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1. 国家305项目办公室
2. 南京地质矿产研究所
3. 北京地质矿产研究院
Published:2010
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[1]李月臣,董永观,丁汝福,等.新疆阿勒泰青河地区玛因鄂博二叠纪辉长岩年龄、地球化学特征及地质意义[J].新疆大学学报(自然科学版),2010,27(04):493-498.
李月臣, 董永观, 丁汝福, et al. 新疆阿勒泰青河地区玛因鄂博二叠纪辉长岩年龄、地球化学特征及地质意义[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 2010, 27(4): 493-498.
新疆阿勒泰青河县玛因鄂博断裂带内
发育大量的辉长岩岩脉(株)
辉长岩侵入到前寒武纪片麻岩和前二叠纪的不同类型花岗岩中
主要的岩石类型包括含长辉石岩、斑状细粒含长辉石岩、辉长岩以及少量的粗粒辉长岩.锆石SHRIMPU-Pb年龄表明这些辉长岩形成时代为272.5±2.4Ma.系统的元素地球化学及同位素地球化学研究表明
这些辉长岩具有高Mg-Fe、低Ti、低碱度特征
轻稀土及大离子亲石元素轻微富集
具有高的Nd初始值.上述特征表明
玛因鄂博辉长岩原始岩浆来自被交代的极度亏损的岩石圈地幔高度部分熔融所形成的拉斑质玄武岩浆.二叠纪辉长岩与阿勒泰南缘喀拉通克含Cu-Ni硫化物矿超镁铁—镁铁杂岩和大量的二叠纪花岗岩形成时代一致
是塔里木二叠纪大火成岩省在阿勒泰南缘的岩浆岩响应.
Gabbroic intrusions widely occur along the Erqis belt in Qinghe area
southern of Altaid.They intrude the Pre-Permian granites and Precambrian metamorphic rocks and main rock types include finegrained plagioclase-bearing pyroxenite
gabbro and minor coarse-grained gabbro.Zircon SHRIMP U-Pb age indicates that these gabbros crystallized at ca.273 Ma.Geochemistry analyzes exhibit they enrich in Mg
Al
Fe and depleted in Ti and total alkali.Combing with their Sr-Nd istopic characteristics
we suggest that they derived from high-degree partial melting of a pre-metasomatized extremely depleted lithospheric mantle source.Integrating the voluminous Permian basaltic igneous activity in Tarim Block and the western part of the Central Asian Orogenic Belt
the Mayinebo gabbros are igneous product of the Permian Tarim mantle plume.
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韩宝福,何国琦,王式洸.后碰撞幔源岩浆活动、底垫作用及准噶尔盆地基底的性质[J].中国科学(D),1999,42(2):113-119.
王涛,洪大卫,童英,等.中国阿尔泰造山带后造山喇嘛昭花岗岩体锆石SHRIMP年龄、成因及陆壳垂向生长意义[J].岩石学报,2005,21(3):640-650.
周刚,张招崇,何斌,等.新疆北部玛因鄂博断裂带中片麻岩锆石U-Pb SHRIMP定年及其地质意义[J].中国地质,2006,33(6):13-20.
周刚,张招崇,王新昆,等.新疆玛因鄂博断裂带中花岗质糜棱岩锆石U-Pb SHRIMP和黑云母40Ar-39Ar年龄及意义[J].地质学报,2007a,81(3):359-369.
周刚,秦纪华,张招崇,等.新疆富蕴县苏普特一带双峰式火山岩的发现及其地质意义[J].地质论评,2007b,53(3):1-12.
张传林,周刚,王洪燕,等.塔里木及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):1-16.
Chen B,Jahn B.Genesis of post-collisional granitoids and basement nature of the Junggar Terrane,NW China:Nd-Sr isotope and trace element evidence[J].Journal of Asian Earth Sciences,2004,3:691-703.
Borisenko A S,Sotnikov V I,Izokh A E,et al.Permo-Triassic mineralization in Asia and its relation to plume magmatism[J].Russian Geology and Geophysics,2006,47:166-182.
Zhang C L,Li X H,Li Z X,et al.A Permian layered intrusive complex in the western Tarim Block,northwestern China:product of a ca.275Ma mantle plume[J].Journal of Geology,2008,116:112-128.
Zhang C L,Li Z X,Li X H,et al.2010a.A Permian large igneous province in Tarim and Central Asian Orogenic Blet(CAOB),NW China:Results of a ca.275Ma mantle plume[J].GSA Bulletin,2010a,(doi:10.1130/B30007.1).
Xu Y G,Chung S L,Jahn B M,et al.Petrologic and geochemical constraints on the petrogenesis of Permian-Triassic Emeishan flood basalts in southwestern China[J].Lithos,2001,58:145-168.
Pisarevsky S A,Gladkochub D P,Donskaya T A,et al.Palaeomagnetism and geochronology of mafic dykes in south Siberia,Russia:the first precisely dated Early Permian palaeomagnetic pole from the Siberian craton[J].Geophys J Int,2006,167:649-658.
Sun SS,McDonough W F.Chemical and isotopic systematics of oceanic basalt:implication for mantle composition and Processes,In:Saunders A D and Norry M J(ed.);Magmatism in the ocean basin[J].Geol Soc London Spec Publ,1989,42:528-548.
Zhou M F,Lesher C M,Yang Z X,et al.Geochemistry and petrogenesis of270Ma 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,2004,209:233-257.
Mao J W,Pirajno F,Zhang Z H,et al.A review of the Cu-Ni sulphide deposits in the Chinese Tianshan and Altay orogens(Xinjiang Autonomous Region,NW China):Principal characteristics and ore-forming processes[J].Journal of Asian Earth Sciences,2008,32:184-203.
Pirajno F,Mao J W,Zhang Z C,et al.The association of mafic-ultramafic intrusions and A-type magmatism in the Tian Shan and Altai orogens,NW China:Implications for geodynamic evolution and potential for the discovery of new ore deposits[J].Journal of Asian Earth Sciences2008,32:165-183.
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