全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
地质通报  2009 

西藏拉萨地块西部扎布耶茶卡火山岩的成因与意义

, PP. 1730-1740

Keywords: 碰撞后,超钾质岩石,地球化学,扎布耶茶卡,青藏高原

Full-Text   Cite this paper   Add to My Lib

Abstract:

近年来在青藏高原南部拉萨地块不断发现的碰撞后钾质和超钾质岩石,对于揭示印度与亚洲大陆碰撞以来高原岩石圈的深部作用与过程发挥了重要作用。分布在拉萨地块西部扎布耶茶卡东岸的钾质和超钾质火山岩主体喷发时代为中新世(约16Ma),出露面积约为400km2,火山岩持续喷发0.45Ma,估算的喷发速率约为0.26×10-3km3/a。岩石包括3种类型,第一类(约16Ma)为超钾质的粗面安山岩,SiO2低(55%~58%),高Fe2O3、MgO、TiO2;第二类(约27Ma)为钾玄质的响岩和粗面岩;第三类是高SiO2的钾玄质―超钾质粗面岩(SiO2=59%~64%)和流纹岩(SiO2=69%)。岩石显示轻稀土元素、大离子亲石元素高度富集和部分高场强元素亏损的特征,部分中酸性岩石显示高Sr低Y的埃达克岩的属性。岩石的Sr-Nd-Pb-O同位素组成与拉萨地块典型的超钾质岩石明显不同,显示亲青藏高原北部地球化学省的地球化学特征。扎布耶茶卡不同类型的岩浆代表了碰撞后高原南部岩石圈减薄作用导致的岩石圈不同层次的岩石部分熔融的产物。

