阿尔金山东端余石山铌钽矿区霓辉正长岩的LA-ICP-MS定年及对成矿时代的制约
LA-ICP-MS Dating of the Aegirine-Augite Syenite of Yushishan Nb-Ta Deposit in Eastern Altun and Its Constraints on the Metallogenetic Age
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摘要: 余石山铌钽矿床是近年来发现的一大型矿床,位于阿尔金造山带之红柳沟-拉配泉蛇绿构造混杂岩带、祁连造山带、欧龙布鲁克微陆块的结合部位.对矿区进行成矿背景研究时发现,矿区赋矿地层主要为长城系熬油沟组,岩性组合为变质火山岩及大理岩,穿插有霓辉正长岩体,其中发育细粒烧绿石与霓辉石等富铌钽矿物.并对霓辉正长岩进行锆石LA-ICP-MS年代学测定,结果表明霓辉石正长岩成岩年龄为(776.8±2.5) Ma,成矿与成岩年龄相近或稍晚,表明该霓辉正长岩和铌钽矿床可能形成于南华纪Rodinia超大陆裂解时所产生的大陆边缘裂谷构造环境.
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关键词:
- 阿尔金东段 /
- 余石山铌钽矿床霓辉正长岩 /
- LA-ICP-MS锆石U-Pb定年
Abstract: Lying in the joint of Hongliugou-Lapeiquan ophiolitic melange zone (eastern part of the Altun Mountains), Qilian orogenic belt and Oulongbuluke microcontinent, Yushishan Nb-Ta Deposit is a large-size deposit recently discovered. Based on the study of its metallogenic background, the major ore-bearing strata is found to be Ao'yougou Formation of Changchengian Period. The lithological association includes metamorphic volcanic rock and marble, mixed with aegirine-augite syenite, where develop minerals rich in Nb-Ta such as fine-grain pyrochlore and aegirine-augite. The LA-ICP-MS dating for zircons from an aegirine-augite syenite sample yields the diagenetic age of 776.8±2.5 Ma, indicating that the metallogenic age is similar or slightly later than the mineralization of the rock. Combined with petrological-mineralogical characteristic under the microscope and metallogenic age, the aegirine-augite syenite and Nb-Ta deposit were probably formed in continental rift tectonic background induced by the breakup of Rodinia supercontinent in Nanhua Period. -
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崔军文,唐哲民,邓晋福,等. 阿尔金断裂系[M].北京:地质出版社,1999:137-213.
Cui Junwen, Tang Zhemin,Deng Jinfu, et al.Altyn fault Svstem[M]. Geological Publishing House, Beijing,1999,137-213(in Chinese with English abstract).
车自成,刘良,罗金海. 中国及其邻区区域大地构造学[M].北京:科学出版社,2002:207-369.
Che Z C, Liu L, Luo J H. Regional China and adjacent area geotectonics[M]. Science Publishers,Beijing,2002,207-369 (in Chinese with English abstract).
陈能松,王勤燕,陈强,等.柴达木和欧龙布鲁克陆块基底的组成和变质作用及中国中西部古大陆演化关系初探[J].地学前缘,2007,14(1):43-55.
Chen N S,Wang Q Y,Chen Q,Li X Y.Components and metamorphism of the basements of the Qaidam and Olongbuluke micro-continental blocks, and a tentative interpretationof paleocontinental evolution in NW-Central China[J].Earth Scine-ce Frontiers,2007,14(1): 043-055 (in Chinese with English abstract).
高晓峰,校培喜,过磊,等. 北阿尔金地区早古生代有限洋盆开启时限:来自斜长花岗岩的证据[J].中国科学:地球科学, 2012,42(3):359-368.
Gao XF, Xiao PX, Guo L, et al. Opening of an Early Paleozoic limited oceanic basin in the northern Altyn area: Constraints from plagiogranites in the Hongliugou-Lapeiquan ophiolitic mélange[J]. Scientia Sinica (Terrae), 2012,42(3): 359-368(in Chinese).
葛肖虹,刘俊来. 北祁连造山带的形成与背景[J].地学前缘, 1999,6(4):223-230.
Ge XH, Liu JL. Formation and tectonic background of the northern qilian orogenic belt[J]. Earth Science Frontiers, 1999,6(4): 223-230. (in China with English abstract) 冯益民,何世平.祁连山大地构造与造山作用[M]. 北京:地质出版社, 1996.
