• 中国出版政府奖提名奖

    中国百强科技报刊

    湖北出版政府奖

    中国高校百佳科技期刊

    中国最美期刊

    留言板

    尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

    姓名
    邮箱
    手机号码
    标题
    留言内容
    验证码

    青藏高原西缘壳幔电性结构与断裂构造: 札达-泉水湖剖面大地电磁探测提供的依据

    金胜 叶高峰 魏文博 邓明 景建恩

    金胜, 叶高峰, 魏文博, 邓明, 景建恩, 2007. 青藏高原西缘壳幔电性结构与断裂构造: 札达-泉水湖剖面大地电磁探测提供的依据. 地球科学, 32(4): 474-480.
    引用本文: 金胜, 叶高峰, 魏文博, 邓明, 景建恩, 2007. 青藏高原西缘壳幔电性结构与断裂构造: 札达-泉水湖剖面大地电磁探测提供的依据. 地球科学, 32(4): 474-480.
    JIN Sheng, YE Gao-feng, WEI Wen-bo, DENG Ming, JING Jian-en, 2007. The Electrical Structure and Fault Feature of Crust and Mantle of Western Tibet Plateau: Based on Results of Magnetotelluric Survey along Profile Zhada-Quanshuihu. Earth Science, 32(4): 474-480.
    Citation: JIN Sheng, YE Gao-feng, WEI Wen-bo, DENG Ming, JING Jian-en, 2007. The Electrical Structure and Fault Feature of Crust and Mantle of Western Tibet Plateau: Based on Results of Magnetotelluric Survey along Profile Zhada-Quanshuihu. Earth Science, 32(4): 474-480.

    青藏高原西缘壳幔电性结构与断裂构造: 札达-泉水湖剖面大地电磁探测提供的依据

    基金项目: 

    国家自然科学基金项目 4040406

    北京市重点学科“地球探测与信息技术” XK104910598

    详细信息
      作者简介:

      金胜(1970-), 男, 副教授, 主要从事地球物理电法勘探的教学与研究工作.E-mail: jinsheng@cugb.edu.cn

    • 中图分类号: P631.3

    The Electrical Structure and Fault Feature of Crust and Mantle of Western Tibet Plateau: Based on Results of Magnetotelluric Survey along Profile Zhada-Quanshuihu

    • 摘要: 青藏高原西缘札达至泉水湖剖面大地电磁探测结果表明, 研究区被雅江缝合带、班公-怒江缝合带划分为3个构造区域, 由南至北分别为喜玛拉雅地体、冈底斯地体和羌塘地体.研究区内普遍存在中下地壳高导层, 高导层的顶面埋深起伏较大, 冈底斯内的高导层埋深大, 羌塘和喜玛拉雅地体内的高导层埋深较浅.在班公-怒江缝合带南侧高导层埋深最大, 班公-怒江缝合带南北两侧高导层埋深存在一个约20km的错动.冈底斯地体内的地壳高导层呈北倾形态, 南羌塘的地壳具有双高导层.沿剖面的上地壳存在多组规模不等、产状不同的电性梯度带或畸变带, 反映了沿剖面地区的缝合带与断裂带分布情况.根据电性结构特征, 推断了雅江缝合带、班公-怒江缝合带以及龙木措、噶尔藏布等主要断裂的构造特征与空间分布.

       

    • 图  1  测线位置

      Fig.  1.  Sketch map of MT profile (0 Line)

      图  2  札达-泉水湖剖面地下介质电性主轴分析结果

      Fig.  2.  Fig2. Geoelectric strike directions of MT profile from Zhada to Quanshuihu

      图  3  札达—泉水湖剖面壳幔二维导电性结构模型

      Fig.  3.  Resistivity model of MT profile from Zhada to Quanshuihu from 2D inversion