References

[1]  Molnar P.Tapponnier P Active tectonics of Tibet [J].-Journal of Geophysical Research1978
[2]  England P C.Houseman G Extension during continental convergence,with application to the Tibetan plateau [J].-Journal of Geophysical Research1989
[3]  Chung S L.Lo C H.Lee T Y Diachronous uplift of the Tibetan Plateau starting 40 Myr ago [J].-Nature1998
[4]  McCaffery R.Nabelek J Role of oblique convergence in the active deformation of the Himalaya and southern Tibet plateau [J].-Geology1998
[5]  Yin A.Kapp P A.Murphy M A Significant late Neogene east-west extension in northern Tibet [J].-Geology1999
[6]  赵志丹.莫宣学.董国臣 青藏高原Pb同位素地球化学及其意义 [J].-现代地质2007(02)
[7]  刘登忠.陶晓风.马润则 中华人民共和国1:25万措勤县幅区域地质调查报告 [J].-2003
[8]  张双全 西藏冈底斯中段新生代碰撞后岩浆作用特征及其大地构造意义的研究(北京大学地质学系博士后研究报告) [J].-1998
[9]  Miller C.Schuster R.Klotzli U Post-collisional potassic and ultrapotassic magmatism in SW Tibet:Geochemical and Sr-Nd-Pb-O isotopic constraints for mantle source characteristics and petrogenesis [J].-Journal of Petrology1999(09)
[10]  Coulon C.Maluski H.Bollinger C Mesozoic and Cenozoic volcanic rocks from central and southern Tibet:~(39)Ar-~(40)Ar dating,petrological characteristics and geodynamical significance [J].-Earth and Planetary Science Letters1986
[11]  Turner S.Hawkesworth C.Liu J Timing of Tibetan uplift constrained by analysis of volcanic rocks [J].-Nature1993
[12]  Turner S.Arnaud N.Liu J Post-collision,shoshonitic volcanism on the Tibetan Plateau:Implications for convective thinning of the lithosphere and the source of ocean island basalts [J].-Journal of Petrology1996
[13]  Zhao Z.Mo X.Zhang S Geochemistry of the Pliocene shoshonitic rocks from Oiyug basin,central Tibet [J].-Earth Sciences Frontiers2000(Suppl)
[14]  赵志丹.莫宣学.张双全 西藏中部乌郁盆地碰撞后岩浆作用--特提斯洋壳俯冲再循环的证据 [J].-中国科学d辑2001(增刊)
[15]  周肃 西藏冈底斯岩浆岩带及雅鲁藏布蛇绿岩带关键地段同位素年代学研究 [J].-北京:中国地质大学(北京)2002
[16]  周肃.莫宣学.赵志丹 西藏南部羊应乡后碰撞火山岩~(40)Ar-~(39)Ar年龄及其地质意义 [J].-自然科学进展2004(12)
[17]  Williams H.Turner S.Kelley S Age and composition of dikes in Southern Tibet:New constraints on the timing of east-west ex tension and its relationship to postcollisional volcanism [J].-Geology2001
[18]  Williams H M.Turner S P.Pearce J A Nature of the source regions for post -collisional,potassic magmatism in southern and northern Tibet from geochemical variations and inverse trace element modelling [J].-Journal of Petrology2004
[19]  丁林.张进江.周勇 藏北超钾质及钠质火山岩的岩石学与地球化学特征:高原岩石圈演化的记录 [J].-岩石学报1999(03)
[20]  Ding L.Kapp P.Zhong D Cenozoic volcanism in Tibet:Evidence for a transition from oceanic to continental subduction [J].-Journal of Petrology2003(10)
[21]  Guo Z.Wilson M.Liu J Post-collisional,potassic and ultrapotassic magmatism of the northern Tibetan Plateau:Constraints on characteristics of the mantle source,geodynamic setting and uplift mechanisms [J].-Journal of Petrology2006
[22]  Gao Y.Hou Z.Kamber B S Lamproitic rocks from a continental collision zone:Evidence for recycling of subducted Tethyan oceanic sediments in the mantle beneath southern Tibet [J].-Journal of Petrology2007
[23]  Gao Y.Wei R.Ma P Post-collisional ultrapotassic volcanism in the Tangra Yumco -Xuruco graben,south Tibet:Constraints from geochemistry and Sr-Nd-Pb isotope [J].-Lithos2009
[24]  赵志丹.莫宣学.Nomade S 青藏高原拉萨地块碰撞后超钾质岩石的时空分布及其意义 [J].-岩石学报2006(04)
[25]  赵志丹.莫宜学.孙晨光 青藏高原南部地幔包体的发现及其意义 [J].-岩石学报2008(02)
[26]  孙晨光.赵志丹.莫宣学 青藏高原拉萨地块西部中新世赛利普超钾质岩石的地球化学与岩石成因 [J].-岩石学报2007(11)
[27]  孙晨光.赵志丹.莫宣学 青藏高原西南部赛利普超钾质火山岩富集地幔源区和岩石成因:锆石U-Pb年代学和Hf同位素制约 [J].-岩石学报2008(02)
[28]  Zhao Z.Mo X.Dilek Y Geochemical and Sr-Nd-Pb-O isotopic compositions of the post-collisional ultrapotassic magmatism in SW Tibet:Petrogenesis and implications for India intra-conti nental subduction beneath southern Tibet [J].-Lithos2009
[29]  马润则.刘登忠.陶晓风 西藏措勤地区发现第三纪富钾岩浆岩 [J].-地质通报2002(11)
[30]  马润则.刘登忠.桃晓风 西藏措勤地区布嘎寺碱性正长岩的特征及构造环境 [J].-地质通报2007(04)
[31]  廖思平.陈振华.罗小川 西藏当惹雍错地区白榴石响岩的发现及地质意义 [J].-地质通报2002(11)
[32]  赵志丹.莫宣学.罗照华 印度-亚洲俯冲带结构--岩浆作用证据 [J].-地学前缘2003(03)
[33]  Spicer R A.Harris N B W.Widdowson M Constant elevation of southern Tibet over the past 15 million years [J].-Nature2003
[34]  丁林.岳雅慧.蔡福龙 西藏拉萨地块高镁超钾质火山岩及对南北向裂谷形成时间和切割深度的制约 [J].-地质学报2006(09)
[35]  Nomade S.Renne P R.Mo X Miocene volcanism in the Lhasa block:spatial trends and geodynamic implications [J].-Earth Planetary Science Utters2004
[36]  Chung S L.Chu M F.Zhang Y Tibetan tectonic evolution inferred from spatial and temporal variations in post-collisional magmatism [J].-Earth-Science Reviews2005
[37]  陈建林.许继峰.康志强 青藏高原西部措勤县中新世布嘎寺组钾质火山岩成因 [J].-岩石学报2006(03)
[38]  Mo X.Zhao Z.Deng J Petrology and geochemistry of post-collisional volcanic rocks from the Tibetan plateau:Implications for lithosphere heterogeneity and collision -induced asthenospheric mantle flow [J].-2006
[39]  王保弟.许继峰.张兴国 青藏高原西部赛利普中新世火山岩源区:地球化学及Sr-Nd同位素制约 [J].-岩石学报2008(02)
[40]  西藏自治区地质矿产局 西藏自治区区域地质志 [J].-北京:地质出版社1993
[41]  Ferriz H.Mahood G A Eruption Rates and Compositional Trends at Los Humeros Volcanic Center Puebla,Mexico [J].-Journal of Geophysical Research1984(B10)
[42]  Renne R R.Basu A R Rapid Eruption of the Siberian Traps Flood Basalts at the Permo-Triassic Boundary [J].-Science1991
[43]  DePaolo D J.Daley E E Neodymium isotopes in basalts of the southwest basin and range and lithospheric thinning during continental extension [J].-Chemical Geology2000
[44]  Foley S F.Venturelli G.Green D H The ultrapotassic rocks:characteristics,classification and constraints for petrogenetic models [J].-Earth-Science Reviews1987
[45]  Le Maitre R W A classification of igneous rock and glossary of terms [J].-Blackwell Science Publication,Oxford1989
[46]  Boynton W V Geochemistry of the rare earth elements:meteorite studies [J].-Elsevier1984
[47]  Sun S.McDonough W F Chemical and isotopic systematics of oceanic basalts:implications for mantle composition and processes [J].-Special Publications1989
[48]  莫宣学.赵志丹.DePaolo D 青藏高原拉萨地块碰撞-后碰撞岩浆作用的三种类型及其对大陆俯冲和成矿作用的启示:Sr-Nd同位索证据 [J].-岩石学报2006(04)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133