贠杰;孙吉明;朱小辉;赵力颖;何立;周明兴;高尚;赵海璇;

• 1:河北省区域地质矿产调查研究所
• 2:中国地质调查局西安地质调查中心

摘要(Abstract)：

哈夏林场一带发育一套典型的"双峰式"火山岩组合,岩石类型以拉斑玄武岩系列为主,含少量的流纹岩,属高钾钙碱性系列。流纹岩LA-ICP-MS锆石U-Pb同位素年龄显示该套岩石的形成年龄为(296.6±2.7)Ma,为早二叠世产物。玄武岩富钠贫钾(K_2O/Na_2O=0.21~0.37),高Al(w(Al_2O_3)=17.67%~19.65%)、低Mg(w(MgO)=3.30%~4.64%),表明原始岩浆经历了明显的橄榄石和辉石的分离结晶作用。玄武岩具轻微右倾的稀土元素配分模式,微弱的Eu正异常,富集大离子亲石元素Rb、高场强元素Th、Zr、Hf,亏损高场强元素Sr、P、Ti;岩石地球化学特征及岩石学实验证明,玄武岩为岩石圈地幔尖晶石二辉橄榄岩区域低程度(5%)的部分熔融产物,并在上升过程中经历了明显的分离结晶作用。流纹岩与玄武岩体现出相似的稀土元素配分模式和微量元素特征,并具有一致的演化趋势,暗示二者具有同源演化特征。流纹岩为玄武岩上升过程中分离结晶作用的产物。该套"双峰式"火山岩组合证实伊犁北缘哈夏林场一带在二叠纪时期处于伸展构造背景,此时北天山洋已完全封闭,并开始进入碰撞后的伸展阶段。

关键词(KeyWords)： 早二叠世;“双峰式”火山岩;LA-ICP-MS锆石U-Pb年龄;岩石成因

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41502061);; 中国地质调查局项目(1212011220649)

作者(Author): 贠杰;孙吉明;朱小辉;赵力颖;何立;周明兴;高尚;赵海璇;

Email:

