DOI: 10.1016/j.quascirev.2016.10.004
Scopus记录号: 2-s2.0-84994500761
论文题名: Postglacial relative sea-level history of the Prince Rupert area, British Columbia, Canada
作者: Letham B. ; Martindale A. ; Macdonald R. ; Guiry E. ; Jones J. ; Ames K.M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 153 起始页码: 156
结束页码: 191
语种: 英语
英文关键词: Archaeology
; Diatoms
; Northwest Coast
; Paleoshorelines
; Prince Rupert
; Relative sea level change
Scopus关键词: Architecture
; Glacial geology
; Archaeology
; Diatoms
; Paleoshorelines
; Prince Rupert
; Relative sea-level changes
; Sea level
; archaeology
; deglaciation
; diatom
; highstand
; historical record
; Holocene
; Last Glacial Maximum
; lowstand
; paleoceanography
; Postglacial
; radiocarbon dating
; reconstruction
; sea level change
; sedimentary sequence
; shoreline
; British Columbia
; Canada
; Prince Rupert
; Bacillariophyta
英文摘要: This paper presents a history of relative sea level (RSL) change for the last 15,000 years in the Prince Rupert region on the northern coast of British Columbia, Canada. One hundred twenty-three radiocarbon ages of organic material from isolation basin cores, sediment sequence exposures, and archaeological sites having a recognized relation to past sea levels constrain postglacial RSL. The large number of new measurements relating to past sea-level provides a well constrained RSL curve that differs in significant ways from previously published results. After deglaciation following the Last Glacial Maximum, the region experienced an isostatically-induced rapid RSL drop from as much 50 m asl to as low as −6.3 m asl in as little as a few centuries between 14,500 BP and 13,500 BP. After a lowstand below current sea level for about 2000 years during the terminal Pleistocene, RSL rose again to a highstand at least 6 m asl after the end of the Younger Dryas. RSL slowly dropped through the Holocene to close to its current position by 2000-1500 BP, with some potential fluctuations between 3500 and 1500 BP. This study highlights variation in RSL histories across relatively short distances, which must be accounted for by local RSL reconstructions such as this one. This RSL curve aided in the identification of an 8000–9000 year old archaeological site on a 10–12 m asl terrace, which is currently the earliest dated archaeological site in the area, and it provides guidance for searching for even older archaeological remains. We highlight the utility and potential of this refined RSL history for developing surveys for other archaeological sites associated with paleoshorelines. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59388
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Anthropology, University of British Columbia, 6303 NW Marine Drive, Vancouver, Canada; Department of Anthropology, Portland State University, P.O. Box 751, Portland, OR, United States
Recommended Citation:
Letham B.,Martindale A.,Macdonald R.,et al. Postglacial relative sea-level history of the Prince Rupert area, British Columbia, Canada[J]. Quaternary Science Reviews,2016-01-01,153