Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2. / Clarkson, Matthew; Stirling, Claudine; Jenkyns, Hugh C.; Dickson, Alexander; Porcelli, Donald; Moy, Christopher; Pogge van Strandmann, Philip; Cooke, Ilsa; Lenton, Tim.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 115, No. 12, 20.03.2018, p. 2918-2923.

Research output: Contribution to journalArticlepeer-review

Published

Standard

Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2. / Clarkson, Matthew; Stirling, Claudine; Jenkyns, Hugh C.; Dickson, Alexander; Porcelli, Donald; Moy, Christopher; Pogge van Strandmann, Philip; Cooke, Ilsa; Lenton, Tim.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 115, No. 12, 20.03.2018, p. 2918-2923.

Research output: Contribution to journalArticlepeer-review

Harvard

Clarkson, M, Stirling, C, Jenkyns, HC, Dickson, A, Porcelli, D, Moy, C, Pogge van Strandmann, P, Cooke, I & Lenton, T 2018, 'Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2', Proceedings of the National Academy of Sciences of the United States of America, vol. 115, no. 12, pp. 2918-2923. https://doi.org/10.1073/pnas.1715278115

APA

Clarkson, M., Stirling, C., Jenkyns, H. C., Dickson, A., Porcelli, D., Moy, C., Pogge van Strandmann, P., Cooke, I., & Lenton, T. (2018). Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2. Proceedings of the National Academy of Sciences of the United States of America, 115(12), 2918-2923. https://doi.org/10.1073/pnas.1715278115

Vancouver

Clarkson M, Stirling C, Jenkyns HC, Dickson A, Porcelli D, Moy C et al. Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2. Proceedings of the National Academy of Sciences of the United States of America. 2018 Mar 20;115(12):2918-2923. https://doi.org/10.1073/pnas.1715278115

Author

Clarkson, Matthew ; Stirling, Claudine ; Jenkyns, Hugh C. ; Dickson, Alexander ; Porcelli, Donald ; Moy, Christopher ; Pogge van Strandmann, Philip ; Cooke, Ilsa ; Lenton, Tim. / Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2. In: Proceedings of the National Academy of Sciences of the United States of America. 2018 ; Vol. 115, No. 12. pp. 2918-2923.

BibTeX

@article{f7c7e5e21d0141b4b98629249311dd82,
title = "Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2",
abstract = "Oceanic Anoxic Event 2 (OAE 2), occurring ~94 million years ago, was one of the most extreme carbon cycle and climatic perturbations of the Phanerozoic Eon. It was typified by a rapid rise in atmospheric CO2, global warming, and marine anoxia, leading to the widespread devastation of marine ecosystems. However, the precise timing and extent to which oceanic anoxic conditions expanded during OAE 2 remains unresolved. We present a new record of global ocean redox changes during OAE 2 using a combined geochemical and carbon cycle modelling approach. We utilize a continuous, high-resolution record of uranium isotopes in pelagic and platform-carbonate sediments to quantify the global extent of seafloor anoxia during OAE 2. This new dataset is then compared to a dynamic model of the coupled global carbon, phosphorus and uranium cycles to test hypotheses for OAE 2 initiation. This unique approach highlights an intra-OAE complexity that has previously been under constrained, characterized by two expansions of anoxia separated by an episode of globally significant reoxygenation coincident with the {\textquoteleft}Plenus Cold Event{\textquoteright}. Each anoxic expansion event was likely driven by rapid atmospheric CO2 injections from multi-phase Large Igneous Province (LIP) activity. ",
author = "Matthew Clarkson and Claudine Stirling and Jenkyns, {Hugh C.} and Alexander Dickson and Donald Porcelli and Christopher Moy and {Pogge van Strandmann}, Philip and Ilsa Cooke and Tim Lenton",
year = "2018",
month = mar,
day = "20",
doi = "10.1073/pnas.1715278115",
language = "English",
volume = "115",
pages = "2918--2923",
journal = " Proceedings of the National Academy of Sciences of the United States of America",
issn = "0027-8424",
publisher = "National Academy of Sciences",
number = "12",

}

RIS

TY - JOUR

T1 - Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2

AU - Clarkson, Matthew

AU - Stirling, Claudine

AU - Jenkyns, Hugh C.

AU - Dickson, Alexander

AU - Porcelli, Donald

AU - Moy, Christopher

AU - Pogge van Strandmann, Philip

AU - Cooke, Ilsa

AU - Lenton, Tim

PY - 2018/3/20

Y1 - 2018/3/20

N2 - Oceanic Anoxic Event 2 (OAE 2), occurring ~94 million years ago, was one of the most extreme carbon cycle and climatic perturbations of the Phanerozoic Eon. It was typified by a rapid rise in atmospheric CO2, global warming, and marine anoxia, leading to the widespread devastation of marine ecosystems. However, the precise timing and extent to which oceanic anoxic conditions expanded during OAE 2 remains unresolved. We present a new record of global ocean redox changes during OAE 2 using a combined geochemical and carbon cycle modelling approach. We utilize a continuous, high-resolution record of uranium isotopes in pelagic and platform-carbonate sediments to quantify the global extent of seafloor anoxia during OAE 2. This new dataset is then compared to a dynamic model of the coupled global carbon, phosphorus and uranium cycles to test hypotheses for OAE 2 initiation. This unique approach highlights an intra-OAE complexity that has previously been under constrained, characterized by two expansions of anoxia separated by an episode of globally significant reoxygenation coincident with the ‘Plenus Cold Event’. Each anoxic expansion event was likely driven by rapid atmospheric CO2 injections from multi-phase Large Igneous Province (LIP) activity.

AB - Oceanic Anoxic Event 2 (OAE 2), occurring ~94 million years ago, was one of the most extreme carbon cycle and climatic perturbations of the Phanerozoic Eon. It was typified by a rapid rise in atmospheric CO2, global warming, and marine anoxia, leading to the widespread devastation of marine ecosystems. However, the precise timing and extent to which oceanic anoxic conditions expanded during OAE 2 remains unresolved. We present a new record of global ocean redox changes during OAE 2 using a combined geochemical and carbon cycle modelling approach. We utilize a continuous, high-resolution record of uranium isotopes in pelagic and platform-carbonate sediments to quantify the global extent of seafloor anoxia during OAE 2. This new dataset is then compared to a dynamic model of the coupled global carbon, phosphorus and uranium cycles to test hypotheses for OAE 2 initiation. This unique approach highlights an intra-OAE complexity that has previously been under constrained, characterized by two expansions of anoxia separated by an episode of globally significant reoxygenation coincident with the ‘Plenus Cold Event’. Each anoxic expansion event was likely driven by rapid atmospheric CO2 injections from multi-phase Large Igneous Province (LIP) activity.

U2 - 10.1073/pnas.1715278115

DO - 10.1073/pnas.1715278115

M3 - Article

VL - 115

SP - 2918

EP - 2923

JO - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

SN - 0027-8424

IS - 12

ER -