新疆阿尔泰东部新生代玄武岩的地球化学特征与地质意义
Geochemical characteristics and geologic implications of Cenozoic basalts, east Altai, Xinjiang
-
摘要: 新疆阿尔泰东部哈拉乔拉出露有新生代玄武岩,K—Ar法测得玄武岩的年龄在10~20Ma,地球化学分析结果表明哈拉乔拉玄武岩具有高TiO2含量、高钾富碱的特点,属于典型的橄榄玄粗岩系列;强烈富集不相容元素和轻稀土元素,显示出源区富集的特点。(^87Sr/^86Sr).为0.704432~0.704538,(^143Nd/^144Nd)i为0.512641~0.512779,εNd(t)为0.29~1.03,其Sr-Nd同住素特征和地球化学特征都与洋岛玄武岩(OIB)相似。La/Nb(0.765~0.823)、Nb/U(35.02~52.01)等不相容元素的比值指示了源区中可能存在少量循环地壳物质。综合对比南天山托云等地区新生代玄武岩,中亚地区的地球化学性质相似的新生代火山岩分布零星,空间上与大型断裂相对应,不应是前人地幔柱成因的观点。本文结合中亚地区古生代地壳的演化特点,提出中亚地区的新生代类OIB型玄武岩来源于中亚地区已被改造的富集地幔。
-
Key words:
- Altai /
- Cenozoic basalts /
- geochemistry /
- tectonic setting /
- enriched mantle
-
[1] Afonichev NA and Vlasov HG.1984. Geologischeskaya karta Kazakhstana i Sredney Azii (so stratigraficheskimi kolonkami),Masshtab:1:1,500,000 (Geological map of Kazakhstan and Middle Asia(with stratigraphic columns),scale 1:1,500,000)
[2] 柏美祥,罗福忠,尹光华,向志勇,沈军,石树中,丁德轩,郭恒祖,阮成雯.1996.新疆可可托海-二台活动断裂带.内陆地震,10(4),319-329
[3] 邓万明,1978.藏北第四纪火山岩岩石学和岩石化学初步研究.地质学报.52(2):148-162
[4] Arai S and Takahashi N.1989. Formation and compositional variation of phlogopites in the Horoman peridotite complex,Hokkaido,Northern Japan:implication for origin and fractionation of metasomatic fluids in the upper mantle.Contributions to Mineralogy Petrology,101(2):165-175
[5] Bai MX,Luo FZ,Yin GH,Xiang ZY,Sheng J,Shi SZ,Ding DX,Guo HZ and Ruan CW.1996. Kokotokay-Ertai active fault zone in Xinjiang.Inland Earthquake,10(4):319 -329 (in Chinese with English abstract)
[6] 郭召杰,马瑞士,郭令智,施央申.1993.新疆东部三条蛇绿混杂岩带的比较研究.地质论评,39(3):236-247
[7] 郭召杰,张志诚,吴朝东,方世虎,张锐.2006a.中、新生代天山隆升过程及其与准噶尔、阿尔泰山比较研究.地质学报,80(1):1-15
[8] Chen B and Jahn BM.2002. Geochemical and isotopic studies of the sedimentary and granitic rocks of the Altai orogen of northwest China and their tectonic implications.Geology Magazine,129:1-13
[9] 郭召杰,陈正乐,舒良树,李胜祥.2006b.中国西部中亚型造山带中新生代陆内造山过程与砂岩型铀矿成矿作用.北京:地质出版社
[10] Coffin MF and Eldholm O.1994. Large igneous provinces:Crustal structure,dimensions,and external consequences.Rev Geophys,32:1236
[11] Cunningham D,Owen LA,Snee LW and Li JL.2003. Structural framework of a major intracontinental orogenic torminstion zone,the easternmost Tien Shan,China.Journal of the Geological Society,London,160:575-590
[12] 何国琦,韩宝福,岳永君等.1990.中国阿尔泰造山带的构造分区和地壳演化.新疆地质科学,2:9-20
[13] Deng WM.1978. A preliminary study on the petrology and petrochemistry of the quarternary volcanic rocks of Northern Tibet autonomous region.Acta Geologica Sinica,52(2):148 -162 (in Chinese with English abstract)
[14] Dungan MA,Lindstrom MM,Mcmiland NJ et al.1986. Open system magmatic evolution of the Taos Plateau volcanic field,northern New Mexico,1:The petrology and geochemistry of the Servillets basalts.J.Geophys.Res.,91:5999-6028
[15] Fabries J,Bodinier JL,Dupuy L,Lorand JP and Benkerrou C.1989. Evidence for modal metasomatism in the orogenic sipnel lherzolite body from Caussou (Northeastern Pyrenees,France).Journal of Petrology,30(1):199 -228
[16] Guo ZJ,Ma RS,Guo LZ and Shi YS.1993. A comparative study on three ophiolitic mélange belts in eastern Xinjiang.Geological Review,39(3):236 -247 (in Chinese with English abstract)
[17] Guo ZJ,Zhang ZC,Wu CD,Fang SH and Zhang R.2006a.The Mesozoic and Cenozoic exhumation history of Tianshan and comparative studies to the Junggar and Altai mountains.Acta Geologica Sinica,80(1):1-15 (in Chinese with English abstract)
[18] Guo ZJ,Chen ZL,Shu LS,Li SX.2006b.Mesozoic-Cenozoic intracontinental orogeny and mineralization of the sandstone-type uranium deposit in the central Asian orogenic belt,Northwest China.Beijing:Geological Publishing House (in Chinese)
[19] Han BF,Wang SG,Jahn BM,Hong DW,Kagami H and Sun YL.1997. Depleted-mantle magma source for the Ulungur River A-type granites from north Xinjiang,China:Geochemistry and Nd-Sr isotopic evidence,and implication for Phanerozoic crustal growth.Chemical Geology,138:135-159
