DOI: 10.1016/j.quascirev.2014.04.031
Scopus记录号: 2-s2.0-84924353107
论文题名: Optimising the use of marine tephrochronology in the North Atlantic: A detailed investigation of the Faroe Marine Ash Zones II, III and IV
作者: Griggs A.J. ; Davies S.M. ; Abbott P.M. ; Rasmussen T.L. ; Palmer A.P.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 106 起始页码: 122
结束页码: 139
语种: 英语
英文关键词: Micromorphology
; North Atlantic
; Synchronisation
; Taphonomy
; Tephra
Scopus关键词: Deposition
; Geochemistry
; Concentration profiles
; Correlation studies
; Geochemical composition
; Last glacial period
; Micromorphologies
; North Atlantic
; Taphonomy
; Tephra
; Synchronization
; future prospect
; ice core
; marine environment
; synchrony
; taphonomy
; tephrochronology
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: Tephrochronology is central to the INTIMATE. 1 goals for testing the degree of climatic synchroneity during abrupt climatic events that punctuated the last glacial period. Since their identification in North Atlantic marine sequences, the Faroe Marine Ash Zone II (FMAZ II), FMAZ III and FMAZ IV have received considerable attention due to their potential for high-precision synchronisation with the Greenland ice-cores. In order to optimise the use of these horizons as isochronous markers, a detailed re-investigation of their geochemical composition, sedimentology and the processes that deposited each ash zone is presented. Shard concentration profiles, geochemical homogeneity and micro-sedimentological structures are investigated for each ash zone preserved within core JM11-19PC, retrieved from the southeastern Norwegian Sea on the central North Faroe Slope. This approach allows a thorough assessment of primary ash-fall preservation and secondary depositional features and demonstrates its value for assessing depositional integrity in the marine environment. Results indicate that the FMAZ II and IV are well-resolved primary deposits that can be used as isochrons for high-precision correlation studies. We outline key recommendations for future marine tephra studies and provide a protocol for optimising the application of tephrochronology to meet the INTIMATE synchronisation goals. © 2014 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60101
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geography, College of Science, Swansea University, Singleton Park, Swansea, United Kingdom; Centre for Arctic Gas Hydrate, Environment and Climate (CAGE), Department of Geology, University of Trømso, Trømso, Norway; Department of Geography, Royal Holloway, Egham Hill, Egham, United Kingdom
Recommended Citation:
Griggs A.J.,Davies S.M.,Abbott P.M.,et al. Optimising the use of marine tephrochronology in the North Atlantic: A detailed investigation of the Faroe Marine Ash Zones II, III and IV[J]. Quaternary Science Reviews,2014-01-01,106