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Dynamics of sediment flux to a bathyal continental margin section through the Paleocene-Eocene Thermal Maximum

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Dynamics of sediment flux to a bathyal continental margin section through the Paleocene-Eocene Thermal Maximum. / Dunkley Jones, Tom; Manners, Hayley R.; Hoggett, Murray; Turner, Sandra Kirtland; Westerhold, Thomas; Leng, Melanie J.; Pancost, Richard D.; Ridgwell, Andy; Alegret, Laia; Duller, Rob; Grimes, Stephen T.

In: Climate of the Past, Vol. 14, No. 7, 07.2018, p. 1035-1049.

Research output: Contribution to journalArticle

Harvard

Dunkley Jones, T, Manners, HR, Hoggett, M, Turner, SK, Westerhold, T, Leng, MJ, Pancost, RD, Ridgwell, A, Alegret, L, Duller, R & Grimes, ST 2018, 'Dynamics of sediment flux to a bathyal continental margin section through the Paleocene-Eocene Thermal Maximum', Climate of the Past, vol. 14, no. 7, pp. 1035-1049. https://doi.org/10.5194/cp-14-1035-2018

APA

Dunkley Jones, T., Manners, H. R., Hoggett, M., Turner, S. K., Westerhold, T., Leng, M. J., ... Grimes, S. T. (2018). Dynamics of sediment flux to a bathyal continental margin section through the Paleocene-Eocene Thermal Maximum. Climate of the Past, 14(7), 1035-1049. https://doi.org/10.5194/cp-14-1035-2018

Vancouver

Dunkley Jones T, Manners HR, Hoggett M, Turner SK, Westerhold T, Leng MJ et al. Dynamics of sediment flux to a bathyal continental margin section through the Paleocene-Eocene Thermal Maximum. Climate of the Past. 2018 Jul;14(7):1035-1049. https://doi.org/10.5194/cp-14-1035-2018

Author

Dunkley Jones, Tom ; Manners, Hayley R. ; Hoggett, Murray ; Turner, Sandra Kirtland ; Westerhold, Thomas ; Leng, Melanie J. ; Pancost, Richard D. ; Ridgwell, Andy ; Alegret, Laia ; Duller, Rob ; Grimes, Stephen T. / Dynamics of sediment flux to a bathyal continental margin section through the Paleocene-Eocene Thermal Maximum. In: Climate of the Past. 2018 ; Vol. 14, No. 7. pp. 1035-1049.

Bibtex

@article{6b71d19046a5444586bda3c90fed7d9d,
title = "Dynamics of sediment flux to a bathyal continental margin section through the Paleocene-Eocene Thermal Maximum",
abstract = "The response of the Earth system to greenhouse-gas-driven warming is of critical importance for the future trajectory of our planetary environment. Hyperthermal events - past climate transients with global-scale warming significantly above background climate variability - can provide insights into the nature and magnitude of these responses. The largest hyperthermal of the Cenozoic was the Paleocene-Eocene Thermal Maximum (PETM ∼ 56 Ma). Here we present new high-resolution bulk sediment stable isotope and major element data for the classic PETM section at Zumaia, Spain. With these data we provide a new detailed stratigraphic correlation to other key deep-ocean and terrestrial PETM reference sections. With this new correlation and age model we are able to demonstrate that detrital sediment accumulation rates within the Zumaia continental margin section increased more than 4-fold during the PETM, representing a radical change in regional hydrology that drove dramatic increases in terrestrial-to-marine sediment flux. Most remarkable is that detrital accumulation rates remain high throughout the body of the PETM, and even reach peak values during the recovery phase of the characteristic PETM carbon isotope excursion (CIE). Using a series of Earth system model inversions, driven by the new Zumaia carbon isotope record, we demonstrate that the silicate weathering feedback alone is insufficient to recover the PETM CIE, and that active organic carbon burial is required to match the observed dynamics of the CIE. Further, we demonstrate that the period of maximum organic carbon sequestration coincides with the peak in detrital accumulation rates observed at Zumaia. Based on these results, we hypothesise that orbital-scale variations in subtropical hydro-climates, and their subsequent impact on sediment dynamics, may contribute to the rapid climate and CIE recovery from peak-PETM conditions.",
author = "{Dunkley Jones}, Tom and Manners, {Hayley R.} and Murray Hoggett and Turner, {Sandra Kirtland} and Thomas Westerhold and Leng, {Melanie J.} and Pancost, {Richard D.} and Andy Ridgwell and Laia Alegret and Rob Duller and Grimes, {Stephen T.}",
year = "2018",
month = "7",
doi = "10.5194/cp-14-1035-2018",
language = "English",
volume = "14",
pages = "1035--1049",
journal = "Climate of the Past",
issn = "1814-9324",
publisher = "Copernicus GmbH",
number = "7",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Dynamics of sediment flux to a bathyal continental margin section through the Paleocene-Eocene Thermal Maximum

AU - Dunkley Jones, Tom

AU - Manners, Hayley R.

