DOI: 10.1016/j.quascirev.2016.05.026
Scopus记录号: 2-s2.0-84974628168
论文题名: Late Pleistocene and Holocene tephrostratigraphy of interior Alaska and Yukon: Key beds and chronologies over the past 30,000 years
作者: Davies L.J. ; Jensen B.J.L. ; Froese D.G. ; Wallace K.L.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 146 起始页码: 28
结束页码: 53
语种: 英语
英文关键词: Alaska
; Bayesian modelling
; Holocene
; Tephrochronology
; Tephrostratigraphy
; Yukon Territory
Scopus关键词: Bayesian networks
; Alaska
; Bayesian modelling
; Holocenes
; Tephrochronology
; Tephrostratigraphy
; Yukon Territory
; Geochemistry
; Bayesian analysis
; biostratigraphy
; geochemistry
; geochronology
; Holocene
; Pleistocene
; tephra
; tephrochronology
; volcanic eruption
; Alaska
; Alaska Peninsula
; Arctic
; Canada
; Canada
; Europe
; Greenland
; United States
; White River [United States]
; Yukon Territory
英文摘要: The Aleutian Arc-Alaska Peninsula and Wrangell volcanic field are the main source areas for tephra deposits found across Alaska and northern Canada, and increasingly, tephra from these eruptions have been found further afield in North America, Greenland, and Europe. However, there have been no broad scale reviews of the Late Pleistocene and Holocene tephrostratigraphy for this region since the 1980s, and this lack of data is hindering progress in identifying these tephra both locally and regionally. To address this gap and the variable quality of associated geochemical and chronological data, we undertake a detailed review of the latest Pleistocene to Holocene tephra found in interior Alaska and Yukon. This paper discusses nineteen tephra that have distributions beyond southwest Alaska and that have the potential to become, or already are, important regional markers. This includes three 'modern' events from the 20th century, ten with limited data availability but potentially broad distributions, and six that are widely reported in interior Alaska and Yukon. Each tephra is assessed in terms of chronology, geochemistry and distribution, with new Bayesian age estimates and geochemical data when possible. This includes new major-element geochemical data for Crater Peak 1992, Redoubt 1989-90, and two andesitic tephra from St Michael Island (Tephra D), as well as revised age estimates for Dawson tephra, Oshetna, Hayes set H, Aniakchak CFE II, and the White River Ashes, northern and eastern lobes. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59523
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB, Canada; Royal Alberta Museum, Edmonton, AB, Canada; U.S. Geological Survey, Alaska Volcano Observatory, 4210 University Drive, Anchorage, AK, United States
Recommended Citation:
Davies L.J.,Jensen B.J.L.,Froese D.G.,et al. Late Pleistocene and Holocene tephrostratigraphy of interior Alaska and Yukon: Key beds and chronologies over the past 30,000 years[J]. Quaternary Science Reviews,2016-01-01,146