[20] Han BF,Wang XC and He GQ.1999. Discovery of mantle and lower crust xenoliths from Early Cretaceous volcanic rocks of southwestern Tianshan,Xinjiang.Chinese Sciences Bulletin,44(12):1119 -1123
[21] Hauri EH and Hart SR.1993. Re-Os isotopic systematics of HIMU and EMII oceanic island basalts from the south Pacific Ocean.Earth and Planetary Science Letters,104:398 -416
[22] He GQ,Han BF,Yue YJ et al.1990. Tectonic division and crustal evolution of Altsi orogenic belt in China.Geoscience of Xinjiang,2:9-20 (in Chinese with English abstract)
[23] Hofmann AW.1997. Mantle geochemistry:The message from oceanic volcanism.Nature,385:219 -229
[24] Holm PM and Munksgaard NC.1982. Evidence for mantle metasomatism:an oxyen and strontium isotope study of the Vulsinian District,Central Italy.Earth and Planetary Science Letters,60(3):376-388
[25] Jahn BM,Wu FY and Chen B.2000. Granitoids of the Central Asian Orogenic Belt and continental growth in the Phanerozoic Trans.Royal Soc.Edinburgh:Earth Science,91:181-193
[26] Ji JQ,Han BF,Zhu MF,Chu ZY and Liu YL.2006. CretaceousPaleogene alkaline magmatism in Tuyon basin,southwest Tianshan Mountains:geochronology,petrology and geochemistry.Acta Petrologica Sinica,22(5):1324 -1340(in Chinese with English abstract)
[27] Kosarev GL,Petersen NV and Vinnik LP.1993. Receiver functions for the Tien Shan analog broadband network; contrasts in the evolution of structure across the Talasso Fergano Fault.J.Geophys.Res.,98:4437-4448
[28] Laurent-Charvet S,Charvet J,Shu LS,Ma RS and Lu HF.2002. Palaeozoic late collisional strike-slip deformations in Tianshan and Altay,Eastern Xinjiang,NW China.Terra Nova,14(4):249-256
[29] Le Bas MJ,Le Maitre RW,Streckeisen A and Zanettin B.1986. A chemical classification of volanic rocks based on the total alkalisilica diagram.Journal of Petrology,27:745 -750
[30] Li XH,Liu Y,Tu XL,Hu GQ and Zeng W.2002. Precise determination of chemical composition in silicate rocks using ICPAES and ICP-MS:A comparative study of sample digestion techniques of alkali fusion and acid dissolution.Geochimica,31 (3):289-294(in Chinese with English abstract)
[31] Li JY,Xiao XC,Tang YQ,Zhao M,Zhu BQ and Feng YM.1990. Main characteristics of late Paleozoic plate tectonics in the southern part of East Junggar,Xinjiang.Geological Review,36(4):305-316 (in Chinese with English abstract)
[32] Li JY,He GQ,Xu X,Li HQ,Sun GH,Yang TN,Gao LM and Zhu ZX.2006. Crustal Tectonic Framework of Northern Xinjiang and Adjacent Regions and Its Formation.Acta Geologica Sinica,80(1):148 -168 (in Chinese with English abstract)
[33] Liu JQ and Maimaiti YM.1990. The distribution and K-Ar ages of Quaternary volcanoes of western Kunlun.Science in China (series B),2:180-187 (in Chinese with English abstract)
[34] Liu Y,Liu HC,Li XH.1996. Simultaneous and precise determination of 40 trace elements in rock samples using ICP-MS.Geochimica,25 (6):552-556 (in Chinese with English abstract)
[35] Liu YL,Miao GJ and Huang BL.2003. Submitting terms and pretreatment of K-Ar and Ar-Ar dating samples.Rock and Mineral Analysis,22(4):297 -299 (in Chinese with English abstract)
[36] Ma RS,Wang CY,Ye SF.1993. The outline of plate tectonics and crustal evolution in the eastern Tianshan belt,China.Nanjing:Publishing House of Nanjing University,1 -225 (in Chinese)
[37] Makeyeva LI,Vinnik LP and Roecker SW.1992. Shear-wave splitting and small-scale convection in the continental upper mantle.Nature,358:144-147
[38] Maury RC,Defant MJ and Joron JL.1992. Metasomatism of the sub-arc mantle inferred from trace elements in Philippine xenoliths.Nature,360(6405):661 -663
[39] Meen JK,Eggler DH and A yers JC.1989. Experimental evidence for very low solubility of rare-earth elements in CO2-rich fluids at mantle condition.Nature,340(6231):301-303
