DOI: 10.1016/j.quascirev.2019.03.003
Scopus记录号: 2-s2.0-85062709568
论文题名: Holocene paleomagnetic secular variation (PSV) near 80° N, Northwest Spitsbergen, Svalbard: Implications for evaluating High Arctic sediment chronologies
作者: Ólafsdóttir S. ; Reilly B.T. ; Bakke J. ; Stoner J.S. ; Gjerde M. ; van der Bilt W.G.M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2019
卷: 210 起始页码: 90
结束页码: 102
语种: 英语
英文关键词: Chronology
; High Arctic
; Holocene
; Lake sediments
; Paleomagnetic secular variation
; Paleomagnetism
; Radiocarbon
; Svalbard
Scopus关键词: Geomagnetism
; Lakes
; Stratigraphy
; Chronology
; High arctic
; Holocenes
; Lake sediments
; Paleomagnetic secular variations
; Paleomagnetism
; Radiocarbon
; Svalbard
; Sediments
英文摘要: We present a paleomagnetic study of two Holocene lake sediment sequences from Northwest Spitsbergen on Svalbard, Norway. Core HAP-212 from Lake Hajeren preserves a rare combination of a well-defined Characteristic Remanent Magnetization (ChRM) and robust age control defined by 21 terrestrial macrofossil-derived radiocarbon dates—providing a unique opportunity to assess the stratigraphic potential of High Arctic Holocene paleomagnetic secular variation (PSV) close to 80° N. Core AMP-112 from Hakluytvatnet, which is also well dated, is a poor magnetic recorder and cannot be used for geomagnetic reconstruction. Comparison of the HAP-212 PSV record with poorly dated regional records show similar directional features, suggesting that PSV can be used for chronological synchronization. Comparison of the HAP-212 PSV with well dated records ∼1800 km to the southwest and southeast show that these records are in-phase at millennial timescales, within dating and magnetic uncertainties, indicating that a consistent geomagnetic signal is recorded at these temporal and spatial scales. These findings support the notion that PSV, when optimally recorded, can be used to import chronologies from lower latitudes to the High Arctic, where low organic content, hard water effects, lack of datable material, and other difficulties often preclude more conventional radiocarbon dating. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117345
Appears in Collections: 气候变化与战略
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Recommended Citation:
Ólafsdóttir S.,Reilly B.T.,Bakke J.,et al. Holocene paleomagnetic secular variation (PSV) near 80° N, Northwest Spitsbergen, Svalbard: Implications for evaluating High Arctic sediment chronologies[J]. Quaternary Science Reviews,2019-01-01,210