干旱区生态环境知识资源中心(Arid): Late Quaternary Tectonics, Incision, and Landscape Evolution of the Calchaqui River Catchment, Eastern Cordillera, NW Argentina

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DOI	10.1029/2019JF005091
	Late Quaternary Tectonics, Incision, and Landscape Evolution of the Calchaqui River Catchment, Eastern Cordillera, NW Argentina
	McCarthy, James A.; Schoenbohm, Lindsay M.; Bierman, Paul R.; Rood, Dylan; Hidy, Alan J.
通讯作者	Schoenbohm, LM (corresponding author), Univ Toronto, Dept Earth Sci, Toronto, ON, Canada.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
ISSN	2169-9003
EISSN	2169-9011
出版年	2019
卷号	124 期号:8 页码:2265-2287
英文摘要	Unraveling the relative impacts of climate, tectonics, and lithology on landscape evolution is complicated by the temporal and spatial scale over which observations are made. We use soil and desert pavement classification, longitudinal river profiles, Be-10-derived catchment mean modern and paleo-erosion rates, and vertical incision rates to test whether, if we restrict our analyses to a spatial scale over which climate is relatively invariant, tectonic and lithologic factors will dominate the late Quaternary landscape evolution of the Calchaqui River Catchment, NW Argentina. We find that the spatial distribution of erosion rates, normalized channel steepness indices, and concavity indices reflect active tectonics and lithologic resistance. Knickpoints are spatially coincident with tectonic and/or lithologic discontinuities, indicating local base-level control by faulting. Catchment mean erosion rates, ranging from 22.5 +/- 2.6 to 121.9 +/- 13.7 mm/kyr, and paleo-erosion rates, ranging from 56 (+43)/(-19) to 105 (+60)/(-33) mm/kyr, are similar, possibly suggesting that Quaternary climate changes have not had a strong enough influence on erosion rates to be detected using cosmogenic Be-10. However, punctuated abandonment of pediment and strath terraces at 43.6 (+15.0)/(-11.6), 91.2 (+54.2)/(-22.2), and 151 (+92.7)/(-34.1) ka and disparities between vertical incision rates and catchment mean erosion rates could suggest periods of landscape transience, possibly reflecting climate cyclicity. Our results emphasize the role of tectonic uplift and lithologic contrasts in shaping long-term erosion rates and channel morphology at the relatively local scale of the Calchaqui River Catchment, in contrast to regional-scale studies which find precipitation to exert the dominant control.
英文关键词	Eastern Cordillera longitudinal river profile analysis Be-10 catchment mean erosion rates landscape evolution climate and tectonics
类型	Article
语种	英语
开放获取类型	Green Submitted, Bronze, Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000490932200012
WOS关键词	SOUTHERN CENTRAL ANDES ; NORTHERN SIERRAS PAMPEANAS ; CERRO GALAN CALDERA ; SANTA-MARIA BASIN ; EROSION RATES ; COSMOGENIC NUCLIDES ; PUNA PLATEAU ; NORTHWESTERN ARGENTINA ; GEOMORPHIC CONSTRAINTS ; CLIMATIC CONTROL
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369679
作者单位	[McCarthy, James A.; Schoenbohm, Lindsay M.] Univ Toronto, Dept Earth Sci, Toronto, ON, Canada; [Bierman, Paul R.] Univ Vermont, Dept Geol, Burlington, VT USA; [Bierman, Paul R.] Univ Vermont, Rubenstein Sch Environm & Nat Resources, Burlington, VT USA; [Rood, Dylan] Imperial Coll London, Dept Earth Sci & Engn, London, England; [Hidy, Alan J.] Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA USA
推荐引用方式 GB/T 7714	McCarthy, James A.,Schoenbohm, Lindsay M.,Bierman, Paul R.,et al. Late Quaternary Tectonics, Incision, and Landscape Evolution of the Calchaqui River Catchment, Eastern Cordillera, NW Argentina[J],2019,124(8):2265-2287.
APA	McCarthy, James A.,Schoenbohm, Lindsay M.,Bierman, Paul R.,Rood, Dylan,&Hidy, Alan J..(2019).Late Quaternary Tectonics, Incision, and Landscape Evolution of the Calchaqui River Catchment, Eastern Cordillera, NW Argentina.JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,124(8),2265-2287.
MLA	McCarthy, James A.,et al."Late Quaternary Tectonics, Incision, and Landscape Evolution of the Calchaqui River Catchment, Eastern Cordillera, NW Argentina".JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE 124.8(2019):2265-2287.