Millennial-scale phase relationships between ice-core andMediterranean marine records: insights from high-precision40Ar/39Ar dating of the Green Tuff of Pantelleria, Sicily Strait

Silvio Giuseppe Rotolo, Vita-Scaillet, Rotolo, Scaillet

Risultato della ricerca: Article

28 Citazioni (Scopus)

Abstract

ith the advent of annually-resolved polar ice records extending back to 70 ka, marine and continentalpaleoclimate studies have now matured into a discipline where high-quality age control is essential forputting on an equal pace layer-counted timescale models and Late Quaternary sedimentary records.High-resolution UeTh dating of speleothem records and 40Ar/39Ar dating of globally recordedgeomagnetic excursions have recently improved the time calibration of Quaternary archives, reflectingthe cross-disciplinary effort made to synchronize the geologic record at the millennial scale. Yet, tiepointswith such an absolute age control remain scarce for paleoclimatic time-series extendingbeyond the radiocarbon timescale, most notably in the marine record. Far-travelled tephra layersrecorded both onland and offshore provide an alternative in such instance to synchronize continentaland marine archives via high-resolution 40Ar/39Ar dating of the parent volcanic eruption. High-resolution40Ar/39Ar data are reported herein for one such volcanic marker, the Green Tuff of Pantelleria and its Y-6tephra equivalent recorded throughout the Central and Eastern Mediterranean. Published radiochronometricand d18O orbitally-tied ages for this marker horizon scatter widely from about 41 ka up to56 ka. Our new 40Ar/39Ar age at 45.7 1.0 ka (2s) reveals that previous estimates are biased by morethan their reported errors would suggest, including recent orbital tuning of marine records hosting thetephra bed that are reevaluated in the context of this study. This improved estimate enables potentialphase lags and leads to be studied between deep-sea and terrestrial archives with unrivaled (nearmillennial)40Ar/39Ar precision in the marine record.
Lingua originaleUndefined/Unknown
pagine (da-a)141-154
Numero di pagine14
RivistaQuaternary Science Reviews
Volume78
Stato di pubblicazionePublished - 2013

All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Ecology, Evolution, Behavior and Systematics
  • Archaeology
  • Archaeology
  • Geology

Cita questo

@article{3930bbe9294f4458bf70e4138aee24c5,
title = "Millennial-scale phase relationships between ice-core andMediterranean marine records: insights from high-precision40Ar/39Ar dating of the Green Tuff of Pantelleria, Sicily Strait",
abstract = "ith the advent of annually-resolved polar ice records extending back to 70 ka, marine and continentalpaleoclimate studies have now matured into a discipline where high-quality age control is essential forputting on an equal pace layer-counted timescale models and Late Quaternary sedimentary records.High-resolution UeTh dating of speleothem records and 40Ar/39Ar dating of globally recordedgeomagnetic excursions have recently improved the time calibration of Quaternary archives, reflectingthe cross-disciplinary effort made to synchronize the geologic record at the millennial scale. Yet, tiepointswith such an absolute age control remain scarce for paleoclimatic time-series extendingbeyond the radiocarbon timescale, most notably in the marine record. Far-travelled tephra layersrecorded both onland and offshore provide an alternative in such instance to synchronize continentaland marine archives via high-resolution 40Ar/39Ar dating of the parent volcanic eruption. High-resolution40Ar/39Ar data are reported herein for one such volcanic marker, the Green Tuff of Pantelleria and its Y-6tephra equivalent recorded throughout the Central and Eastern Mediterranean. Published radiochronometricand d18O orbitally-tied ages for this marker horizon scatter widely from about 41 ka up to56 ka. Our new 40Ar/39Ar age at 45.7 1.0 ka (2s) reveals that previous estimates are biased by morethan their reported errors would suggest, including recent orbital tuning of marine records hosting thetephra bed that are reevaluated in the context of this study. This improved estimate enables potentialphase lags and leads to be studied between deep-sea and terrestrial archives with unrivaled (nearmillennial)40Ar/39Ar precision in the marine record.",
keywords = "Ar/Ar dating, Green Tuff, Pantelleria, Radioisotopic timescale, Tephrochronology",
author = "Rotolo, {Silvio Giuseppe} and Vita-Scaillet and Rotolo and Scaillet",
year = "2013",
language = "Undefined/Unknown",
volume = "78",
pages = "141--154",
journal = "Quaternary Science Reviews",
issn = "0277-3791",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Millennial-scale phase relationships between ice-core andMediterranean marine records: insights from high-precision40Ar/39Ar dating of the Green Tuff of Pantelleria, Sicily Strait

