DOI: 10.1016/j.quascirev.2013.08.016
Scopus记录号: 2-s2.0-84884679117
论文题名: New data on the Lateglacial period of SW Europe: A high resolution multiproxy record from Laguna de la Roya (NW Iberia)
作者: Muñoz Sobrino C. ; Heiri O. ; Hazekamp M. ; van der Velden D. ; Kirilova E.P. ; García-Moreiras I. ; Lotter A.F.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 80 起始页码: 58
结束页码: 77
语种: 英语
英文关键词: Lacustrine sedimentation
; Lateglacial record
; Palaeotemperatures
; SW Europe
; Vegetation dynamics
Scopus关键词: Lacustrine sedimentations
; Lateglacial
; Palaeotemperatures
; SW Europe
; Vegetation dynamics
; Atmospheric temperature
; Lakes
; Stratigraphy
; Vegetation
; biostratigraphy
; data set
; deep sea
; fly
; interstadial
; lacustrine deposit
; late glacial
; Older Dryas
; paleoecology
; paleotemperature
; pollen
; radiocarbon dating
; reconstruction
; sediment core
; vegetation dynamics
; vegetation history
; Arctic
; Castilla y Leon
; Central Europe
; Greenland
; Iberian Peninsula
; Laguna de la Roya
; Spain
; Zamora [Castilla y Leon]
英文摘要: High-resolution multiproxy analyses were performed on a 128cm section of organic sediments accumulated in a small mountain lake in NW Iberia (Laguna de la Roya, 1608masl). The pollen stratigraphy together with radiocarbon dating provided the basis for a chronology ranging from 15,600 to 10,500calyrBP. Chironomid-inferred July air temperatures suggest a temperature range from 7 to 13°C, also evidencing two well-established cold periods which may be equivalent to the INTIMATE stages GS-2a and GS-1. Furthermore, a number of short cold events (with summer temperatures dropping about 0.5-1°C) appear intercalated within the Lateglacial Interstadial (possibly equivalent to the INTIMATE cold events GI-1d, GI-1c2 and GI-1b) and the early Holocene (possibly equivalent to the 11.2k event). The temperature variations predicted by our reconstruction allow explaining the changes in local conditions and productivity of the lake inferred from the biological record of the same sediment core. Furthermore, they also agree with the local and regional vegetation dynamics, and the main oscillations deduced for the vegetation belts. Based on its chronology our multiproxy record indicates a similar temperature development in NW Iberia as inferred by the Greenland δ18O record, the marine deep-sea records off the Atlantic Iberian Margin, and other chironomid-based Lateglacial temperature reconstructions from Europe. Nevertheless, the impact of most of the less intense Lateglacial/early Holocene cold events in NW Iberia was most probably limited to very sensitive sites that were very close to ecotonal situations. Particularly, our new pollen record indicates that they were represented as three minor environmental crises occurring during the Lateglacial Interestadial in this area. The Older Dryas event (in our usage corresponding to the Aegelsee Oscillation in Central Europe and event GI-1d in central Greenland) has previously been described in this region, but its age and duration (ca14,250-14050calyrBP) is now better constrained. The two subsequent stages, La Roya I (ca13,600-13,400calyrBP) and La Roya II (ca13,300-12,900calyrBP) have been described for first time in NW Iberia. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60463
Appears in Collections: 过去全球变化的重建
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作者单位: Departamento de Bioloxía Vexetal e Ciencias do Solo, Facultade de Ciencias, Universidade de Vigo, Campus de Marcosende s/n., E-36310 Vigo, Spain; Institute of Plant Sciences and Oeschger Centre for Climate Change Research, University of Bern, CH-3013 Bern, Switzerland; Department of Physical Geography, Laboratory of Palaeobotany and Palynology, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, Netherlands
Recommended Citation:
Muñoz Sobrino C.,Heiri O.,Hazekamp M.,et al. New data on the Lateglacial period of SW Europe: A high resolution multiproxy record from Laguna de la Roya (NW Iberia)[J]. Quaternary Science Reviews,2013-01-01,80