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  2007 

青藏高原各地体的地壳-上地幔结构及其东西向的变化特征

, PP. 1304-1309

Keywords: 青藏高原地震探测接收函数地体东西向特征

Full-Text   Cite this paper   Add to My Lib

Abstract:

青藏高原是由多个地体拼合而成的,在印度板块向北俯冲的长期作用下,各地体被挤压.地壳缩短,高原隆升。尽管在北北东向挤压作用下发生了高原的近南北向的断裂活动,但各地体本身的结构整体上保持相对稳定,不仅地壳浅部的地层、岩石、古生物保持着各自的特征,而且深部Moho面的变化和岩石圈的特征也是相似的。青藏高原的相距500km以上的2条宽频地震探测剖面的接收函数结果证实:高喜马拉雅地体、特提斯喜马拉雅地体、冈底斯地体、羌塘地体和巴颜喀拉地体在东西方向上保持着相近的速度特征。这充分说明.印度板块向北俯冲与青藏高原碰撞,引发各地体碰撞造山与高原隆升是地壳和岩石圈的整体构造运动.高原各地体,至少高原腹地仍然保持着大致相同的深部结构.Moho面、岩石圈底界面的深度和产状变化不大。

References

[1]  Him A, Nercessian A, Sapin M, et al. Lhasa block and bordering structures-a continuation ofa 500-kn Moho traverse through Tibet[J].Nature, 1984,307:25-27.
[2]  Him A, Lepine J C, Jobert G, et al. Crustal structure and variability of the Himalayan boarder of Tibet[J]. Nature, 1984,307:23-25.
[3]  Galve A, Him A, Jiang M, et al. Modes of raising northeastern Tibet probed by explosion seismology[J]. Earth Planet. Sci. Lett., 2002,203: 35-43.
[4]  Galve A, Sapin M, Him A, et al. Complex images of Moho and variation of Vp/Vs across the Himalaya and South Tibet, from a joint receiver-function and wide-angle-reflection approach[J]. Geophys. Res. Lett., 2002,29(24): 2182, doi:10.1029/2002GL015611.
[5]  Hirn A, Jiang M, Sapin M, et al. Seismic anisotropy as an indicator of mantle flow beneath the Himalayas and Tibet [J]. Nature, 1995, 375: 571-574.
[6]  钱辉 姜枚 等.天然地震接收函数揭示的青藏高原东部地壳结构[J].地震学报,:.
[7]  Jiang M, Galve A, Hirn A, et al. Crustal thickening and variations in architecture from the Qiadam basin to the Qiang Tang (North-Central Tibet) from wide-angle reflection seismology[J]. Tectonophys., 2005,412:121-140.
[8]  Kind R, Yuan X, Saul J, et al. Seismic images of crust and upper mantle beneath Tibet: evidence for Eurasian plate subduction[J]. Science, 2002, 298:1219-1221.
[9]  Him A, Sapin M, Lepine J C, et al. Increase in melt fraction along a south-north teaverse below the Tibetan Plateau: Evidence from seismology[J]. Tectonophys., 1997,273:17-30.
[10]  姜枚 Poupi.,G.用天然地震探测青藏高原中部地壳,上地幔结构[J].地球物理学报,:.
[11]  Kind R, Yuan X, Saul J, et al. Seismic images of crust and upper mantle beneath Tibet: evidence for Eurasian plate subduction[J]. Science, 2002, 298:1219-1221.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133