参考文献(References)：

• [1]Coleman R G.Continental growth of Northwest China[J].Tectonics,1989,8(3):621-635.
• [2]Khain E V,Bibikova E V.The Palaeo-Asian ocean in the Neoproterozoic and Early Palaeozoic:New geochronologic data and palaeotectonic reconstructions[J].Precambrian Research,2003,122(1/4):329-358.
• [3]Sengor A M,Natalin B A,Burtman V S.Evolution of the Altaid tectonic collage and Palaeozoic crustal growth in Eurasia[J].Nature,1993,364:299-307.
• [4]Yakubchuk A.Architecture and mineral deposit setting of the Altaid orogenic collage:A revised model[J].Journal of Asian Earth Sciences,2004,23(5):761-779.
• [5]车自成,刘洪福,刘良.中天山造山带的形成与演化[M].北京:地质出版社,1994.
• [6]车自成,刘良,刘洪福,等.论伊犁古裂谷[J].岩石学报,1996,12(3):478-490.
• [7]任纪舜,王作勋,陈炳蔚.从全球看中国大地构造:中国及邻区大地构造图简要说明[M].北京:地质出版社,1999.
• [8]赵振华,白正华,熊小林,等.西天山北部晚古生代火山-浅侵位岩浆岩40 Ar/39 Ar同位素定年[J].地球化学,2004,32(4):317-327.
• [9]Zhu Y F,Zhang L F,Gu L B.The zircon SHRIMP chronology and trace element geochemistry of the Carboniferous volcanic rocks in western Tianshan Mountains[J].Chinese Science Bulletin,2005,50(19):2201-2212.
• [10]王强,赵振华,许继峰,等.天山北部石炭纪埃达克岩-高镁安山岩-富Nb岛弧玄武质岩:对中亚造山带显生宙地壳增生与铜金成矿的意义[J].岩石学报,2006,22(1):11-30.
• [11]朱永峰,周晶,郭漩.西天山石炭纪火山岩岩石学及Sr-Nd同位素地球化学研究[J].岩石学报,2006,22(5):1341-1350.
• [12]钱青,高俊,熊贤明,等.西天山昭苏北部石炭纪火山岩的岩石地球化学特征、成因及形成环境[J].岩石学报,2006,22(5):1307-1323.
• [13]夏林圻,夏祖春,徐学义,等.天山石炭纪大火成岩省与地幔柱[J].地质通报,2004,23(9):903-910.
• [14]夏林圻,李向民,夏祖春,等.天山石炭-二叠纪大火成岩省裂谷火山作用与地幔柱[J].西北地质,2006,39(1):1-49.
• [15]Xia L Q,Xia Z C.Carboniferous Tianshan igneous megaprovince and mantle plume[J].Geological Bulletin of China,2004,23(9):903-910.
• [16]Xia L Q,Xia Z C,Xu X Y.Relative contributions of crust and mantle to the generation of the Tianshan Carboniferous rift-related basic lavas,northwestern China[J].Journal of Asian Earth Sciences,2008,31(4/6):357-378.
• [17]Wang J B,Wang Y M,Wang L J.The junggar immature continental crust province and its mineralization[J].Acta Geologica Sinica,2004,78(2):337-344.
• [18]韩宝福,何国琦,吴泰然,等.天山早古生代花岗岩锆石U-Pb定年、岩石地球化学特征及其大地构造意义[J].新疆地质,2004,22(11):4-11.
• [19]张传林,周刚,王洪燕,等.塔里木和中亚造山带西段二叠纪大火成岩省的两类地幔源区[J].地质通报,2010,29(6):779-794.
• [20]叶海敏,叶现韬,张传林.新疆西天山尼勒克二叠纪火山岩的地球化学特征及构造意义[J].岩石学报,2013,29(10):3389-3401.
• [21]夏林圻,张国伟,夏祖春,等.天山古生代洋盆开启、闭合时限的岩石学约束:来自震旦纪、石炭纪火山岩的证据[J].地质通报,2002,21(2):55-62.
• [22]Windley B F,Allen M B.Paleozoicaccretion and Cenozoic rede formation of the Chinese Tien Shan Rang[J].Central Asia Geology,1990,18(2):128-131.
• [23]Xiao W J,Zhang L C,Qin K Z.Paleozoic accretionary and collisional tectonics of the eastern Tianshan(China):Implication for the continental growth of central Asia[J].American Journal of Science,2004,304(4):370.
• [24]夏祖春,徐学义,夏林圻,等.天山石炭纪-二叠纪后碰撞花岗质岩石地球化学研究[J].西北地质,2005,38(1):1-14.
• [25]李锦轶,宋彪,王克卓,等.东天山吐哈盆地南缘二叠纪幔源岩浆杂岩:中亚地区陆壳垂向生长的地质记录[J].地球学报,2006,27(5):424-446.
• [26]吴华,李华芹,莫新华,等.新疆哈密白石泉铜镍矿区基性-超基性岩的形成时代及其地质意义[J].地质学报,2005,79(4):489-502.
• [27]宋志瑞,肖晓林,罗春林,等.新疆伊宁盆地尼勒克地区二叠纪地层研究新进展[J].新疆地质,2005,23(4):334-338.
• [28]肖文交,Wingley B F,阎全人,等.北疆地区阿尔曼太蛇绿岩锆石SHRIMP年龄及其大地构造意义[J].地质学报,2006,80(1):32-37.
• [29]王式洸,韩宝福,洪大卫.新疆乌伦古河碱性花岗岩的地球化学及其构造意义[J].地质科学,1994,28(4):373-382.
• [30]徐学义,何世平,马中平,等.新疆柯坪库木如吾祖克地区二叠纪火山岩[J].西北地质,2002,35(3):35-41.
• [31]Jahn B M.Phanerozoic continental growth in Central Asia[J].Journal of Asia Earth Science,2004,23(5):599-603.
• [32]Zhou M F,Lesher C M,Yang Z X.Geochemistry and petrogenesis of 270 Ma Ni-Cu(PGE)sulfide-bearing mafic intrusions in the Huangshan district,Eastern Xinjiang,Northwest China:Implications for the tectonic evolution of the Central Asian orogenic belt[J].Chemical Geology,2004,54(5):63-81.
