DOI: 10.1016/j.quascirev.2018.07.024
Scopus记录号: 2-s2.0-85050465468
论文题名: Towards a Holocene tephrochronology for the Faroe Islands, North Atlantic
作者: Wastegård S. ; Gudmundsdóttir E.R. ; Lind E.M. ; Timms R.G.O. ; Björck S. ; Hannon G.E. ; Olsen J. ; Rundgren M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 195 起始页码: 195
结束页码: 214
语种: 英语
英文关键词: Faroe Islands
; Holocene
; North Atlantic
; Paleoclimatology
; Quaternary
Scopus关键词: Geology
; Natural sciences
; Faroe Islands
; Holocenes
; North Atlantic
; Paleoclimatology
; Quaternary
; Magnesia
; concentration (composition)
; Holocene
; lacustrine deposit
; paleoclimate
; peat
; Quaternary
; tephra
; tephrochronology
; volcanic ash
; volcanic eruption
; Atlantic Ocean
; Atlantic Ocean (North)
; Faroe Islands
; Hekla
; Iceland
英文摘要: The Faroe Islands hold a key position in the North Atlantic region for tephra studies due to their relative proximity to Iceland. Several tephras have been described over the last 50 years in peat and lake sediment sequences, including the type sites for the Saksunarvatn and Mjáuvøtn tephras. Here we present a comprehensive overview of Holocene tephras found on the Faroe Island. In total 23 tephra layers are described including visible macrotephras such as the Saksunarvatn and Hekla 4 tephras and several cryptotephras. The importance of tephras originally described from the Faroe Islands is highlighted and previously unpublished results are included. In addition, full datasets for several sites are published here for the first time. The Saksunarvatn Ash, now considered to be the result of several eruptions rather than one major eruption, can be separated into two phases on the Faroe Islands; one early phase with two precursor eruptions with lower MgO concentrations (4.5–5.0 wt%) than the main eruption and a later phase with higher MgO concentrations (5.5–6.0 wt%), including the visible Saksunarvatn Ash. The Tjørnuvík Tephra, previously considered to be a primary deposit, is now interpreted as a reworked tephra with material from at least two middle Holocene eruptions of Hekla. Several of the tephras identified on the Faroe Islands provide useful isochrons for climate events during the Holocene. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112101
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physical Geography, Stockholm University, Stockholm, S-10691, Sweden; Nordic Volcanological Center, Institute of Earth Sciences, University of Iceland, Iceland; Department of Earth Sciences, University of Iceland, Iceland; Department of Geography, Royal Holloway University of London, Egham, Surrey TW20 0EX, United Kingdom; Department of Geology, Quaternary Sciences, Lund University, Sweden; School of Environmental Sciences, University of Liverpool, United Kingdom; Department of Physics and Astronomy, Aarhus University, Denmark
Recommended Citation:
Wastegård S.,Gudmundsdóttir E.R.,Lind E.M.,et al. Towards a Holocene tephrochronology for the Faroe Islands, North Atlantic[J]. Quaternary Science Reviews,2018-01-01,195