AU - Rotolo, Silvio Giuseppe

AU - Vita-Scaillet, null

AU - Rotolo, null

AU - Scaillet, null

PY - 2013

Y1 - 2013

N2 - ith the advent of annually-resolved polar ice records extending back to 70 ka, marine and continentalpaleoclimate studies have now matured into a discipline where high-quality age control is essential forputting on an equal pace layer-counted timescale models and Late Quaternary sedimentary records.High-resolution UeTh dating of speleothem records and 40Ar/39Ar dating of globally recordedgeomagnetic excursions have recently improved the time calibration of Quaternary archives, reflectingthe cross-disciplinary effort made to synchronize the geologic record at the millennial scale. Yet, tiepointswith such an absolute age control remain scarce for paleoclimatic time-series extendingbeyond the radiocarbon timescale, most notably in the marine record. Far-travelled tephra layersrecorded both onland and offshore provide an alternative in such instance to synchronize continentaland marine archives via high-resolution 40Ar/39Ar dating of the parent volcanic eruption. High-resolution40Ar/39Ar data are reported herein for one such volcanic marker, the Green Tuff of Pantelleria and its Y-6tephra equivalent recorded throughout the Central and Eastern Mediterranean. Published radiochronometricand d18O orbitally-tied ages for this marker horizon scatter widely from about 41 ka up to56 ka. Our new 40Ar/39Ar age at 45.7 1.0 ka (2s) reveals that previous estimates are biased by morethan their reported errors would suggest, including recent orbital tuning of marine records hosting thetephra bed that are reevaluated in the context of this study. This improved estimate enables potentialphase lags and leads to be studied between deep-sea and terrestrial archives with unrivaled (nearmillennial)40Ar/39Ar precision in the marine record.

AB - ith the advent of annually-resolved polar ice records extending back to 70 ka, marine and continentalpaleoclimate studies have now matured into a discipline where high-quality age control is essential forputting on an equal pace layer-counted timescale models and Late Quaternary sedimentary records.High-resolution UeTh dating of speleothem records and 40Ar/39Ar dating of globally recordedgeomagnetic excursions have recently improved the time calibration of Quaternary archives, reflectingthe cross-disciplinary effort made to synchronize the geologic record at the millennial scale. Yet, tiepointswith such an absolute age control remain scarce for paleoclimatic time-series extendingbeyond the radiocarbon timescale, most notably in the marine record. Far-travelled tephra layersrecorded both onland and offshore provide an alternative in such instance to synchronize continentaland marine archives via high-resolution 40Ar/39Ar dating of the parent volcanic eruption. High-resolution40Ar/39Ar data are reported herein for one such volcanic marker, the Green Tuff of Pantelleria and its Y-6tephra equivalent recorded throughout the Central and Eastern Mediterranean. Published radiochronometricand d18O orbitally-tied ages for this marker horizon scatter widely from about 41 ka up to56 ka. Our new 40Ar/39Ar age at 45.7 1.0 ka (2s) reveals that previous estimates are biased by morethan their reported errors would suggest, including recent orbital tuning of marine records hosting thetephra bed that are reevaluated in the context of this study. This improved estimate enables potentialphase lags and leads to be studied between deep-sea and terrestrial archives with unrivaled (nearmillennial)40Ar/39Ar precision in the marine record.

KW - Ar/Ar dating

KW - Green Tuff

KW - Pantelleria

KW - Radioisotopic timescale

KW - Tephrochronology

UR - http://hdl.handle.net/10447/82775

M3 - Article

VL - 78

SP - 141

EP - 154

JO - Quaternary Science Reviews

JF - Quaternary Science Reviews

SN - 0277-3791

ER -