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地质学报  2009 

东昆仑南缘晚古生代地层组合、大地构造相及大地构造意义

, PP. 1601-1611

Keywords: 东昆仑南缘,陆缘碎屑岩,浊积岩,被动陆缘,二叠纪―三叠纪

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Abstract:

现代大陆边缘盆地研究结果显示,仅根据蛇绿岩分布划分大地构造单元、分析构造演化可能得出误导性结果。而详细的沉积建造分析、结合其他地质资料可以得到更可靠的结论。东昆仑南缘西段1∶25万区域地质调查显示,该区晚古生代地层为一套不含火山岩的碎屑岩-碳酸盐岩组合,从石炭系到三叠系,由北往南沉积建造由陆缘碎屑岩逐步转化为深海浊积岩,显示典型被动陆缘构造环境。这种特点表明,东昆仑南缘蛇绿岩并不代表成熟大洋地壳残片,而是发育于夭折裂谷环境的初始洋盆;其代表位于研究区以南地区的金沙江古特提斯洋盆的北部被动陆缘(现代地理方位)。研究区内不整合覆盖在晚古生代地层之上的侏罗系磨拉石建造代表碰撞造山晚期的上叠前陆盆地,表明印支期造山旋回的结束。

References

[1]  Doglioni C,Carminati E,Scrocca D,Subduction kinematics and dynamic constraints,Earth-Science Reviews,2007.
[2]  Konstantinovskaia E A,Brunel M,Malavieille J,Discovery of the Paleo-Tethys residual peridotites along the Anyemaqen KunLun suture zone (North Tibet),C R Geoscience,2007.
[3]  Matterna F,Schneiderb W,Suturing of the Proto-and Paleo-Tethys oceans in the western Kunlun (Xinjiang,China),Journal of Asian Geology,2000.
[4]  Reid A J,Fowler A P,Phillips D,Wilson C J L,Thermochronology of the Yidun Arc,central eastern Tibetan Plateau:constraints from ~(40)Ar-~(39)Ar K-feldspar and apatite fission track data,Journal of Asian Earth Sciences,2005.
[5]  Reid A J,Wilson C J L,Liu S,Structural evidence for the Permo-Triassic tectonic evolution of the Yidun Arc,eastern Tibetan Plateau,Journal of Structural Geology,2007.
[6]  Robertson A H F,Role of the tectonic facies concept in orogenic analysis and its application to Tethys in the Eastern Mediterranean region,Earth-Science Reviews,1994.
[7]  Roger F,Arnaud N,Gilder S,Tapponnier P Jolivet M Brunel M Malavieille J Xu Z,Geochronological and geochemical constraints on Mesozoic suturing in East Central Tibet,Tectonics,2003.
[8]  She Z B,Ma C Q,Mason R,Li J W Wang G C Lei Y H,Provenance of the Triassic Songpan Ganzi flysch,west China,Chemical Geology,2006.
[9]  Yang J S,Robinson P T,Jiang C F,Ophiolites of the Kunlun Mountains,China and their tectonic implications,Tectonophysics,1996.
[10]  Zhang H F,Parrish R,Zhang L,Xu W C Yuan H L Gao S Crowley Q G,A-type granite and adakitic magmatism association in Songpan Garze fold belt,eastern Tibetan Plateau:Implication for lithospheric delamination,Lithos,2007.
[11]  戴传固.陈厚国.程国繁 新疆且末县黄羊沟地区蛇绿混杂岩带的发现及其意义 [J].-地质通报2002
[12]  姜春发,杨经绥,冯秉贵,朱志直,赵民,柴耀楚,施希德,王怀达,胡金庆,昆仑开合构造,北京:地质出版社,1992.
[13]  贵州省地质调查院,奥依亚依拉克幅1∶25万地质图及说明书,2003.
[14]  李向东,库地北构造带及大地构造意义,乌鲁木齐:疆科技卫生出版社,1995.
[15]  李继亮,孙枢,郝杰,陈海乱,侯泉林,肖文交,论碰撞造山带的分类,地质科学,1992(02).
[16]  刘爱民.戴传固.牟世勇.王敏.黄勇.边申武 奥依亚依拉克幅、羊湖幅地质调查新成果及主要进展 [J].-地质通报2004(5-6)
[17]  潘裕生,区域构造演化与结论,北京:科学出版社,2000.
[18]  任纪舜,中国及邻区大地构造图(附说明书),北京:地质出版社,2002.
[19]  沙淑清.王宗秀.郭通珍.肖伟峰.杨欣德 巴颜喀拉山东段花岗岩锆石SHRIMP定年及地球化学特点 [J].-地球学报2007(03)
[20]  袁超.孙敏.肖文交.周辉.侯泉林.李继亮 原特提斯的消减极性:西昆仑128公里岩体的启示 [J].-岩石学报2003(03)
[21]  张克信.朱云海.殷鸿福.王国灿.陈能松.侯光久 大地构造相在东昆仑造山带地质填图中的应用 [J].-地球科学-中国地质大学学报2004(06)
[22]  Bian Q T,Li D H,Pospelovc I,Yin L M Lia H S Zhao D S Chang C F Luo X Q Gao S L Astrakhantsevc O Chamov N,Age,geochemistry and tectonic setting of Buqingshan ophiolites,North Qinghai-Tibet Plateau,China,Journal of Asian Geology,2004.

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