DOI: 10.1016/j.quascirev.2012.07.019
Scopus记录号: 2-s2.0-84878896037
论文题名: Lithology, radiocarbon chronology and sedimentological interpretation of the lacustrine record from Laguna Potrok Aike, southern Patagonia
作者: Kliem P. ; Enters D. ; Hahn A. ; Ohlendorf C. ; Lisé-Pronovost A. ; St-Onge G. ; Wastegård S. ; Zolitschka B.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 71 起始页码: 54
结束页码: 69
语种: 英语
英文关键词: Argentina
; Holocene
; ICDP-project PASADO
; Lake level fluctuations
; Late Pleistocene
; Mass movement deposits
; Mixed-effect regression
; Patagonia
Scopus关键词: Argentina
; Holocenes
; ICDP-project PASADO
; Lake level fluctuations
; Late Pleistocene
; Mass movement
; Mixed-effect regression
; Patagonia
; Deposits
; Geomagnetism
; Salinity measurement
; Sedimentology
; Sediments
; Lithology
; climate variation
; data set
; geochronology
; glacial environment
; Holocene
; lacustrine deposit
; Last Glacial
; lithology
; mass movement
; numerical model
; radiocarbon dating
; sedimentation
; tephrochronology
; Argentina
; Laguna Potrok Aike
; Patagonia
; Santa Cruz [Argentina]
英文摘要: The 106m long composite profile from site 2 of ICDP expedition 5022 (PASADO) at Laguna Potrok Aike documents a distinct change in sedimentation patterns from pelagic sediments at the top to dominating mass movement deposits at its base. The main lithological units correspond to the Holocene, to the Lateglacial and to the last glacial period and can be interpreted as the result of distinct environmental variations. Overflow conditions might have been achieved during the last glacial period, while signs of desiccation are absent in the studied sediment record. Altogether, 58 radiocarbon dates were used to establish a consistent age-depth model by applying the mixed-effect regression procedure which results in a basal age of 51.2cal.kaBP. Radiocarbon dates show a considerable increase in scatter with depth which is related to the high amount of reworking. Validation of the obtained chronology was achieved with geomagnetic relative paleointensity data and tephra correlation. © 2012 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60607
Appears in Collections: 过去全球变化的重建
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作者单位: Geomorphology and Polar Research (GEOPOLAR), Institute of Geography, University of Bremen, Celsiusstr., FVG-M, D-28359 Bremen, Germany; Institut des sciences de la mer de Rimouski (ISMER), Université du Québec à Rimouski (UQAR), Québec, Canada; GEOTOP Research Center, Québec, Canada; Dept. of Physical Geography and Quaternary Geology, Stockholm University, SE-106 91 Stockholm, Sweden
Recommended Citation:
Kliem P.,Enters D.,Hahn A.,et al. Lithology, radiocarbon chronology and sedimentological interpretation of the lacustrine record from Laguna Potrok Aike, southern Patagonia[J]. Quaternary Science Reviews,2013-01-01,71