Feng YM, He SP. Mother earth structure and orogenesis in Qiling[M]. The Geological Publishing House, Beijing, 1996 (in Chinese with English abstract).
刘良, 张安达, 陈丹玲, 等.阿尔金江尕勒萨依榴辉岩和围岩锆石LA-lCP-MS微区原位定年及其地质意义[J].地学前缘, 2007, 14(1): 98-107.
Liu L, Zhang A D, Chen D L, et al. Implications Based on LA-ICP-MS Zircon U-Pb Ages of Eclogite and Its Country Rock from Jianggalesayi Area, Altyn Tagh, China[J]. Earth Science Frontiers, 2007,14(1): 98-107.(in Chinese with English abstract).
郝杰,王二七,刘小汉,等. 阿尔金山脉中金雁山早古生代碰撞造山带:弧岩浆岩的确定与岩体锆石U-Pb和蛇绿混杂岩40Ar/39Ar年代学研究的证据[J].岩石学报, 2006,22(11):2743-2752.
Hao J, Wang E Q, Liu X H, et al. Jinyanshan collisional oroginic belt of the early Paleozoic in the Altun Mountains: evidence from single zircon U-Pb and 40Ar/39Ar isotopic dating for the arc magmatite and ophiolitic melange[J]. Acta Petrologica Sinica, 2006,22(11): 2743-2752. (in Chinese with English abstract).
胡云绪,校培喜,高晓峰,等.东昆仑西段—阿尔金地区区域地层划分及地层时空格架建立[J].西北地质,2010,44(4): 152-158.
Hu Y X, Xiao P X, Gao X F, et al. Division and Space-Time Frame Foundation of Regional Stratum inthe Western Sector of East Kunlun and the Altun Region[J] Northwestern Geology,2010,44(4): 152-158. (in Chinese with English abstract).
郝国杰,陆松年,王惠初,等. 柴达木盆地北缘前泥盆纪构造格架及欧龙布鲁克古陆块地质演化[J]. 地学前缘, 2004,11(03):115-122.
Hao G J,Lu S N,Wang H C,et al. The Pre-Devonian tectonic framework in the northern margin of Qaidam basin and geological evolution of Olongbuluck palaeo-block[J]. Earth Sciences Frontiers,2004,11(03):115-122 (in Chinese with English abstract).
贾群子,杨忠堂,肖朝阳,等.祁连山铜金钨铅锌矿床成矿规律和成矿预测[M].北京:地质出版社,2007.
Jia Q Z,Yang Z T, Xiao C Y,et al. Tungsten, lead zinc deposit copper-gold Qilian metallogenic regularity and metallogenic prediction [M]. Geological Publishing House, BeiJing,2007.
刘永顺,于海峰,辛后田,等. 阿尔金山地区构造单元划分和前寒武纪重要地质事件[J].地质通报, 2009,28(10):1430-1438.
Liu Y S,Yu H F, Xin H T,et al. Tectonic units division and Precambrian significant geologic-al events in Altyn Tagh Mountain, China. Geological Bulletin of China, 2009,28(10): 1430-1438 (in Chinese with English abstract).
刘函,王国灿,曹树钊,等. 北阿尔金南华纪双峰式火山岩的发现及构造意义[J].地球科学(中国地质大学学报), 2012,37(5):52-63.
Liu H, Wang G C, Cao S Z,et al. Discovery of Nanhuaian Bimodal Volcanics in Northern Altyn Tagh and Its Tectonic Significance[J]. Earth Science Journal of China University of Geoscicnces. 2012,37(5):52-63 (in Chinese with English abstract).
陆松年. 青藏高原北部前寒武纪地质初探[M].北京:地质出版社. 2002:1-125.
Lu S N. Prinutry Study of Precambrian Geology in the Northern Qinghai-Tibet Plateau[M]. Geological Publishing House, Beijing, 2002:1-125 (in Chinese with English abstract).
李怀坤,陆松年,王惠初,等. 青海柴北缘新元古代超大陆裂解的地质记录—全吉群[J]. 地质调查与研究, 2003,26(01):27-37.
