DOI: 10.1016/j.quascirev.2013.08.008
Scopus记录号: 2-s2.0-84883402190
论文题名: Millennial-scale phase relationships between ice-core and Mediterranean marine records: Insights from high-precision 40Ar/39Ar dating of the Green Tuff of Pantelleria, Sicily Strait
作者: Scaillet S. ; Vita-Scaillet G. ; Rotolo S.G.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 78 起始页码: 141
结束页码: 154
语种: 英语
英文关键词: Ar/Ar dating
; Green Tuff
; Pantelleria
; Radioisotopic timescale
; Tephrochronology
Scopus关键词: Eastern Mediterranean
; Geomagnetic excursions
; Green Tuff
; Paleoclimate studies
; Pantelleria
; Phase relationships
; Tephrochronology
; Time-scales
; Climate change
; Geomagnetism
; Volcanoes
; Ice control
; argon-argon dating
; deep sea
; ice core
; marine record
; paleoceanography
; paleoclimate
; precision
; Quaternary
; radiocarbon dating
; speleothem
; strait
; tephrochronology
; tuff
; Strait of Sicily
英文摘要: With the advent of annually-resolved polar ice records extending back to 70ka, marine and continental paleoclimate studies have now matured into a discipline where high-quality age control is essential for putting on an equal pace layer-counted timescale models and Late Quaternary sedimentary records. High-resolution U-Th dating of speleothem records and 40Ar/39Ar dating of globally recorded geomagnetic excursions have recently improved the time calibration of Quaternary archives, reflecting the cross-disciplinary effort made to synchronize the geologic record at the millennial scale. Yet, tie-points with such an absolute age control remain scarce for paleoclimatic time-series extending beyond the radiocarbon timescale, most notably in the marine record. Far-travelled tephra layers recorded both onland and offshore provide an alternative in such instance to synchronize continental and marine archives via high-resolution 40Ar/39Ar dating of the parent volcanic eruption. High-resolution 40Ar/39Ar data are reported herein for one such volcanic marker, the Green Tuff of Pantelleria and its Y-6 tephra equivalent recorded throughout the Central and Eastern Mediterranean. Published radiochronometric and δ18O orbitally-tied ages for this marker horizon scatter widely from about 41ka up to 56ka. Our new 40Ar/39Ar age at 45.7±1.0ka (2σ) reveals that previous estimates are biased by more than their reported errors would suggest, including recent orbital tuning of marine records hosting the tephra bed that are reevaluated in the context of this study. This improved estimate enables potential phase lags and leads to be studied between deep-sea and terrestrial archives with unrivaled (near-millennial) 40Ar/39Ar precision in the marine record. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60498
Appears in Collections: 过去全球变化的重建
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作者单位: Institut des Sciences de la Terre d'Orléans (ISTO), INSU-CNRS, Université d'Orléans, 1A rue de la Férolerie, 45071 Orléans Cedex 2, France; Dip. Scienze della Terra e del Mare (DiSTeM), Università di Palermo, Via Archirafi 22, 90123 Palermo, Italy; Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione di Palermo, Via U. La Malfa 153, 90146 Palermo, Italy
Recommended Citation:
Scaillet S.,Vita-Scaillet G.,Rotolo S.G.. Millennial-scale phase relationships between ice-core and Mediterranean marine records: Insights from high-precision 40Ar/39Ar dating of the Green Tuff of Pantelleria, Sicily Strait[J]. Quaternary Science Reviews,2013-01-01,78