese with English abstract)
[31]	Han BF,Wang SG,Jahn BM,Hong DW,Kagami H and Sun YL.1997. Depleted-mantal source for the Ulungur River A-type granites from North Xinjiang,China:Geochemistry and Nd-Sr isotopic evidence,and implications for Phanerozoic crustal growth.Chem.Geol.,138:135-159
[32]	Harris NBW,Duyverman HJ and Almond DC.1983. The trace element and isotope geochemistry of the Sabaloka igneous complex,Sudan.J.Geol.Soc.,London,140:245-256
[33]	Harris C,Marsh JS and Milner SC.1999. Petrology of the alkaline core of the Messum igneous complex,Namibia:evidence for the progressively decreasing effect of crustal contamination.J.Petrol.,40:1377 -1397
[34]	Hayob JL,Essene E J,Ruiz J,Ortega-Guiti rrez F and Aranda-G mez JJ.1989. Young high-temperature granulites from the base of the crust in central Mexico.Nature,342:265 -268
[35]	Hergt JM,Peate DW and Hawkesworth CJ.1991. The petrogenesis of Mesozoic Gondwana low-Ti flood basalts.Earth.Planet.Sci.Lett.,105:134-148
[36]	Hermann J and Green DH.2001. Experimental constraints on high pressure melting in subducged crust.Earth Planet.Sci.Lett.,188:149-168
[37]	Hinton RW and Upton BGJ.1991. The chemistry of zircon:Variations within and between large crystals from syenite and alkali basalt xenoliths.Geochim.Cosmochim.Acta,55:3287-3302
[38]	Hofmann AW.1988. Chemical differentiation of the earth:the relationshiop between mantle,continental crust,and oceanic crust.Earth Planet.Sci.Lett.,90:297 -314
[39]	Hole MJ,Suanders AD,Marriner GF and Tarney J.1984. Subduction of pelagic sediments:Implications for the origin of Ce-anomalous basalts from the Marrana island.J.Geol.Soc.London,141:453-472
[40]	Holland T and Blundy J.1994. Non-ideal interactions in calcic amphiboles and their bearing on amphibole-plagioclase thermometry.Contrib.Mineral.Petrol.,116:433 -447
[41]	Holtz F,Johannes W,Tamic N and Behrens H.2001. Maximum and minimum water contents of granitic melts generated in the crust:a reevaluation and implications.Lithos,56:1-14
[42]	Hong DW,Zhang JS,Wang T,Wang SG and Xie XL.2004. Continental crustal growth and the supercontinental cycle:evidence from the Central Asian Orogenic Belt.J.Asian Earth Sci.,23:799 -813
[43]	Huang WL and Wyllie PJ.1975. Melting reactions in the system NaAlSi3O8-SiO2 to 35 kilobar,dry and with excess water.J.Geol.,83:737-748
[44]	Huang and Wyllie PJ.1981. Phase relationship of S-type granite with H2O to 35 kbar:muscovite granite from Harney Peak,South Dakota.J.Geophys.Res.,86:10515 -10529
[45]	Huang WL and Wyllie PJ.1986. Phase relationships of gabbro-tonalitegranite-water at 15 kbar with applications to differewntiation and anatexis.Am.Mineral.,71:301 -316
[46]	Hu AQ,Wang ZG and Tu GC.1997. Geological Evolution,Petrogenesis and Metallogeny of North Xiinjiang.Beijing:Science Press,1 -246(in Chinese)
[47]	Hu B,Wang JB,Gao ZJ,Lu Q and Fang XT.1964. Several problems of tectonic evolution in Xinjiang.Acta Geologica Sinica.44(2):156 -170 (in Chinese)
[48]	Hu SX,Guo JC and Gu LX.1990. Geology of the Caledonian orogenic belt and its importance to the framework of East Tianshan (E 85-95).Geoscience of Xinjiang,1:32 -45 (in Chinese)
[49]	Institute of Geology,Chinese Academy of Sciences.1959. Tectonic Outline of China.Beijing:Science Press,1-320 (in Chinese)
[50]	Iwamori H.2004. Phases relations of peridotites under H2O-saturated conditions and ability of subducting plates for transport of H2 O.Earth Planet.Sci.Lett.,227:57 -71
[51]	Jiang SH,Nie FJ,Chen W,Liu Y,Bai DM,Liu XY and Zhang SH.2003. The determination of the emplacement age of granite in Mingshui,Beishan area,and its implication.Acta Petrologica et Mineralogica,22(2):107 -111 (in Chinese with English abstract)
[52]	Johannes W and Holtz F.1996. Petrogenesis and experimental petrology of granitic rocks.Springer-Verlag Berlin Heidelberg,1-335
[53]	King PL,White AJR,Chappell BW and Allen CM.1997. Characterizaiton and origin of aluminous A-type granites from the Lachlan Fold Belt,Southeastern Australia.J.Petrol.,38:371-391
[54]	Leake BE,Woolley A,Arps C,et al.1997. Nomenclature of amphiboles:report of the subcommittee on amphiboles of the international mineralogical association,commission on new minerals and mineral names.The Canadian Mineralogist,35:219-246
[55]	Li HQ,Chen FW,Lu YF,Yang HM,Guo J and Mei YP.2005. New chronological evidence for Indosinian diagenetic mineralization in eastern Xinjiang,NW China.Acta Geologica Sinica (English edition),79 (2):264-275
[56]	Li JY and Xiao XC.1999. Brief reviews on some issues of framework and tectonic evolution of Xinjiang crust,NW China.Scientia Geologica Sinica,34(4):405 -419(in Chinese with English abstract)
[57]	Li JY,Wang KZ,Li WQ,Guo HC,Song B,Wang Y,Mo SG,Zhao ZR,Zhu ZX and Pan CZ.2002. Tectonic evolution since the late Paleozoic and mineral prosecting in eastern Tianshan Mountains,NW China.Xinjiang Geol.,20 (4):295 -301 (in Chinese with English abstract)
[58]	Li JY,Xiao WJ,Wang KZ,Sun GH and Gao LM.2003. NeoproterozoicPaleozoic tectonostratigraphy,magmatic activities and tectonic evolugion of Eastern Xinjiang,NW China.In:Mao JW,Goldfarb R,Seltmann R,Wang DA,Xiao WJ 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,IAGOD Guidbook Series 10:CERCAMS/NHM London,31-74
[59]	Li SG,Nie YH,Liu DL and Zheng SG.1998. Interaction between subducted continental crust and the mantle-I.Major and trace element geochemistry of the syncollisional mafic-ultramafic intrusions in the Dabie Mountains.Science in China (series D),41 (5):545 -552
[60]	Li SL and Feng XC.1997. Super-unit association of Weiya,eastern Tianshan of Xinjiang.Xinjiang Geol.,15 (1):13-27 (in Chinese with English abstract)

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东天山印支早期尾亚石英正长岩：成岩作用及成岩意义

Weiya quartz syenite in early Indosinina from eastern Tianshan Mountains:petrogenesis and tectonic implications.

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