Li HK, Lu SN, Wang HC, et al. Quanji Group: The geological record of the Rodinia superc-ontinent break-up in the Early Neoproterozoic preserved in the northern Qaidam margin, Qinghai, Northwest China[J]. Geological Survey and Research, 2003,26(1): 27-37(in Chinese with English abstract).
潘桂棠,李兴振,王立全,等.青藏高原及邻区大地构造单元初步划分[J].地质通报,2002,21(11): 701-707.
Pan G T,Li X G, Wang L Q, et al. Praliminary divisinon of tartnnicnits of the QingHai-Tibet Plateau and its adjacent regions[J]. Geological Bulletin of China,2002,21(11):701-707(in China with English abstract).
苏建平,胡能高,张海峰,等. 北祁连山西段吊大坂花岗片麻岩的锆石U-Pb年龄及地质意义[J].地质科技情报, 2004,23(03):11-14.
Su J P,Hu N G,Zhang H F,et al. Single-zircon U-Pb dating and Geological signifi-cance of the diaodaban granitic gneiss in the wes-tern segment of north qilian mountains[J]. Geological Science and Technology Information,2004,23(3): 11-14.
邱家骧.秦巴碱性岩[M]. 北京: 地质出版社,1993.
Qiu JX. The alkaline rocks in Qin-Bashan area[M]. Geological Publishing House,Beijing, 1993 (in Chinese).
戚学祥,吴才来,李海兵. 北阿尔金喀孜萨依花岗岩锆石SHRIMP U-Pb定年及其构造意义[J].岩石学报, 2005,21(3): 859-866.
Qi X X, Wu C L, L i H B. SHRIMP U-Pb age of zircons from Kazisayi granite in the northern Alty Tagh mountains and its significations[J]. Acta Petrologica Sircica, 2005, 21(3):859-866(in Chinese with English abstract).
夏林析,夏祖春,任友祥,等.祁连山及邻区火山作用与成矿[M].北京:地质出版社,1996.
Xia L Q X, Xia Z C, Xu X Y,et al.Marine Volcanics NorthQilian [M]. Geological Publishing House,BeiJing, 1996.
许志琴,杨经绥,张建新,等. 阿尔金断裂两侧构造单元的对比及岩石圈剪机制[J].地质学报, 1999, 73(3):193-205.
Xu Z Q, Yang J S, Zhang J X, et al. A Comparison between the Tectonic Units on the Two Sides of the Altun Sinistral Strike-slip Fault and the Mechanism of Lithospheric Shearing [J]. Acta Geologica Sinica, 1999,73(3):193-205. (in Chinese with English abstract)搮?朎旽濰琬攡捑璉漬滻榷揪?獉攮琠瑎椗湋柉?潿暅?栠椧枩框?瀨爎攉猪玅甧牆旂?淊旱瓨愰洃澨犛灦桛楊捝?狘漡挰欨?报攬氠琲猰‰椷測??氩琺由渶??漱男渴琮愼楢湲猾孙?嵮???捈琬慃?偩攠瑊爠潈氬漠杒楥据愠?匠楘測楥捴愠?????????????????????扩牯??楬甠????桡整?婳????甠潎?????