DOI: 10.1016/j.quascirev.2013.02.008
Scopus记录号: 2-s2.0-84875235916
论文题名: Late Pleistocene climate change and landscape dynamics in the Eastern Alps: The inner-alpine Unterangerberg record (Austria)
作者: Starnberger R. ; Drescher-Schneider R. ; Reitner J.M. ; Rodnight H. ; Reimer P.J. ; Spötl C.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 68 起始页码: 17
结束页码: 42
语种: 英语
英文关键词: European Alps
; Lake sediments
; Late Pleistocene
; Luminescence dating
; Pollen analysis
; Stratigraphy
Scopus关键词: European Alps
; Lake sediments
; Late Pleistocene
; Luminescence dating
; Pollen analysis
; Climate change
; Core drilling
; Forestry
; Landslides
; Luminescence
; Sedimentology
; Stratigraphy
; Vegetation
; Sediments
; aggradation
; alpine environment
; biostratigraphy
; climate variation
; fine grained sediment
; fluvial deposit
; lacustrine deposit
; landscape change
; landslide
; luminescence dating
; paleoclimate
; paleoecology
; palynology
; permafrost
; Pleistocene
; radiocarbon dating
; sediment core
; treeline
; vegetation cover
; vegetation history
; Earth Movement
; Forestry
; Lakes
; Mountains
; Plants
; Seasonal Variation
; Sediments
; Alps
; Austria
; Eastern Alps
; Tyrol
; Unterangerberg
英文摘要: Drill cores from the inner-alpine valley terrace of Unterangerberg, located in the Eastern Alps of Austria, offer first insights into a Pleistocene sedimentary record that was not accessible so far. The succession comprises diamict, gravel, sand, lignite and thick, fine grained sediments. Additionally, cataclastic deposits originating from two paleo-landslide events are present. Multi-proxy analyses including sedimentological and palynological investigations as well as radiocarbon and luminescence data record the onset of the last glacial period (Würmian) at Unterangerberg at ~120-110 ka. This first time period, correlated to the MIS 5d, was characterised by strong fluvial aggradation under cold climatic conditions, with only sparse vegetation cover. Furthermore, two large and quasi-synchronous landslide events occurred during this time interval. No record of the first Early Würmian interstadial (MIS 5c) is preserved. During the second Early Würmian interstadial (MIS 5a), the local vegetation was characterised by a boreal forest dominated by Picea, with few thermophilous elements. The subsequent collapse of the vegetation is recorded by sediments dated to ~70-60 ka (i.e. MIS 4), with very low pollen concentrations and the potential presence of permafrost. Climatic conditions improved again between ~55 and 45 ka (MIS 3) and cold-adapted trees re-appeared during interstadials, forming an open forest vegetation. MIS 3 stadials were shorter and less severe than the MIS 4 at Unterangerberg, and vegetation during these cold phases was mainly composed of shrubs, herbs and grasses, similar to what is known from today's alpine timberline. The Unterangerberg record ended at ~45 ka and/or was truncated by ice during the Last Glacial Maximum. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60662
Appears in Collections: 过去全球变化的重建
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作者单位: Institute for Geology and Palaeontology, Leopold-Franzens University of Innsbruck, Innrain 52, 6020 Innsbruck, Austria; Institute of Plant Sciences, Karl-Franzens University of Graz, Holteigasse 6, 8010 Graz, Austria; Geological Survey of Austria, Neulinggasse 38, 1030 Vienna, Austria; Centre for Climate, the Environment and Chronology (14CHRONO), School of Geography, Archaeology and Palaeoecology, Queen's University Belfast, Belfast BT7 1NN, United Kingdom
Recommended Citation:
Starnberger R.,Drescher-Schneider R.,Reitner J.M.,et al. Late Pleistocene climate change and landscape dynamics in the Eastern Alps: The inner-alpine Unterangerberg record (Austria)[J]. Quaternary Science Reviews,2013-01-01,68