• [33]Zhang C L,Li X H,Li Z X.A Permian layered intrusive complex in the western Tarim Block,Northwestern China:Product of a ca.275 Ma mantle plume?[J].Journal of Geology,2008,116(3):269-287.
• [34]Liu Y S,Hu Z C.In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J].Chemical Geology,2008,57(1/2):34-43.
• [35]Andersen T.Correction of common Pb in U-Pb analyses that do not report 204Pb[J].Chemical Geology,2002,192(1/2):59-79.
• [36]Ludwig K R.Isoplot:A plotting and regression program for radiogenic-isoplot date[J].Open File Report,U.S.G.S.,1991,4:488-557.
• [37]Wilson M.Igneous petrogenesis:A global tectonic approach[M].London:Unwin Hyman,1989.
• [38]Sun S S,Mcdonough W F.Chemical and isotopic systematics of oceanic basalts:Implications for mantle composition and processes[J].Geological Society London Special Publications,1989,42(1):313-345.
• [39]Roex A P,Dick H J,Brlank A M.Geochemistry,mineralogy and petrogenesis of lavas erupted along the Southwest Indian Ridge between the Bouvet Triple Junction and 11Degrees East[J].Petrol.,1983,24(3):267-318.
• [40]Hoskin P W,Ireland T R.Rare earth element chemistry of zircon and its use as a provenance indicator[J].Geology,2000,28(7):627-630.
• [41]Randall G,Grakoui A,Rice C M.Clearance of replicating hepatitis C virus replicon RNAs in cell culture by small interfering RNAs[J].Proceedings of the National Academy of Sciences of the United States of America,2003,100(1):235-340.
• [42]李华芹,周肃,蔡红.新疆北部尼勒克铜矿成矿作用年代学研究[J].地球学报,1997,18(增刊):185-187.
• [43]潘明臣,于海峰,王福君,等.新疆博乐地区下二叠统乌郎组火山岩特征与构造环境分析[J].地质与资源,2011,20(3):226-230.
• [44]Taylor S R,Mclennan S M.The continental crust:Its composition and evolution:An examination of the geochemical record preserved in sedimentary rocks[J].The Journal of Geology,1986,94(4):632-633.
• [45]张招崇,王福生.峨眉山大陆溢流玄武岩省苦橄质岩石的高镁橄榄石和高铬尖晶石及其意义[J].自然科学进展,2004,14(1):70-74.
• [46]徐义刚.上地幔橄榄岩粒间组分的微量元素特征及其成因探讨[J].科学通报,1999,44(15):1670-1675.
• [47]Perfit M R.Chemical characteristics of island-arc basalts:Implications for mantle sources[J].Chemical Geology,1980,30(3):227-256.
• [48]Hergt J M,Peate D W,Hawkesworth C J.The petrogenesis of Mesozoic Gondwana low-Ti flood basalts[J].Earth and Planetary Science Letters,1991,105(1/3):134-148.
• [49]Albarede F.How deep do common basaltic magmas form and differentiate?[J].Geophy.Res.,1992,97(7):10997-11009.
• [50]Xu Y G.Petrologic and geochemical constraints on the petrogenesis of Permian–Triassic Emeishan flood basalts in southwestern China[J].Lithos,2001,58(3/4):145-168.
• [51]肖龙,徐义刚,梅厚钧,等.云南宾川地区峨眉山玄武岩地球化学特征:岩石类型及随时间演化规律[J].地质科学,2003,38(4):478-494.
• [52]Aldanmaz E,Pearce J A,Thirwell M F.Petrogenetic evolution of late Cenozoic,post-collision volcanism in western Anatolia,Turkey[J].Volcanol.Geotherm.Res.,2000,102(1/2):67-95.
• [53]Grove T L,Donnelly-Nolan J M.The evolution of young silicic lavas at Medicine Lake Volcano-California:Implications for the origin of compositional gaps in calc-alkaline series lavas[J].Contributions to Mineralogy and Petrology,1986,92(3):281-302.
• [54]Bropby J G.Composition gaps,critical crystallinity,and fractional crystallization in orogenic(calc-alkaline)magmatic systems[J].Contributions to Mineralogy and Petrology,1991,109(2):173-182.
• [55]Geist D,Howard K A,Larson P.The generation of oceanic rhyolites by crustal fractionation:The basalt-rhyolite association at Volcano Alcedo,Galapagos Archipelago[J].Journal of Petrology,1995,36:965-982.
• [56]Cleverly R W,Betton P J,Bristow J W.Geochemistry and petrogenesis of the Lebombo rhyolites[J].Geology of South Africa,1984,13:171-194.