敃瑨?慮污????摴楯獮挠畡獮獤椠潂湲?潡湫?瑵桰攠?獦琠牔畨捲瑥略爠敓?慰湥摲?瑯敮捴瑩潮湥楮捴?攠癡潮汤甠瑔楨潥湩?漠晄?瑥桰攠??汮瑡祭湩?味慛杊桝?潇牥潯杬敯湧楩捣?婬漠湊敯孵?嵮???慯牦琠桃?卩据楡??牮潩湶???どぴど????有????戨爲?区椱洶漱渭?????乩潮爠浃慨湩???健?坷楩汴汨椠慅浮?????吠桡敢?慴灲灡汣楴挩愮琼楢潲渾?漿暏?氠態珡攮爠?愮戠汱愦?琔椖濊湶?榹湛摊畝挮琰椃监敦氬礠?挹漹甸瀬氲攳搨‵瀩氺愴猳洸愭?洴愲献猼?獲瀾教捩瑮爠潈洠敆琬爠祚?瑡潮?椠湋?獘椮琠畖?啬?側扩?穮椠牡据潤渠?杨敡潲捡档牴潥湲潩汳潴杩祣?嬠?嵦???桥攠浣楥据慴汲??攠潯汲潯杧祥????ぢ??????????????打牣?坥楮散摥攬渠戱改挹欸?????氵氩攺?倳??漴爴昲用???敃瑨?慮汥??吠桷物整敨?湮慧瑬畩牳慨氠?穢楳牴捲潡湣?猩琠懟滕?搮愠犺搐珿?曟潛牊?售?吰桦?倘戬??甹??昬?琨爱愩挺攠?攲氭攸洸攮渼瑢?愾湚摨?剩???慓渮愠汓祴獵敤獹?孯?崠??敧潩獯瑮慡湬搠慍物摮獥?慡湬搠??数潯慳湩慴汛祊瑝?挠慇汥?剬敯獧敩慣牡捬栠????????????????水???戹爹??爨椱昩昷椲渭?圸????敮氠潃畨獩潮癥慳?????卨栠故敮?卬?剳?攠瑡?慳汴??牣捴栩攮愼湢?挾牙甛獏琬愠沰?攬癵濽?氬畉琮椘澃渿—槑湱?瓳桱旌?渀漉狑瑞棿敾狿滑?姊椏汉杛慊牝渮??爰愨琮漲渰?′唬?倱戨?愊温携″?昱?椳猹漲琮漼灢敲￣教癵椠?搠敐測捚敨?普牧漠浘??攬瑚牨楡瑯愠汇?穊椮牥捴漠湡獬?嬠?嵢??偡爠敲捡慲浥戠牭楥慴湡?剤敥獰敯慳物捴桳???はび?????????????????㈠????扳物??畩摦睩楣条???删???獴潨灥氠潙瑵???ど???条敮漠捭桯牵潮湴潡汩潮朠楩据愠汴?瑥漠潇污歮椠瑓?晵潛牊??椠捍物潮獥潲晡瑬?硄捥数汯孳?嵴???攲爰欱攲氬攳礱??敵潰挮栩爺漳渹漱氭漳朹礲??敢湲琾攠狗???レば??????パ??战狇??楂璩挭梉敿沩氆?????????愭牐獢澚湴??‰匨???楊湝攮犩懳汦?搬攲瀰漰猹椬琲猵?愳温携‵朶永漭戵愷氶?琠敚捨瑡潮湧椠捚?獃攬琠瑇極湯朠獚嬠?崬???据慧搠敂洮椠捓?偒牉敍獐猠???潣湯摮漠湤????????扦爠?偡潢汢汲慯爠摦?偯?????攠潯汰潨杩楯捬?捴桥愠牭慥捬瑡敮牧楥猠瑩楮挠獴?慥渠摮?杲整湨敥瑲楮挠?灬牴潹扮氠敔浡獧?愠獡獮潤挠楩慴瑳攠摧?睯楬瑯桧?瑣桡敬?摩敭癰敬汩潣灡浴敩湯瑮?潛晊?朮爠慁湣楴瑯敲?桐潥獴瑲敯摬?摧攭灩潣獡椠瑓獩?潩晣?琬愠渲琰愰氹甬洲‵愨渳搩※渠椵漶戸椭电洷嬶?崨?卮瀠牃楨湩杮敥牳?????????で?????abstract).
曾建元,杨宏仪,万渝生,等. 北祁连山变质杂岩中新元古代(~775 Ma)岩浆活动纪录的发现:来自SHRIMP锆石U-Pb定年的证据[J]. 科学通报,2006,51(05):575-581.
Zeng J Y,Yang H Y, Wang Y S,et al. Finding of Ncoprotcrozoic (~775Ma) magmatism recorded in the metamorphic complexes from North Qilian orogen: evidence from SHRIMP zircon U-Pb dating. Science Bulletin, 2006,51(5):575-581.
Buick R,Thomett J R, M C Naughton N J,Smith J B.1995.Barley ME.Savage M.Record of emergent continental crust similar to 3.5 billion years agoin the Pilbaracraton of Australia [J].Nature, 375:574-575.
Liu L, Zhou D W, Wang Y, et al. Study and implication of the high-pressure felsic granulite in the Qinling complex of East Qinling[J]. Science in China (Series D), 1996,26(Sup): 60-68.
Liu L, Che Z C, Wang Y, et al. The petrological characters an
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