Terrestrial environmental change across the onset of the PETM and the associated impact on biomarker proxies: A cautionary tale
Terrestrial environmental change across the onset of the PETM and the associated impact on biomarker proxies: A cautionary tale
复制标题
PETM 爆发期间的陆地环境变化及其对生物标志物代理的相关影响:一个警示故事
DOI:
10.1016/j.gloplacha.2019.102991
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发表时间:
2019
影响因子:
3.9
通讯作者:
Inglis G
中科院分区:
文献类型:
--
作者:
Inglis G
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.
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DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
M. Collinson;J. Hooker;D. R. Groecke
通讯作者:
D. R. Groecke
影响因子:
5.3
作者:
C. Roberts;A. Legrande;A. Tripati
通讯作者:
C. Roberts;A. Legrande;A. Tripati
影响因子:
64.8
作者:
Ross Secord;P. Gingerich;K. C. Lohmann;K. MacLeod
通讯作者:
K. MacLeod
DOI:
--
发表时间:
2013
期刊:
INTERNATIONAL JOURNAL PLANT SCIENCES
影响因子:
--
作者:
M. Collinson;Selena Y. Smith;Johanna H. A. van Konijnenburg;D. Batten;J. van der Burgh;J. Barke;F. Marone
通讯作者:
F. Marone
影响因子:
5.3
作者:
Inglis, Gordon N.;Collinson, Margaret E.;Pancost, Richard D.
通讯作者:
Pancost, Richard D.