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    Rights statement: This is the author’s version of a work that was accepted for publication in Palaeogeography, Palaeoclimatology, Palaeoecology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Palaeogeography, Palaeoclimatology, Palaeoecology, 567, 2021 DOI: 10.1016/j.palaeo.2021.110225

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A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician

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A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician. / Hounslow, M.W.; Harris, S.E.; Wójcik, K. et al.
In: Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 567, 110225, 01.04.2021.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Hounslow, MW, Harris, SE, Wójcik, K, Nawrocki, J, Ratcliffe, KT, Woodcock, NH & Montgomery, P 2021, 'A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician', Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 567, 110225. https://doi.org/10.1016/j.palaeo.2021.110225

APA

Hounslow, M. W., Harris, S. E., Wójcik, K., Nawrocki, J., Ratcliffe, K. T., Woodcock, N. H., & Montgomery, P. (2021). A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician. Palaeogeography, Palaeoclimatology, Palaeoecology, 567, Article 110225. https://doi.org/10.1016/j.palaeo.2021.110225

Vancouver

Hounslow MW, Harris SE, Wójcik K, Nawrocki J, Ratcliffe KT, Woodcock NH et al. A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician. Palaeogeography, Palaeoclimatology, Palaeoecology. 2021 Apr 1;567:110225. Epub 2021 Jan 13. doi: 10.1016/j.palaeo.2021.110225

Author

Hounslow, M.W. ; Harris, S.E. ; Wójcik, K. et al. / A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician. In: Palaeogeography, Palaeoclimatology, Palaeoecology. 2021 ; Vol. 567.

Bibtex

@article{39ca1b887de94322b0522e802af44f30,
title = "A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician",
abstract = "Magnetostratigraphic studies of the Ordovician provide evidence for the nature of core-mantle boundary interactions, and provide means for dating and correlation across differing environmental regimes. We provide new magnetostratigraphic data from the Middle and Upper Ordovician, compiling this into a polarity chronostratigraphic scale for the Dapingian to Hirnantian interval. The new data are derived from the Backside Beck and Cheney Longville sections in Britain, the M{\'o}jcza section in Poland and two cores from Poland and Lithuania. The chronology is provided by existing biostratigraphy, principally based on chitinozoans and conodonts for the Ordovician. Correlations between sections are supported by carbon isotope stratigraphy linked to Baltic isotopic zonations, along with lithological and local magnetic susceptibility correlations in Polish cores. The palaeomagnetic signal is carried by both haematite and magnetite, with haematite dominating in red-coloured lithologies (marls and limestones) and magnetite in non-red mudstones and limestones. A positive reversal test (class C) in the Cheney Longville section and positive fold tests in the Backside Beck section provide validation of the isolation of a primary palaeomagnetic signal. Palaeomagnetic directions from cores were re-oriented using Kiaman-age and Brunhes overprints. These new datasets in combination with existing Middle Ordovician data provides a near-complete magnetic polarity chronostratigraphic scale through the Middle and Upper Ordovician. Brief normal-polarity magnetozones extend well into the later parts of what has been considered the Moyero Superchron, which started in the late Tremadocian. Reversal frequencies for the mid and late Ordovician are 1.7 and 1.5 Myr−1 respectively, although that for the late Ordovician may be an underestimate. ",
keywords = "Chronostratigraphy, Magnetostratigraphy, Moyero, Palaeomagnetic, Reversal frequency, Superchron",
author = "M.W. Hounslow and S.E. Harris and K. W{\'o}jcik and J. Nawrocki and K.T. Ratcliffe and N.H. Woodcock and P. Montgomery",
note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Palaeogeography, Palaeoclimatology, Palaeoecology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Palaeogeography, Palaeoclimatology, Palaeoecology, 567, 2021 DOI: 10.1016/j.palaeo.2021.110225",
year = "2021",
month = apr,
day = "1",
doi = "10.1016/j.palaeo.2021.110225",
language = "English",
volume = "567",
journal = "Palaeogeography, Palaeoclimatology, Palaeoecology",
issn = "0031-0182",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician

AU - Hounslow, M.W.

AU - Harris, S.E.

