干旱区生态环境知识资源中心(Arid): Be-10 and OSL dating of Pleistocene fluvial terraces along the Hongshuiba River: Constraints on tectonic and climatic drivers for fluvial downcutting across the NE Tibetan Plateau margin, China

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DOI	10.1016/j.geomorph.2019.106884
	Be-10 and OSL dating of Pleistocene fluvial terraces along the Hongshuiba River: Constraints on tectonic and climatic drivers for fluvial downcutting across the NE Tibetan Plateau margin, China
	Yang, Haibo 1; Yang, Xiaoping 1; Huang, Weiliang 2; Li, An 3; Hu, Zongkai 1; Huang, Xiongnan 1; Yang, Huili 4
通讯作者	Yang, Xiaoping
来源期刊	GEOMORPHOLOGY
ISSN	0169-555X
EISSN	1872-695X
出版年	2020
卷号	348
英文摘要	Accurate geochronologic constraints of fluvial surfaces along tectonically active mountain fronts can help clarify river responses to tectonic uplift and rapid climate change. In this study, we re-constrained abandonment ages of four fluvial terraces along the Hongshuiba River on the northern margin of the Qilian Shan, NE Tibet using Be-10 depth profiles to date fluvial deposits, and OSL dating of capping loess. Comparison of chronological ages of the same surface derived from both boulders and depth profiles provides an opportunity to evaluate the suitability of different sampling methods for determining landform ages in arid climate. Correlating terrace ages with regional climate proxies suggests that terraces formed during an interglacial stage or during glacial to interglacial transitions, or during a period of strong summer monsoon or monsoonal weakening. The initial period of fluvial incision may primarily result from climate changes (e.g, monsoon evolution), and other factors that influence the ratio of sediment flux to water discharge. Similarities between fluvial incision rates and incremental tectonic uplift rates suggest a tectonic control on continuous river downcutting before similar to 26 ka. In summary, climate forcing drives the initial abandonment of fluvial terraces in this region, while the amplitude of fluvial incision was mainly controlled by progressive tectonic uplift. However, comparison of regional fluvial incision rates (e.g. similar to 6 mm/a of the Hongshuiba River), exhumation rates from the Qilian Shan (similar to 0.5 mm/a), denudation rates from the river catchments (0.3-0.8 mm/a), and vertical slip rates of the northern Qilian Thrust (similar to 1 mm/a) all suggest climate change driven forcing of incision since the Late Pleistocene to Holocene. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Qilian Shan Tibetan plateau Fluvial terrace Be-10 depth profile Fluvial incision Climate and tectonic forcing
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000503088700004
WOS关键词	NORTHERN QILIAN SHAN ; SLIP RATE ; HEXI CORRIDOR ; TIAN-SHAN ; MIDDLE PLEISTOCENE ; FRONTAL THRUST ; EROSION RATES ; STRIKE-SLIP ; TIEN-SHAN ; GROWTH
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
EI主题词	2020-01-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312249
作者单位	1.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing 100029, Peoples R China; 2.Changan Univ, Coll Geol Engn & Surveying, Xian 710054, Shaanxi, Peoples R China; 3.China Earthquake Adm, Inst Crustal Dynam, Beijing 100085, Peoples R China; 4.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Res Lab Luminescence Dating, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Yang, Haibo,Yang, Xiaoping,Huang, Weiliang,et al. Be-10 and OSL dating of Pleistocene fluvial terraces along the Hongshuiba River: Constraints on tectonic and climatic drivers for fluvial downcutting across the NE Tibetan Plateau margin, China[J],2020,348.
APA	Yang, Haibo.,Yang, Xiaoping.,Huang, Weiliang.,Li, An.,Hu, Zongkai.,...&Yang, Huili.(2020).Be-10 and OSL dating of Pleistocene fluvial terraces along the Hongshuiba River: Constraints on tectonic and climatic drivers for fluvial downcutting across the NE Tibetan Plateau margin, China.GEOMORPHOLOGY,348.
MLA	Yang, Haibo,et al."Be-10 and OSL dating of Pleistocene fluvial terraces along the Hongshuiba River: Constraints on tectonic and climatic drivers for fluvial downcutting across the NE Tibetan Plateau margin, China".GEOMORPHOLOGY 348(2020).