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地球学报  2008 

国际合作INDEPTH项目横穿青藏高原的深部探测与综合研究

DOI: 10.3975/cagsb.2008.03.07

Keywords: 深部探测,青藏高原,INDEPTH,综合研究,大陆动力学

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Abstract:

国际合作青藏高原与喜马拉雅深部剖面探测(INDEPTH)计划自1992年开展以来,圆满完成Ⅰ、Ⅱ、Ⅲ、3个阶段研究任务,揭示了喜马拉雅山和青藏高原腹地的地壳结构和深部构造,在同际核心期刊公开发表10多篇有重要影响的学术论文,受到国际地球科学界的高度评价.第四阶段计划是研究高原北部边缘,即东昆仑造山带和柴达木盆地的结构构造及其形成演化,并与南部喜马拉雅造山带加以对比.经过多次野外地质踏勘,选定剖面的工作路线,2007年各方正式签订协议,并共同开展了野外调查,圆满完成了横穿东昆仑造山带和柴达木盆地的100km垂直深反射地震、300km广角地震反射以及59个宽频带天然地震台站的野外观测施工任务.中方项目组还在东昆仑南部厘定出渐新世晚期-中新世早期大型逆冲推覆构造系统,发现青藏高原渐新世晚期-中新世早期整体隆升的重要证据.2008年将继续天然地震观测,还将开展大地屯磁测深、重力、地质构造剖面观测和反射地震数据处理;2009~2010年将利用各类深部探测资料,综合研究青藏高原北部的地壳结构、岩石圈构造和深部过程.

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