Crustal shortening on the margins of the Tien Shan
Crustal shortening on the margins of the Tien Shan
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DOI：
10.1080/00206819909465164
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发表时间：
1999-08
期刊：
影响因子：
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通讯作者：
B. Burchfiel;E. Brown;Qidong Deng;Xianyue Feng;Li Jun;P. Molnar;Jianbang Shi;Zhangming Wu
中科院分区：
文献类型：
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作者：
B. Burchfiel;E. Brown;Qidong Deng;Xianyue Feng;Li Jun;P. Molnar;Jianbang Shi;Zhangming Wu
我们提出的结果映射选定的横截面的边缘中国天山，一个陆内山区带，形成了印度-欧亚大陆碰撞。该带在所有尺度上的地形、结构和地层都有显著的横向变化，我们估计的缩短率也揭示了横向变化的缩短分布。在最大的尺度上，它由西部的两个主要高山山脉组成，向东合并成一个复杂的，单一的高山带，有几个不同的山脉，然后向东分离成南部的几个低山脉和北部的一个狭窄的高山山脉。天山南北两翼沿着部分地区的活动褶皱冲断带仅包括中、新生代沉积盖层，其地层和构造自东向西变化。南部褶皱冲断带自西向东宽度减小，复杂程度降低，在断裂前结束。
We present the results of mapping selected cross-sections across the margins of the Chinese Tien Shan, an intracontinental mountain belt that formed in response to the India-Eurasia collision. This belt contains significant lateral variation in topography, structure, and stratigraphy at all scales, and our estimated rates of shortening also reveal a distribution of shortening that varies laterally. At the largest scale, it consists of two major high mountain ranges in the west that merge eastward into a complex, single high mountain belt with several distinct ranges, then separates farther eastward into several low mountain ranges in the south and a single narrow high mountain range in the north. Active fold-and-thrust belts along parts of the north and south flanks of the Tien Shan involve only Mesozoic and Cenozoic sedimentary cover, which varies in both stratigraphy and structure from east to west. The southern fold-and-thrust belt decreases in width and complexity from west to east and ends before rea...