Arid
DOI10.1002/jqs.2857
Palaeo-geoecological significance of Pleistocene trees in the Lluta Valley, Atacama Desert
Veit, Heinz1; May, Jan-Hendrik2; Madella, Andrea3; Delunel, Romain3; Schlunegger, Fritz3; Szidat, Sonke4,5; Capriles, Jose M.6,7
通讯作者Veit, Heinz
来源期刊JOURNAL OF QUATERNARY SCIENCE
ISSN0267-8179
EISSN1099-1417
出版年2016
卷号31期号:3页码:203-213
英文摘要

In the Lluta Valley, northern Chile, climate is hyperarid and vegetation is restricted to the valley floors and lowermost footslopes. Fossil tree trunks and leaves of predominantly Escallonia angustifolia, however, are abundant up to similar to 15m above the present valley floor, where they are intercalated with slope deposits, reflecting higher water levels in the past. A total of 17 samples have been radiocarbon dated, yielding ages between 38 and 15k cal a BP. The youngest ages of 15.4k cal a BP are interpreted as reflecting the beginning of river incision and lowering of the valley floor, impeding the further growth of trees at higher parts of the slopes. The most plausible scenario for this observation is intensified river incision after 15.4k cal a BP due to increased stream power and runoff from the Rio Lluta headwaters in the Western Cordillera and Altiplano corresponding to the highstand of the Tauca and Central Andean Pluvial Event (CAPE) wet phase. Copyright (c) 2016 John Wiley & Sons, Ltd.


英文关键词Atacama desert climate change fluvial dynamics late Pleistocene northern Chile
类型Article
语种英语
国家Switzerland ; Germany ; USA ; Chile
收录类别SCI-E
WOS记录号WOS:000378134000004
WOS关键词SOUTHERN BOLIVIAN ALTIPLANO ; SALAR-DE-ATACAMA ; NORTHERN CHILE ; CLIMATE-CHANGE ; CANYON INCISION ; CENTRAL ANDES ; LAT 22-DEGREES-24-DEGREES-S ; EARLY HOLOCENE ; HISTORY ; UPLIFT
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/2XILL650/194715
作者单位1.Univ Bern, Inst Geog, CH-3012 Bern, Switzerland;
2.Univ Freiburg, Inst Earth & Environm Sci Geol, Hugstetter Str 55, D-79106 Freiburg, Germany;
3.Univ Bern, Inst Geol, CH-3012 Bern, Switzerland;
4.Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland;
5.Univ Bern, Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland;
6.Penn State Univ, Dept Anthropol, University Pk, PA 16802 USA;
7.Univ Tarapaca, Dept Antropol, Arica, Chile
推荐引用方式
GB/T 7714
Veit, Heinz,May, Jan-Hendrik,Madella, Andrea,et al. Palaeo-geoecological significance of Pleistocene trees in the Lluta Valley, Atacama Desert[J],2016,31(3):203-213.
APA Veit, Heinz.,May, Jan-Hendrik.,Madella, Andrea.,Delunel, Romain.,Schlunegger, Fritz.,...&Capriles, Jose M..(2016).Palaeo-geoecological significance of Pleistocene trees in the Lluta Valley, Atacama Desert.JOURNAL OF QUATERNARY SCIENCE,31(3),203-213.
MLA Veit, Heinz,et al."Palaeo-geoecological significance of Pleistocene trees in the Lluta Valley, Atacama Desert".JOURNAL OF QUATERNARY SCIENCE 31.3(2016):203-213.
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