期刊
JOURNAL OF ASIAN EARTH SCIENCES
卷 118, 期 -, 页码 111-124出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jseaes.2015.12.024
关键词
Magnetostratigraphy; Growth strata; Cenozoic deformation; Southern Tian Shan
资金
- National Nature Science Foundation of China [41290251, 41272203]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB03020500]
- National Basic Research Program of China [2013C8956400]
The collision between India and Eurasia in the Cenozoic has caused a series of intracontinental deformation in the foreland basins of Tian Shan, but there are debates about the timing of tectonic deformation and the relationship between tectonic uplift and sediment accumulation in the foreland basins. Based on the magnetostratigraphy of growth strata in the Baicheng Depression, Southern Tian Shan, we suggest that an episode of crustal shortening in the late Cenozoic evidenced by syntectonic growth strata in the Kelasu-Yiqikelike structural belt (KYSB) initiated at similar to 5.3 Ma, since then the sedimentation rate accelerated abruptly and coarse molasse deposits accumulated. Combined with the results of growth strata on both flanks of Tian Shan and the fact that the Xiyu Formation on the southern limb of the Kasangtuokai Anticline was involved into the growth strata, we conclude that the period from similar to 7-5 Ma to the early Pleistocene was one of the important episodes of intracontinental deformation in the foreland basins of Tian Shan, as a response to the Cenozoic collision between India and Eurasia. (C) 2016 Elsevier Ltd. All rights reserved.
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