DOI: 10.1016/j.epsl.2017.11.004
Scopus记录号: 2-s2.0-85034103527
论文题名: Tectonic control of erosion in the southern Central Andes
作者: Val P. ; Venerdini A.L. ; Ouimet W. ; Alvarado P. ; Hoke G.D.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 482 起始页码: 160
结束页码: 170
语种: 英语
英文关键词: Andes
; crustal seismicity
; erosion rate
; landscape evolution
; precipitation
; tectonics
Scopus关键词: Catchments
; Erosion
; Precipitation (chemical)
; Rain
; Runoff
; Strain rate
; Andes
; Catchment erosion
; crustal seismicity
; Erosion rates
; Landscape evolutions
; Orographic rainfalls
; Tectonic control
; Tectonic forcing
; Tectonics
; crustal structure
; erosion rate
; landscape evolution
; precipitation (climatology)
; rainfall
; seismicity
; spatial distribution
; tectonic setting
; Andes
英文摘要: Landscape evolution modeling and global compilations of exhumation data indicate that a wetter climate, mainly through orographic rainfall, can govern the spatial distribution of erosion rates and crustal strain across an orogenic wedge. However, detecting this link is not straightforward since these relationships can be modulated by tectonic forcing and/or obscured by heavy-tailed frequencies of catchment discharge. This study combines new and published along-strike average rates of catchment erosion constrained by 10Be and river-gauge data in the Central Andes between 28°S and 36°S. These data reveal a nearly identical latitudinal pattern in erosion rates on both sides of the range, reaching a maximum of 0.27 mm/a near 34°S. Collectively, data on topographic and fluvial relief, variability of rainfall and discharge, and crustal seismicity suggest that the along-strike pattern of erosion rates in the southern Central Andes is largely independent of climate, but closely relates to the N–S distribution of shallow crustal seismicity and diachronous surface uplift. The consistently high erosion rates on either side of the orogen near 34°S imply that climate plays a secondary role in the mass flux through an orogenic wedge where the perturbation to base level is similar on both sides. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110136
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: 204 Heroy Geology Laboratory, Syracuse University, Syracuse, NY 13244, United States; Scripps Institution of Oceanography – Earth Division, University of California, La Jolla, San Diego, CA 92093, United States; CIGEOBIO, Conicet – Dept. Geofísica y Astronomía, Universidad Nacional de San Juan, San Juan, Argentina; Dept. of Geography, Center for Integrative Geosciences, University of Connecticut, Storrs, CT 06269, United States
Recommended Citation:
Val P.,Venerdini A.L.,Ouimet W.,et al. Tectonic control of erosion in the southern Central Andes[J]. Earth and Planetary Science Letters,2018-01-01,482