Astronomical calibration of the OAE1b from the Col de Pré-Guittard section (Aptian–Albian), Vocontian Basin, France

Fatima Zahra Ait-Itto; Mathieu Martinez; Jean François Deconinck; Stéphane Bodin

doi:10.1016/j.cretres.2023.105618

Astronomical calibration of the OAE1b from the Col de Pré-Guittard section (Aptian–Albian), Vocontian Basin, France

Fatima Zahra Ait-Itto^*, Mathieu Martinez, Jean François Deconinck, Stéphane Bodin

^*Corresponding author af dette arbejde

Institut for Geoscience

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

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Abstract

A high-resolution spectral analysis was performed on magnetic susceptibility (MS) in the Col de Pré-Guittard section (CPG), Vocontian Basin, France to provide a new astronomical time scale of the Aptian–Albian transition and to explore the link between Milankovitch cycles and the occurrence of four laminated black shales events, namely Jacob, Kilian, Paquier and Leenhardt constituting the OAE 1b. The spectral analysis performed on the CPG section records the imprint of a strong predominance of the precession, and 100-kyr and 405-kyr eccentricity cycles. Based on the number of 405-kyr eccentricity cycles, the duration of the interval encompassing the Jacob to Leenhardt levels is calculated at 4.03 myr. The duration between Jacob, Kilian, Paquier and Leenhardt Events are respectively calculated at 1.55 myr, 1.62 myr, and 0.93 myr. The duration calculated for the occurrence of these events is not related to the Milankovitch cycles. However, these events are recorded near local maxima of the 405-kyr filter. Our results show that the 405-kyr eccentricity impacted the recurrence of anoxic levels in the Vocontian Basin, although additional factors, such as the emplacement of flood basalts or oceanic basaltic plateaus have contributed to the development of larger scale marine anoxia.

Originalsprog	Engelsk
Artikelnummer	105618
Tidsskrift	Cretaceous Research
Vol/bind	150
Antal sider	19
ISSN	0195-6671
DOI	https://doi.org/10.1016/j.cretres.2023.105618
Status	Udgivet - okt. 2023

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@article{a684e6e58db34547a21fec185b32f637,

title = "Astronomical calibration of the OAE1b from the Col de Pr{\'e}-Guittard section (Aptian–Albian), Vocontian Basin, France",

abstract = "A high-resolution spectral analysis was performed on magnetic susceptibility (MS) in the Col de Pr{\'e}-Guittard section (CPG), Vocontian Basin, France to provide a new astronomical time scale of the Aptian–Albian transition and to explore the link between Milankovitch cycles and the occurrence of four laminated black shales events, namely Jacob, Kilian, Paquier and Leenhardt constituting the OAE 1b. The spectral analysis performed on the CPG section records the imprint of a strong predominance of the precession, and 100-kyr and 405-kyr eccentricity cycles. Based on the number of 405-kyr eccentricity cycles, the duration of the interval encompassing the Jacob to Leenhardt levels is calculated at 4.03 myr. The duration between Jacob, Kilian, Paquier and Leenhardt Events are respectively calculated at 1.55 myr, 1.62 myr, and 0.93 myr. The duration calculated for the occurrence of these events is not related to the Milankovitch cycles. However, these events are recorded near local maxima of the 405-kyr filter. Our results show that the 405-kyr eccentricity impacted the recurrence of anoxic levels in the Vocontian Basin, although additional factors, such as the emplacement of flood basalts or oceanic basaltic plateaus have contributed to the development of larger scale marine anoxia.",

keywords = "Aptian–Albian, Cyclostratigraphy, Magnetic susceptibility, OAE1b, Vocontian Basin",

author = "Ait-Itto, {Fatima Zahra} and Mathieu Martinez and Deconinck, {Jean Fran{\c c}ois} and St{\'e}phane Bodin",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = oct,

doi = "10.1016/j.cretres.2023.105618",

language = "English",

volume = "150",

journal = "Cretaceous Research",

issn = "0195-6671",

publisher = "Academic Press",

}

Astronomical calibration of the OAE1b from the Col de Pré-Guittard section (Aptian–Albian), Vocontian Basin, France. / Ait-Itto, Fatima Zahra; Martinez, Mathieu; Deconinck, Jean François et al.
I: Cretaceous Research, Bind 150, 105618, 10.2023.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