[40] Morgan WJ.1971. Convection plumes in the lower mantle.Nature,230:42-43
[41] Qiao GS.1988. Normalization of isotopic dilution analysis.Science in China(Series A),31:1263-1268
[42] Rickwood PC.1989. Boundary lines within petrologic diagrams which use oxides of major and minor elements.Lithos,22:247-263
[43] Roden MF and Murthy VK.1985. Mantle metasomatism.Annual Review of Earth and Planetary Sciences,13:269 -296
[44] Sang HQ,Qiu J,Wang SS and Hu SL.1996. Determination of K-Ar ages on some young basalts by IDMS.Journal of Chinese Mass Spectrometry Society,17 (4):19-24 (in Chinese with English abstract)
[45] Schiano P,Clocchiatti R and Joron JL.1992. Melt and fluid inclusions in basalts and xenoliths from Tahaa Island,Society Archipelago:evidence for a metazomatized upper mantle.Earth and Planetary Science Letters,111(1):69-82
[46] Shen J,Li YZ,Wang YP and Song FM.2003. The active faults in Altai Moutains.Earth Science Frontiers,10 (Suppl):132-141 (in Chinese with English abstract)
[47] Sobel ER and Arnaud N.2000. Cretaceous-Paleogene basalcic rocks of the Tuyon basin,NWChina and the Kyrgyz Tian Shan:The trace of a small plume.Lithos 50:191 -215
[48] Sun SS and McDonough WE.1989. Chemical and isotopic systematics of oceanic basalts:Implications for mantle composition and processes.In:Saunders AD and Norry MJ (eds).Magmatism in the Ocean Basins.Geological Society of London,Special Publication,42:13-345
[49] Tayor SR and McLennan SM.1985. The continental crust:its composition and evolution.Oxford:Blackwell
[50] Ujike O.1988. Probable mineralogic control on the mantle metasomatic fluid composition beneath the Northeast Japan arc.Geochimica et Cosmochimica Acta,52(8):2037 -2046
[51] Wang DH and Li TD.2001. Geochemistry and environment of the Cenozoic basalts in Halaqiaola,east Altai Moutains.Geotectonica et Metallogenia,25 (3):282-289 (in Chinese with English abstract)
[52] Wu B,He GQ,Wu TR,Li HJ and Luo HL.2006. Discovery of the Buergen ophiolitic mélange belt in Xinjiang and its tectonic significance.Geology in China,33(3):476 -486(in Chinese with English abstract)
[53] Xiao WJ,Windley B F,Yan QR,Qin KZ,Chen HL,Yuan C,Sun M,Li JL and Sun S.2006. SHRIMP Zircon Age of the Aermantai Ophiolite in the North Xinjiang Area,China and its tectonic implications.Acta Geologica Sinica,80(1):32-37(in Chinese with English abstract)
[54] Xiao XC,Tang YQ,Li JY,Zhao M,Feng YM,Zhu BQ.1990. On the tectonic evolution of the northern Xinjiang,Northwest China,Geoscience of Xinjiang (1).Beijing:Geological Publishing House,47-68 (in Chinese with English abstract)
[55] Zhang QF,Hu AQ,Zhang GX,Fan SK,Pu ZP and Li QX.1994. Evidence from isotopic age for presence of Mesozoic-Cenozoic magmatic activities in Altai region,Xinjiang.Geochimica,23 (3):269 -280 (in Chinese with English abstract)
[56] Zhang ZC,Yan SH,Chen BL,Zhou G,He YK,Chai FM,He LX and Wan YS.2006. SHRIMP zircon U-Pb dating for subduction-related granitic rocks in the northern part of east Junggar,Xinjiang.Chinese Science Bulletin,51 (8):952 -962
[57] Zheng JP,Lu FX,O\'Reilly SY,Luo ZH.2001. Trace-element of Tuoyun clinopyroxene:Implication for the deep processes of lithospheric mantle beneath the Tianshan,west China.Chinese Science Bulletin,46(14):1206 -1211
[58] Zheng JP,Luo ZH,Yu CM,Yu XL,Zhang RS,Lu FX and Li HM.2005. Geochemistry and zircon U-Pb ages of granulite xenolith from Tuoyun basalts,Xinjuang:Implications for the petrogenesis and the lower crustal nature beneath the southwestern Tianshan.Chinese Science Bulletion,50 (12):1241-1251
[59] Zhu YF,Zeng YS and Gu LB.2006. Geochwmistry of the rate metalbearing pegmatitie no.3 vein and relates granites in the Keketuohai region,Altay mountains,northwest China.Journal of Asian Earth Sciences,27:61 -77
[60] Zindler A and Hart S R.1986. Chemical geodynamics.Annu.Rev.Earth Plant.Science,14:493 -571
计量
- 文章访问数: 7016
- PDF下载数: 6962
- 施引文献: 0