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Geomorphic constraints on active mountain growth by the lateral propagation of fault-related folding: A case study on Yumu Shan, NE Tibet
Seong, Yeong Bae1; Kang, Hee-Cheol2; Ree, Jin-Han3; Choi, Jeong-Heon4; Lai, Zhonping5; Long, Hao5; Yoon, Hye On4
2011-05-01
发表期刊JOURNAL OF ASIAN EARTH SCIENCES
卷号41期号:2页码:184-194
文章类型Article
摘要The mountain range of the Yumu Shan in NE Tibet is the topographic expression of actively growing fault-related folds developed in the hanging walls of a system of mostly northeast-vergent blind thrusts. Here we present a Tibetan example on the geomorphic response to lateral fold propagation using both qualitative analysis of the geomorphic characteristics of this region (e.g., wind and water gaps, drainage density, and along-strike topography of the range crest) and quantitative analysis based on cosmogenic Be-10 surface exposure dating and optically stimulated luminescence dating on the rates of uplift and lateral propagation of the anticline. The elevations of the past positions of successively deflected paleo-rivers show a systematic decrease toward the eastern tip of the anticline, in tandem with an eastward decrease in drainage density. Combining the age data obtained by cosmogenic Be-10 and OSL dating methods with the heights of abandoned terraces, we calculated average uplift and lateral propagation rates of similar to 378 mm/ka over the past similar to 185 ka and similar to 40 mm/yr over the past similar to 150 ka, respectively. Our single-site evaluation of the relation between tear faulting and channel deflection suggests that the tear faulting occurs along weakened bedrock already dissected by the former stream. This finding is inconsistent with the conventional hypothesis that the route of the deflecting stream is controlled by the orientation of the tear-faulting zone. Topographic vertical and lateral fold growth of the Yumu Shan were probably driven by the eastward propagation of a blind thrust since the late Neogene following the initial deposition of sediments in the Hexi Corridor, which were transported from the Qilian Shan. (C) 2011 Elsevier Ltd. All rights reserved.
关键词Active Tectonics Blind Thrust Lateral Fold Propagation Channel Deflection Cosmogenic Be-10 Dating Osl Dating
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]REGENERATIVE-DOSE PROTOCOL ; FLUVIAL TERRACES ; WHEELER RIDGE ; QILIAN-SHAN ; COSMOGENIC RADIONUCLIDES ; SOUTHERN-CALIFORNIA ; LANDSCAPE RESPONSE ; RIVER INCISION ; NEW-ZEALAND ; BE-10
收录类别SCI
语种英语
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000290602700006
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6000
专题青海盐湖研究所知识仓储
作者单位1.Korea Univ, Dept Geog Educ, Seoul 136701, South Korea
2.Pukyong Natl Univ, Inst Environm Geosci, Pusan, South Korea
3.Korea Univ, Dept Earth & Environm Sci, Seoul 136701, South Korea
4.Korean Basic Sci Inst, Taejon 305333, South Korea
5.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Luminescence Dating Grp, Beijing 100864, Peoples R China
推荐引用方式
GB/T 7714
Seong, Yeong Bae,Kang, Hee-Cheol,Ree, Jin-Han,et al. Geomorphic constraints on active mountain growth by the lateral propagation of fault-related folding: A case study on Yumu Shan, NE Tibet[J]. JOURNAL OF ASIAN EARTH SCIENCES,2011,41(2):184-194.
APA Seong, Yeong Bae.,Kang, Hee-Cheol.,Ree, Jin-Han.,Choi, Jeong-Heon.,Lai, Zhonping.,...&Yoon, Hye On.(2011).Geomorphic constraints on active mountain growth by the lateral propagation of fault-related folding: A case study on Yumu Shan, NE Tibet.JOURNAL OF ASIAN EARTH SCIENCES,41(2),184-194.
MLA Seong, Yeong Bae,et al."Geomorphic constraints on active mountain growth by the lateral propagation of fault-related folding: A case study on Yumu Shan, NE Tibet".JOURNAL OF ASIAN EARTH SCIENCES 41.2(2011):184-194.
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