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DOI	10.1016/j.epsl.2018.12.032
	A constant slip rate for the western Qilian Shan frontal thrust during the last 200 ka consistent with GPS-derived and geological shortening rates
	Hetzel, Ralf; Hampel, Andrea; Gebbeken, Pia; Xu, Qiang; Gold, Ryan D.
通讯作者	Hetzel, R (通讯作者)
发表日期	2019
ISSN	0012-821X
EISSN	1385-013X
起始页码	100
结束页码	113
卷号	509
英文摘要	Active thrust faulting at the front of the Qilian Shan accommodates the northeastward growth of the Tibetan Plateau, however, the lifespan of individual faults and their slip history on different timescales remain largely unknown. Here, we show that the main range-bounding thrust fault of the western Qilian Shan has accrued tectonic slip at an almost constant rate during the last similar to 200 ka, and possibly since fault initiation in the mid-Miocene. Our finding is based on Be-10 ages from a flight of five deformed fluvial terraces along the Hongshuiba river, which constrain the vertical slip rate of the Qilian Shan frontal thrust to be 1.2 +/- 0.1 m/ka during the last 200 ka. With a fault dip of 30 +/- 5 degrees constrained by seismic reflection data, we obtain a horizontal shortening rate of 2.0 +/- 0.3 m/ka. This value is consistent with both the short-term shortening rate of 1.7 +/- 0.3 mm/a derived from GPS data and the long-term shortening rate of 2.1 +/- 0.4 m/ka, which is based on a balanced geological cross-section. The latter provides a total shortening estimate of 25 +/- 3 km since the thrust fault initiated 12 +/- 2 Ma ago. The agreement between the shortening rates on the range of timescales between 10(0) and 10(7) years suggests that the western Qilian Shan frontal thrust has slipped at a steady rate since its initiation and implies that this fault is the main structure responsible for the growth of the western Qilian Shan. (C) 2019 Elsevier B.V. All rights reserved.
关键词	ALTYN-TAGH FAULT LATE QUATERNARY HEXI CORRIDOR FLUVIAL TERRACES TIBETAN PLATEAU NORTHEASTWARD GROWTH DISPLACEMENT RATES GANSU PROVINCE WASATCH FAULT BE-10
英文关键词	fault scarp; fluvial terrace; active faulting; slip rate; cosmogenic Be-10; Qilian Shan
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000457661900011
来源期刊	EARTH AND PLANETARY SCIENCE LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259568
推荐引用方式 GB/T 7714	Hetzel, Ralf,Hampel, Andrea,Gebbeken, Pia,et al. A constant slip rate for the western Qilian Shan frontal thrust during the last 200 ka consistent with GPS-derived and geological shortening rates[J]. 中国科学院青藏高原研究所,2019,509.
APA	Hetzel, Ralf,Hampel, Andrea,Gebbeken, Pia,Xu, Qiang,&Gold, Ryan D..(2019).A constant slip rate for the western Qilian Shan frontal thrust during the last 200 ka consistent with GPS-derived and geological shortening rates.EARTH AND PLANETARY SCIENCE LETTERS,509.
MLA	Hetzel, Ralf,et al."A constant slip rate for the western Qilian Shan frontal thrust during the last 200 ka consistent with GPS-derived and geological shortening rates".EARTH AND PLANETARY SCIENCE LETTERS 509(2019).