AU - Hoggett, Murray

AU - Turner, Sandra Kirtland

AU - Westerhold, Thomas

AU - Leng, Melanie J.

AU - Pancost, Richard D.

AU - Ridgwell, Andy

AU - Alegret, Laia

AU - Duller, Rob

AU - Grimes, Stephen T.

PY - 2018/7

Y1 - 2018/7

N2 - The response of the Earth system to greenhouse-gas-driven warming is of critical importance for the future trajectory of our planetary environment. Hyperthermal events - past climate transients with global-scale warming significantly above background climate variability - can provide insights into the nature and magnitude of these responses. The largest hyperthermal of the Cenozoic was the Paleocene-Eocene Thermal Maximum (PETM ∼ 56 Ma). Here we present new high-resolution bulk sediment stable isotope and major element data for the classic PETM section at Zumaia, Spain. With these data we provide a new detailed stratigraphic correlation to other key deep-ocean and terrestrial PETM reference sections. With this new correlation and age model we are able to demonstrate that detrital sediment accumulation rates within the Zumaia continental margin section increased more than 4-fold during the PETM, representing a radical change in regional hydrology that drove dramatic increases in terrestrial-to-marine sediment flux. Most remarkable is that detrital accumulation rates remain high throughout the body of the PETM, and even reach peak values during the recovery phase of the characteristic PETM carbon isotope excursion (CIE). Using a series of Earth system model inversions, driven by the new Zumaia carbon isotope record, we demonstrate that the silicate weathering feedback alone is insufficient to recover the PETM CIE, and that active organic carbon burial is required to match the observed dynamics of the CIE. Further, we demonstrate that the period of maximum organic carbon sequestration coincides with the peak in detrital accumulation rates observed at Zumaia. Based on these results, we hypothesise that orbital-scale variations in subtropical hydro-climates, and their subsequent impact on sediment dynamics, may contribute to the rapid climate and CIE recovery from peak-PETM conditions.

AB - The response of the Earth system to greenhouse-gas-driven warming is of critical importance for the future trajectory of our planetary environment. Hyperthermal events - past climate transients with global-scale warming significantly above background climate variability - can provide insights into the nature and magnitude of these responses. The largest hyperthermal of the Cenozoic was the Paleocene-Eocene Thermal Maximum (PETM ∼ 56 Ma). Here we present new high-resolution bulk sediment stable isotope and major element data for the classic PETM section at Zumaia, Spain. With these data we provide a new detailed stratigraphic correlation to other key deep-ocean and terrestrial PETM reference sections. With this new correlation and age model we are able to demonstrate that detrital sediment accumulation rates within the Zumaia continental margin section increased more than 4-fold during the PETM, representing a radical change in regional hydrology that drove dramatic increases in terrestrial-to-marine sediment flux. Most remarkable is that detrital accumulation rates remain high throughout the body of the PETM, and even reach peak values during the recovery phase of the characteristic PETM carbon isotope excursion (CIE). Using a series of Earth system model inversions, driven by the new Zumaia carbon isotope record, we demonstrate that the silicate weathering feedback alone is insufficient to recover the PETM CIE, and that active organic carbon burial is required to match the observed dynamics of the CIE. Further, we demonstrate that the period of maximum organic carbon sequestration coincides with the peak in detrital accumulation rates observed at Zumaia. Based on these results, we hypothesise that orbital-scale variations in subtropical hydro-climates, and their subsequent impact on sediment dynamics, may contribute to the rapid climate and CIE recovery from peak-PETM conditions.

UR - http://www.scopus.com/inward/record.url?scp=85049900359&partnerID=8YFLogxK

U2 - 10.5194/cp-14-1035-2018

DO - 10.5194/cp-14-1035-2018

M3 - Article

AN - SCOPUS:85049900359

VL - 14

SP - 1035

EP - 1049

JO - Climate of the Past

JF - Climate of the Past

SN - 1814-9324

IS - 7

ER -