TY - JOUR

T1 - Astronomical calibration of the OAE1b from the Col de Pré-Guittard section (Aptian–Albian), Vocontian Basin, France

AU - Ait-Itto, Fatima Zahra

AU - Martinez, Mathieu

AU - Deconinck, Jean François

AU - Bodin, Stéphane

PY - 2023/10

Y1 - 2023/10

N2 - A high-resolution spectral analysis was performed on magnetic susceptibility (MS) in the Col de Pré-Guittard section (CPG), Vocontian Basin, France to provide a new astronomical time scale of the Aptian–Albian transition and to explore the link between Milankovitch cycles and the occurrence of four laminated black shales events, namely Jacob, Kilian, Paquier and Leenhardt constituting the OAE 1b. The spectral analysis performed on the CPG section records the imprint of a strong predominance of the precession, and 100-kyr and 405-kyr eccentricity cycles. Based on the number of 405-kyr eccentricity cycles, the duration of the interval encompassing the Jacob to Leenhardt levels is calculated at 4.03 myr. The duration between Jacob, Kilian, Paquier and Leenhardt Events are respectively calculated at 1.55 myr, 1.62 myr, and 0.93 myr. The duration calculated for the occurrence of these events is not related to the Milankovitch cycles. However, these events are recorded near local maxima of the 405-kyr filter. Our results show that the 405-kyr eccentricity impacted the recurrence of anoxic levels in the Vocontian Basin, although additional factors, such as the emplacement of flood basalts or oceanic basaltic plateaus have contributed to the development of larger scale marine anoxia.

AB - A high-resolution spectral analysis was performed on magnetic susceptibility (MS) in the Col de Pré-Guittard section (CPG), Vocontian Basin, France to provide a new astronomical time scale of the Aptian–Albian transition and to explore the link between Milankovitch cycles and the occurrence of four laminated black shales events, namely Jacob, Kilian, Paquier and Leenhardt constituting the OAE 1b. The spectral analysis performed on the CPG section records the imprint of a strong predominance of the precession, and 100-kyr and 405-kyr eccentricity cycles. Based on the number of 405-kyr eccentricity cycles, the duration of the interval encompassing the Jacob to Leenhardt levels is calculated at 4.03 myr. The duration between Jacob, Kilian, Paquier and Leenhardt Events are respectively calculated at 1.55 myr, 1.62 myr, and 0.93 myr. The duration calculated for the occurrence of these events is not related to the Milankovitch cycles. However, these events are recorded near local maxima of the 405-kyr filter. Our results show that the 405-kyr eccentricity impacted the recurrence of anoxic levels in the Vocontian Basin, although additional factors, such as the emplacement of flood basalts or oceanic basaltic plateaus have contributed to the development of larger scale marine anoxia.

KW - Aptian–Albian

KW - Cyclostratigraphy

KW - Magnetic susceptibility

KW - OAE1b

KW - Vocontian Basin

UR - http://www.scopus.com/inward/record.url?scp=85163413892&partnerID=8YFLogxK

U2 - 10.1016/j.cretres.2023.105618

DO - 10.1016/j.cretres.2023.105618

M3 - Journal article

AN - SCOPUS:85163413892

SN - 0195-6671

VL - 150

JO - Cretaceous Research

JF - Cretaceous Research

M1 - 105618

ER -

Astronomical calibration of the OAE1b from the Col de Pré-Guittard section (Aptian–Albian), Vocontian Basin, France

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