      图  4  札达—泉水湖剖面TMTE模式二维非线性共轭梯度反演拟合结果

      Fig.  4.  Fitting results of Zhada Quanshuihu profile from NLCG 2D inversion

    • Egbert, G. D., Booker, J. R., 1986. Robust estimation of geo-magnetic functions. Geophys. Roy. Ast. Soc. , 87: 175-194.
      Gary, W. M., Alan, G. J., 2001. Multisite, multifrequency tensor decomposition of magnetotelluric data. Geophysics, 66 (1): 158-173. doi: 10.1190/1.1444891
      Groom, R. W., Bally, R. C., 1994. Decomposition of magnetotelluric impedance tensor in the present of local three-dimensional galvanic distortion. Geophys. J. Int. , 117: 733-748. doi: 10.1111/j.1365-246X.1994.tb02466.x
      Guo, X. F., Zhang, Y. C., Cheng, Q. Y., et al., 1990. Magnetotelluric studies along Yadong-Golmud geoscience stransect in Qinghai-Xizang plateau. Chinese Academy of Geological Sciences, 21: 191-202 (in Chinese).
      Kong, X. R., Wang, Q. S., Xiong, S. B., 1996. Comprehensive geophysics and the lithosphere structure of western Tibetan plateau. Science in China (Series D), 26: 308-315 (in Chinese).
      Leshou, C., John, R. B., Jones, A. G., et al., 1996. Electrically conductive crust in southern Tibet from INDE-PTH magnetotelluric surveying. Science, 274: 1694-1696. doi: 10.1126/science.274.5293.1694
      Li, S. H., Unsworth, M., Booker, J. R., et al., 2003. Partialmelt or aqueous fluid in the mid-crust of southern Tibet? Constraints from INDEPTH magnetotelluric data. Geophys., 253: 289-304.
      Ma, X. B., Kong, X. R., 2001. The thermal status of Qinghai-Tibet plateau and the differences between the westernand the eastern plateau. Process in Geophysics, 16: 12-19 (in Chinese with English abstract).
      Ma, X. B., Kong, X. R., Yu, S., 1997. Result of magnetotel-luric survey in west Tibetan plateau. Chinese Science Bulletin, 42: 1185-1187 (in Chinese). doi: 10.1360/csb1997-42-11-1185
      Qin, K. Q., Chen, J. H., Liu, D. J., 1994. Electrical structure of the crust and upper mantle of Kunlun mountain and Kala-Kunlun mountain area. Chinese Journal of Geophysics, 37 (2): 193-199 (in Chinese with English ab-stract).
      Unsworth, M. J., Jones, A. G., Wei, W. B., et al., 2005. Crustal rheology of the Himalaya and southern Tibetinferred from magnetotelluric data. Nature, 438: 78-81. doi: 10.1038/nature04154
      Wei, W. B., Dong, H. B., 1997. MT sounding on Tibeta nplateau—Electrical structure of crust and mantle alongprofile of Yadong-Bamucuo. Geoscience, 11 (3): 366-374 (in Chinese with English abstract).
      Wei, W. B., Jin, S., Ye, G. F., et al., 2006. Features of thefaults in center and north Tibetan plateau: Based on results of INDEPTH (Ⅲ)-MT. Earth Science—Journal of China University of Geosciences, 31 (2): 257-265 (in Chinese with English abstract).
      Wei, W. B., Martyn, U., Jones, A., et al., 2001. Detection of widespread fluids in the Tibetan crust by magnetotelluric studies. Science, 292: 716-718. doi: 10.1126/science.1010580
      Xiong, S. B., Liu, H. B., 1997. The crustal structure in west Tibetan plateau. Chinese Science Bulletin, 42: 1309-1312 (in Chinese). doi: 10.1360/csb1997-42-12-1309
      Xiong, S. B., Teng, J. W., Yin, Z. X., 1985. The thickness ofcrust and fluctuating of Moho of Tibetan plateau. Chinese Journal of Geophysics, 28 (Suppl. ): 16-27 (in Chinese with English abstract).
      Zhang, S. Y., Wei, S., Wang, J. Y., et al., 1996. Magnetotel-luric studies of Qiangtang basin in Tibet. Earth Science—Journal of China University of Geosciences, 21 (2): 198-202 (in Chinese with English abstract).
      Zhao, W. J., Nelson, K. D., 1993. Deep seismic reflection evi-dence for continental underthrusting bebeath southern Tibet. Nature, 366 (6455): 557-559. doi: 10.1038/366557a0
      郭新峰, 张元丑, 程庆云, 等, 1990. 青藏高原亚东-格尔木地学断面岩石圈电性研究. 中国科学院院报, 21: 191-202. https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB199002018.htm
      孔祥儒, 王谦身, 熊绍柏, 1996. 西藏高原西部综合地球物理与岩石圈结构研究. 中国科学(D辑), 26: 308-315. doi: 10.3321/j.issn:1006-9267.1996.04.004
      马晓冰, 孔祥儒, 2001. 青藏高原岩石圈热状态及其东西部差异. 地球物理学进展, 16: 12-19. https://www.cnki.com.cn/Article/CJFDTOTAL-DQWJ200103001.htm
      马晓冰, 孔祥儒, 于晟, 1997. 西藏高原西部大地电磁测深探测结果. 科学通报, 42: 1185-1187. doi: 10.3321/j.issn:0023-074X.1997.11.019
      秦可卿, 陈九辉, 刘大建, 1994. 昆仑山脉和喀喇昆仑山脉地区的地壳上地幔电性结构特征. 地球物理学报, 37 (2): 193-199. https://www.cnki.com.cn/Article/CJFDTOTAL-DQWX402.006.htm
      魏文博, 董浩斌, 1997. 西藏高原大地电磁深探测———亚东-巴木错沿线地区壳幔电性结构. 现代地质, 11 (3): 366-374. https://www.cnki.com.cn/Article/CJFDTOTAL-XDDZ703.017.htm
      魏文博, 金胜, 叶高峰, 等, 2006. 西藏高原中、北部断裂构造特征: INDEPTH (Ⅲ) -MT观测提供的依据. 地球科学———中国地质大学学报, 31 (2): 257-265. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200602016.htm
      熊绍柏, 刘宏兵, 1997. 青藏高原西部的地壳结构. 科学通报, 42: 1309-1312. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB199712020.htm
      熊绍柏, 滕吉文, 尹周勋, 1985. 西藏高原地区的地壳厚度和莫霍界面的起伏. 地球物理学报, 28 (增刊): 16-27. https://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGYJ198912005041.htm
      张胜业, 魏胜, 王家映, 等, 1996. 西藏羌塘盆地大地电磁研究. 地球科学———中国地质大学学报, 21 (2): 198-202. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX199602018.htm
    • 加载中
    图(4)
    计量
    • 文章访问数:  2983
    • HTML全文浏览量:  558
    • PDF下载量:  235
    • 被引次数: 0
    出版历程
    • 收稿日期:  2007-04-12
    • 刊出日期:  2007-07-25

    目录

      /

      返回文章
      返回