Terrestrial environmental change across the onset of the PETM and the associated impact on biomarker proxies : A cautionary tale. / Inglis, Gordon N.; Farnsworth, Alexander; Collinson, Margaret E.; Carmichael, Matthew J.; Naafs, B. David A.; Lunt, Daniel J.; Valdes, Paul J.; Pancost, Richard D.

In: Global and Planetary Change, Vol. 181, 102991, 10.2019, p. 1-8.

Research output: Contribution to journalArticlepeer-review

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Terrestrial environmental change across the onset of the PETM and the associated impact on biomarker proxies : A cautionary tale. / Inglis, Gordon N.; Farnsworth, Alexander; Collinson, Margaret E.; Carmichael, Matthew J.; Naafs, B. David A.; Lunt, Daniel J.; Valdes, Paul J.; Pancost, Richard D.

In: Global and Planetary Change, Vol. 181, 102991, 10.2019, p. 1-8.

Research output: Contribution to journalArticlepeer-review

Harvard

Inglis, GN, Farnsworth, A, Collinson, ME, Carmichael, MJ, Naafs, BDA, Lunt, DJ, Valdes, PJ & Pancost, RD 2019, 'Terrestrial environmental change across the onset of the PETM and the associated impact on biomarker proxies: A cautionary tale', Global and Planetary Change, vol. 181, 102991, pp. 1-8. https://doi.org/10.1016/j.gloplacha.2019.102991

APA

Inglis, G. N., Farnsworth, A., Collinson, M. E., Carmichael, M. J., Naafs, B. D. A., Lunt, D. J., Valdes, P. J., & Pancost, R. D. (2019). Terrestrial environmental change across the onset of the PETM and the associated impact on biomarker proxies: A cautionary tale. Global and Planetary Change, 181, 1-8. [102991]. https://doi.org/10.1016/j.gloplacha.2019.102991

Vancouver

Author

Inglis, Gordon N. ; Farnsworth, Alexander ; Collinson, Margaret E. ; Carmichael, Matthew J. ; Naafs, B. David A. ; Lunt, Daniel J. ; Valdes, Paul J. ; Pancost, Richard D. / Terrestrial environmental change across the onset of the PETM and the associated impact on biomarker proxies : A cautionary tale. In: Global and Planetary Change. 2019 ; Vol. 181. pp. 1-8.

BibTeX

@article{260fe1c1534f46ac96837ad940f75bc2,
title = "Terrestrial environmental change across the onset of the PETM and the associated impact on biomarker proxies: A cautionary tale",
abstract = "The Paleocene-Eocene Thermal Maximum (PETM; ~ 56 million years ago) is the most severe carbon cycle perturbation event of the Cenozoic. Although the PETM is associated with warming in both the surface (up to 8 °C) and deep ocean (up to 5 °C), there are relatively few terrestrial temperature estimates from the onset of this interval. The associated response of the hydrological cycle during the PETM is also poorly constrained. Here, we use biomarker proxies (informed by models) to reconstruct temperature and hydrological change within the Cobham Lignite (UK) during the latest Paleocene and early PETM. Previous work at this site indicates warm terrestrial temperatures during the very latest Paleocene (ca. 22–26 °C). However, biomarker temperature proxies imply cooling during the onset of the PETM (ca. 5–11 °C cooling), inconsistent with other local, regional and global evidence. This coincides with an increase in pH (ca. 2 pH units with pH values >7), enhanced waterlogging, a major reduction in fires and the development of areas of open water within a peatland environment. This profound change in hydrology and environment evidently biases biomarker temperature proxies, including the branched GDGT paleothermometer. This serves as a cautionary tale on the danger of attempting to interpret biomarker proxy records without a wider understanding of their environmental context.",
keywords = "Biomarkers, Eocene, GDGTs, Hydrology, Lignite, Peat",
author = "Inglis, {Gordon N.} and Alexander Farnsworth and Collinson, {Margaret E.} and Carmichael, {Matthew J.} and Naafs, {B. David A.} and Lunt, {Daniel J.} and Valdes, {Paul J.} and Pancost, {Richard D.}",
year = "2019",
month = oct,
doi = "10.1016/j.gloplacha.2019.102991",
language = "English",
volume = "181",
pages = "1--8",
journal = "Global and Planetary Change",
issn = "0921-8181",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Terrestrial environmental change across the onset of the PETM and the associated impact on biomarker proxies

T2 - A cautionary tale

AU - Inglis, Gordon N.

AU - Farnsworth, Alexander

AU - Collinson, Margaret E.

AU - Carmichael, Matthew J.

AU - Naafs, B. David A.

AU - Lunt, Daniel J.

AU - Valdes, Paul J.

AU - Pancost, Richard D.

PY - 2019/10

Y1 - 2019/10

N2 - The Paleocene-Eocene Thermal Maximum (PETM; ~ 56 million years ago) is the most severe carbon cycle perturbation event of the Cenozoic. Although the PETM is associated with warming in both the surface (up to 8 °C) and deep ocean (up to 5 °C), there are relatively few terrestrial temperature estimates from the onset of this interval. The associated response of the hydrological cycle during the PETM is also poorly constrained. Here, we use biomarker proxies (informed by models) to reconstruct temperature and hydrological change within the Cobham Lignite (UK) during the latest Paleocene and early PETM. Previous work at this site indicates warm terrestrial temperatures during the very latest Paleocene (ca. 22–26 °C). However, biomarker temperature proxies imply cooling during the onset of the PETM (ca. 5–11 °C cooling), inconsistent with other local, regional and global evidence. This coincides with an increase in pH (ca. 2 pH units with pH values >7), enhanced waterlogging, a major reduction in fires and the development of areas of open water within a peatland environment. This profound change in hydrology and environment evidently biases biomarker temperature proxies, including the branched GDGT paleothermometer. This serves as a cautionary tale on the danger of attempting to interpret biomarker proxy records without a wider understanding of their environmental context.

AB - The Paleocene-Eocene Thermal Maximum (PETM; ~ 56 million years ago) is the most severe carbon cycle perturbation event of the Cenozoic. Although the PETM is associated with warming in both the surface (up to 8 °C) and deep ocean (up to 5 °C), there are relatively few terrestrial temperature estimates from the onset of this interval. The associated response of the hydrological cycle during the PETM is also poorly constrained. Here, we use biomarker proxies (informed by models) to reconstruct temperature and hydrological change within the Cobham Lignite (UK) during the latest Paleocene and early PETM. Previous work at this site indicates warm terrestrial temperatures during the very latest Paleocene (ca. 22–26 °C). However, biomarker temperature proxies imply cooling during the onset of the PETM (ca. 5–11 °C cooling), inconsistent with other local, regional and global evidence. This coincides with an increase in pH (ca. 2 pH units with pH values >7), enhanced waterlogging, a major reduction in fires and the development of areas of open water within a peatland environment. This profound change in hydrology and environment evidently biases biomarker temperature proxies, including the branched GDGT paleothermometer. This serves as a cautionary tale on the danger of attempting to interpret biomarker proxy records without a wider understanding of their environmental context.

KW - Biomarkers

KW - Eocene

KW - GDGTs

KW - Hydrology

KW - Lignite

KW - Peat

UR - http://www.scopus.com/inward/record.url?scp=85069966184&partnerID=8YFLogxK

U2 - 10.1016/j.gloplacha.2019.102991

DO - 10.1016/j.gloplacha.2019.102991

M3 - Article

AN - SCOPUS:85069966184

VL - 181

SP - 1

EP - 8

JO - Global and Planetary Change

JF - Global and Planetary Change

SN - 0921-8181

M1 - 102991

ER -