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地球学报  2005 

念青唐古拉山深部构造特征研究

DOI: 10.3975/cagsb.2005.05.02

Keywords: 念青唐古拉山地震相分析

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Abstract:

本文利用INDEPTH项目深反射地震资料和大地电磁测深资料对念青唐古拉山地壳构造特征进行了深入细致的研究,通过对深反射地震资料的地震相分析及与大地电磁资料的比较得到:①16~22km深度的部分熔融体是多个不连通的独立的穹隆;②在羊八井一当雄北地区,深45~58km以下的下地壳深度存在NE走向的向形构造,该向形构造向北延伸、逐渐变深;③当雄北20km附近,中下地壳在深29~58km范围内存在大型的正断层,断距达6km。

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