AU - Wójcik, K.

AU - Nawrocki, J.

AU - Ratcliffe, K.T.

AU - Woodcock, N.H.

AU - Montgomery, P.

N1 - This is the author’s version of a work that was accepted for publication in Palaeogeography, Palaeoclimatology, Palaeoecology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Palaeogeography, Palaeoclimatology, Palaeoecology, 567, 2021 DOI: 10.1016/j.palaeo.2021.110225

PY - 2021/4/1

Y1 - 2021/4/1

N2 - Magnetostratigraphic studies of the Ordovician provide evidence for the nature of core-mantle boundary interactions, and provide means for dating and correlation across differing environmental regimes. We provide new magnetostratigraphic data from the Middle and Upper Ordovician, compiling this into a polarity chronostratigraphic scale for the Dapingian to Hirnantian interval. The new data are derived from the Backside Beck and Cheney Longville sections in Britain, the Mójcza section in Poland and two cores from Poland and Lithuania. The chronology is provided by existing biostratigraphy, principally based on chitinozoans and conodonts for the Ordovician. Correlations between sections are supported by carbon isotope stratigraphy linked to Baltic isotopic zonations, along with lithological and local magnetic susceptibility correlations in Polish cores. The palaeomagnetic signal is carried by both haematite and magnetite, with haematite dominating in red-coloured lithologies (marls and limestones) and magnetite in non-red mudstones and limestones. A positive reversal test (class C) in the Cheney Longville section and positive fold tests in the Backside Beck section provide validation of the isolation of a primary palaeomagnetic signal. Palaeomagnetic directions from cores were re-oriented using Kiaman-age and Brunhes overprints. These new datasets in combination with existing Middle Ordovician data provides a near-complete magnetic polarity chronostratigraphic scale through the Middle and Upper Ordovician. Brief normal-polarity magnetozones extend well into the later parts of what has been considered the Moyero Superchron, which started in the late Tremadocian. Reversal frequencies for the mid and late Ordovician are 1.7 and 1.5 Myr−1 respectively, although that for the late Ordovician may be an underestimate.

AB - Magnetostratigraphic studies of the Ordovician provide evidence for the nature of core-mantle boundary interactions, and provide means for dating and correlation across differing environmental regimes. We provide new magnetostratigraphic data from the Middle and Upper Ordovician, compiling this into a polarity chronostratigraphic scale for the Dapingian to Hirnantian interval. The new data are derived from the Backside Beck and Cheney Longville sections in Britain, the Mójcza section in Poland and two cores from Poland and Lithuania. The chronology is provided by existing biostratigraphy, principally based on chitinozoans and conodonts for the Ordovician. Correlations between sections are supported by carbon isotope stratigraphy linked to Baltic isotopic zonations, along with lithological and local magnetic susceptibility correlations in Polish cores. The palaeomagnetic signal is carried by both haematite and magnetite, with haematite dominating in red-coloured lithologies (marls and limestones) and magnetite in non-red mudstones and limestones. A positive reversal test (class C) in the Cheney Longville section and positive fold tests in the Backside Beck section provide validation of the isolation of a primary palaeomagnetic signal. Palaeomagnetic directions from cores were re-oriented using Kiaman-age and Brunhes overprints. These new datasets in combination with existing Middle Ordovician data provides a near-complete magnetic polarity chronostratigraphic scale through the Middle and Upper Ordovician. Brief normal-polarity magnetozones extend well into the later parts of what has been considered the Moyero Superchron, which started in the late Tremadocian. Reversal frequencies for the mid and late Ordovician are 1.7 and 1.5 Myr−1 respectively, although that for the late Ordovician may be an underestimate.

KW - Chronostratigraphy

KW - Magnetostratigraphy

KW - Moyero

KW - Palaeomagnetic

KW - Reversal frequency

KW - Superchron

U2 - 10.1016/j.palaeo.2021.110225

DO - 10.1016/j.palaeo.2021.110225

M3 - Journal article

VL - 567

JO - Palaeogeography, Palaeoclimatology, Palaeoecology

JF - Palaeogeography, Palaeoclimatology, Palaeoecology

SN - 0031-0182

M1 - 110225

ER -