干旱区生态环境知识资源中心(Arid): Combined unsteady denudation and climatic gradient factors constrain carbonate landscape evolution: New insights from in situ cosmogenic Cl-36

Arid

DOI	10.1016/j.quageo.2020.101075
	Combined unsteady denudation and climatic gradient factors constrain carbonate landscape evolution: New insights from in situ cosmogenic Cl-36
	Yang, Ye; Lang, Yun-Chao; Xu, Sheng; Liu, Cong-Qiang; Cui, Li-Feng; Freeman, Stewart P. H. T.; Wilcken, Klaus M.
通讯作者	Xu, S ; Liu, CQ
来源期刊	QUATERNARY GEOCHRONOLOGY
ISSN	1871-1014
EISSN	1878-0350
出版年	2020
卷号	58
英文摘要	In situ cosmogenic nuclides are widely employed to quantify topographic and geomorphic landscape evolution. However, few studies are devoted to investigating possibly unsteady denudation. In this work the denudation rates of five surface bedrock and one depth profile are measured using in situ cosmogenic Cl-36 in different climate zones in China; cosmogenic Cl-36 is a powerful proxy for the surface denudation processes of carbonate landscapes in different climatic gradients since carbonates are more sensitive to climate change than silicates. Compiling previous worldwide surface denudation studies in different gradients, we find that: (I) denudation rate increases systematically with mean annual precipitation (MAP) in arid climatic zones (MAP lower than similar to 700 mm yr(-1)) and is dominated by long-term climatic gradients; (II) humid climatic zone (MAP greater than similar to 700 mm yr(-1)) denudation rates are about constrained to 34.1. 11.7 mm kyr(-1) by carbonate dissolution kinetics; and (III) denudation rate is also influenced by short-term physical erosion or abrupt erosive events. Accordingly, the reconstructed evolutionary history of the Guizhou depth profile results from either a relatively high denudation rate (55.5(-4.4)(+5.6) mm kyr(-1)) and long duration exposure (274(-147)(+120) ka), or an alternative a low denudation rate (0.8(-0.8)(+13.3) mm kyr(-1)) and a recent abrupt erosive event (13.0(-1.6)(+1.9) ka). These two possible solutions suggest that assumed long-term averaged denudation rate can conceal episodic erosion events. Given tectonic quiescence we propose that climate change might mainly control an erosive event during the last glacial termination (similar to 14 ka), which also implies that caution should be taken when determining the denudation rate of a landscape where climate change and/or tectonic activity plays an important role.
英文关键词	Cosmogenic nuclide Unsteady denudation Climate gradient Exposure dating Chlorine-36 Carbonate
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000536287300005
WOS关键词	RATES ; GUIZHOU ; RADIONUCLIDES ; CALIBRATION ; EROSION ; CHINA ; AL-26 ; DISSOLUTION ; PLATEAU ; BE-10
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324570
作者单位	[Yang, Ye; Lang, Yun-Chao; Xu, Sheng; Liu, Cong-Qiang; Cui, Li-Feng] Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China; [Xu, Sheng; Freeman, Stewart P. H. T.] Scottish Univ Environm Res Ctr, E Kilbride G75 0QF, Lanark, Scotland; [Wilcken, Klaus M.] Australian Nucl Sci & Technol Org, Sydney, NSW, Australia
推荐引用方式 GB/T 7714	Yang, Ye,Lang, Yun-Chao,Xu, Sheng,et al. Combined unsteady denudation and climatic gradient factors constrain carbonate landscape evolution: New insights from in situ cosmogenic Cl-36[J],2020,58.
APA	Yang, Ye.,Lang, Yun-Chao.,Xu, Sheng.,Liu, Cong-Qiang.,Cui, Li-Feng.,...&Wilcken, Klaus M..(2020).Combined unsteady denudation and climatic gradient factors constrain carbonate landscape evolution: New insights from in situ cosmogenic Cl-36.QUATERNARY GEOCHRONOLOGY,58.
MLA	Yang, Ye,et al."Combined unsteady denudation and climatic gradient factors constrain carbonate landscape evolution: New insights from in situ cosmogenic Cl-36".QUATERNARY GEOCHRONOLOGY 58(2020).