• [57]Bacon M P,Belastock R A,Tecotzky M.Lead-210and polonium-210in ocean water profiles of the continental shelf and slope south of New England[J].Continental Shelf Research,1988,8(5/7):841-853.
• [58]Brouxel M,Lapierre H.The deep layers of a Paleozoic arc:Geochemistry of the Copley-Blaklala series,northern California[J].Earth and Planetary Science Letters,1987,85(4):386-400.
• [59]Doe B R,Leeman W P,Christiansen R L.Lead and Strontium isotopes and related trace elements as genetic tracers in the Upper Cenozoic rhyolite-basalt association of the Yellowstone plateau volcanic field[J].Journal of Geophysics Research,1982,87(6):4785-4806.
• [60]Huppert H E,Sparks R S.The generation of granitic magmas by intrusion of basalt into continental crust[J].Journal of Petrology,1988,29:599-824.
• [61]Hildreth W.Gradients in silicis magma chambers:Implications for lithospheric magmatism[J].Journal of Geophysical Research,1981,86(11):10153-10192.
• [62]Cull J P,OReilly S Y,Griffin W L.Xenolith geotherms an crustal models in eastern Australia[J].Tectonophysics,1991,192(3/4):359-366.
• [63]Zhang X H,Zhang H F.Geochemistry of Permian bimodal volcanic rocks from central Inner Mongolia,North China:Implication for tectonic setting and Phanerozoic continental growth in Central Asian Orogenic Belt[J].Chemical Geology,2008,249(3/4):262-281.
• [64]李献华,周汉文,李正祥,等.川西新元古代双峰式火山岩成因的微量元素和Sm-Nd同位素制约及其大地构造意义[J].地质科学,2002,37(3):264-276.
• [65]Duncan A R,Erlank A J,Marsh J S.Regional geochemistry of the Karoo igneous province[J].Special Publication Geological Society of Africa,1984,13:355-388.
• [66]Garland F,Hawkesworth C J,Mantovanim S M.Description and petrogenesis of the Parana rhyolites,southern Brazil[J].Journal of Petrology,1995,36:1193-1227.
• [67]Pin C,Marinl F.Early Ordovician continental break-up in Variscan Europe:Nd-Sr isotope and trace element evidence from bimodal igneous associations of the southern Massif Central,France[J].Lithos,1993,29(3/4):177-196.
• [68]Hochstaedter A G,Gil1JB.Volcanism in the Sumisu Rift:Element,volatile and stable geochemistry[J].Earth and Planetary Science Letters,1990,100(1/3):179-194.
• [69]Shinjo R,Kato Y.Geochemical constraints on the origin of bimodal magmatism at the Okinawa Trough,an incipient backarc basin[J].Lithos,2000,54(3/4):117-137.
• [70]Frey F A,Gerlach D C,Hickey R L,et al.Petrogenesis of the Laguna del Maule volcanic complex,Chile(36°S)[J].Contributions to Mineralogy&Petrology,1984,88(1):133-149.
• [71]Coulon C,Maluski H,Bollinger C.Mesozoic and Cenozoic volcanic rocks from central and southern Tibet:39 Ar/40 Ar dating,petrological characteristics and geodynamic significance[J].Earth and Planetary Science Letters,1986,79(3):281-302.
• [72]钱青,王焰.不同构造环境中双峰式火山岩的地球化学特征[J].地质地球化学,1999,27(4):29-32.
• [73]肖序常,汤耀庆,冯益民,等.新疆北部及邻区大地构造[M].北京:地质出版社,1992.
• [74]李生虎,杜青.乌苏县莫托沟-古尔图蛇绿岩[J].新疆地质,1994,12(3):265-271.
• [75]汤耀庆,高俊,赵民.西南天山蛇绿岩和蓝片岩[M].北京:地质出版社,1995.
• [76]朱志新,李锦轶,董连慧,等.新疆南天山盲起苏晚石炭世侵入岩的确定及对南天山洋盆闭合时限的限定[J].岩石学报,2008,24(12):2761-2766.
• [77]高永利,李永军,孔德义,等.西天山阿吾拉勒一带阿克沙克组的厘定[J].新疆地质,2006,24(3):215-227.
• [78]熊绍云,余朝丰,李玉文,等.伊犁地块下石炭统阿克沙克组沉积特征及演化[J].石油学报,2011,32(5):797-805.
• [79]高俊,龙灵利,钱青,等.南天山:晚古生代还是三叠纪碰撞造山带[J].岩石学报,2006,22(5):1049-1061.
• [80]朱志新,董连慧,刘淑聪,等.新疆西天山伊犁地块晚古生代火山岩地质特征及构造意义[J].新疆地质,2012,30(3):258-263.
• [81]韩宝福,季建清,宋彪,等.新疆准噶尔晚古生代陆壳垂向生长(I):后碰撞深成岩浆活动的时限[J].岩石学报,2006,22(5):1077-1086.
• [82]童英,王涛,洪大卫,等.北疆及邻区石炭-二叠纪花岗岩时空分布特征及其构造意义[J].岩石矿物学杂志,2010,29(6):619-641.
• [83]唐功建,陈海红,王强,等.西天山达巴特A型花岗岩的形成时代与构造背景[J].岩石学报,2008,24(5):947-958.
• [84]毛启贵,肖文交,韩春明,等.东准噶尔地区晚古生代向南增生:来自A型花岗岩的启示[J].岩石学报,2008,24(4):733-742.
• [85]杨高学,李永军,司国辉,等.东准卡拉麦里地区贝勒库都克岩体锆石LA-ICPMS U-Pb测年及地质意义[J].大地构造与成矿学,2010,34(1):133-138.