熊熊;王继业;滕吉文;

• 1:中国科学院测量与地球物理研究所
• 2:中国科学院测量与地球物理研究所
• 3:中国科学院地质与地球物理研究所 武汉430077
• 4:中国科学院地质与地球物理研究所

摘要(Abstract)：

阿尔金断裂是亚洲大陆最大、也是最活跃的走滑断层之一。一般认为,印度板块与欧亚大陆间的汇聚通过地壳增厚与沿阿尔金等主要深大断裂的侧向滑移2种机制被青藏高原造山带的地壳形变所吸收。由于这2种机制所预测的阿尔金断裂的左旋滑移速率相差甚巨,因此,阿尔金断裂的滑移速率成为判断2种机制相对重要性的重要依据。采用地质学、大地测量学及数值模拟方法对阿尔金断裂滑移的研究结果表明,阿尔金断裂的滑移速率呈长期减小的趋势;青藏高原经历了由块体的侧向挤出向地壳增厚的转变过程;阿尔金断裂在不同地质时间尺度下的滑移速率尚需精确确定;单纯将阿尔金断裂滑移速率的大小作为判断青藏高原构造模式的依据也是应该受到质疑的。

关键词(KeyWords)： 阿尔金断裂;滑移速率;构造意义;时间尺度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(4027403740474028);; 中国科学院创新重要方向项目(kzcx3-sw-153)

作者(Author): 熊熊;王继业;滕吉文;

Email:

DOI:

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