Ghent University Academic Bibliography

Advanced

A Cenozoic-style scenario for the end-Ordovician glaciation

Jean-François Ghienne, André Desrochers, Thijs Vandenbroucke UGent, Aicha Achab, Ester Asselin, Marie-Pierre Dabard, Claude Farley, Alfredo Loi, Florentin Paris, Steven Wickson, et al. (2014) NATURE COMMUNICATIONS. 5.
abstract
The end-Ordovician was an enigmatic interval in the Phanerozoic, known for massive glaciation potentially at elevated CO2 levels, biogeochemical cycle disruptions recorded as large isotope anomalies and a devastating extinction event. Ice-sheet volumes claimed to be twice those of the Last Glacial Maximum paradoxically coincided with oceans as warm as today. Here we argue that some of these remarkable claims arise from undersampling of incomplete geological sections that led to apparent temporal correlations within the relatively coarse resolution capability of Palaeozoic biochronostratigraphy. We examine exceptionally complete sedimentary records from two, low and high, palaeolatitude settings. Their correlation framework reveals a Cenozoic-style scenario including three main glacial cycles and higher-order phenomena. This necessitates revision of mechanisms for the end-Ordovician events, as the first extinction is tied to an early phase of melting, not to initial cooling, and the largest delta C-13 excursion occurs during final deglaciation, not at the glacial apex.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
EARLY SILURIAN GLACIATION, SEA-LEVEL CHANGE, MASS EXTINCTION, ANTI-ATLAS, ENVIRONMENTAL-CHANGES, ISOTOPIC EVIDENCE, ANTICOSTI ISLAND, HIGH-RESOLUTION, CLIMATE-CHANGE, MOROCCO
journal title
NATURE COMMUNICATIONS
Nat. Commun.
volume
5
article number
4485
pages
9 pages
Web of Science type
Article
Web of Science id
000342774000001
JCR category
MULTIDISCIPLINARY SCIENCES
JCR impact factor
11.47 (2014)
JCR rank
3/57 (2014)
JCR quartile
1 (2014)
ISSN
2041-1723
DOI
10.1038/ncomms5485
language
English
UGent publication?
no
classification
A1
copyright statement
Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
id
6848045
handle
http://hdl.handle.net/1854/LU-6848045
date created
2015-06-24 22:08:56
date last changed
2017-05-04 14:09:44
@article{6848045,
  abstract     = {The end-Ordovician was an enigmatic interval in the Phanerozoic, known for massive glaciation potentially at elevated CO2 levels, biogeochemical cycle disruptions recorded as large isotope anomalies and a devastating extinction event. Ice-sheet volumes claimed to be twice those of the Last Glacial Maximum paradoxically coincided with oceans as warm as today. Here we argue that some of these remarkable claims arise from undersampling of incomplete geological sections that led to apparent temporal correlations within the relatively coarse resolution capability of Palaeozoic biochronostratigraphy. We examine exceptionally complete sedimentary records from two, low and high, palaeolatitude settings. Their correlation framework reveals a Cenozoic-style scenario including three main glacial cycles and higher-order phenomena. This necessitates revision of mechanisms for the end-Ordovician events, as the first extinction is tied to an early phase of melting, not to initial cooling, and the largest delta C-13 excursion occurs during final deglaciation, not at the glacial apex.},
  articleno    = {4485},
  author       = {Ghienne, Jean-Fran\c{c}ois and Desrochers, Andr{\'e} and Vandenbroucke, Thijs and Achab, Aicha and Asselin, Ester and Dabard, Marie-Pierre and Farley, Claude and Loi, Alfredo and Paris, Florentin and Wickson, Steven and Veizer, Jan},
  issn         = {2041-1723},
  journal      = {NATURE COMMUNICATIONS},
  keyword      = {EARLY SILURIAN GLACIATION,SEA-LEVEL CHANGE,MASS EXTINCTION,ANTI-ATLAS,ENVIRONMENTAL-CHANGES,ISOTOPIC EVIDENCE,ANTICOSTI ISLAND,HIGH-RESOLUTION,CLIMATE-CHANGE,MOROCCO},
  language     = {eng},
  pages        = {9},
  title        = {A Cenozoic-style scenario for the end-Ordovician glaciation},
  url          = {http://dx.doi.org/10.1038/ncomms5485},
  volume       = {5},
  year         = {2014},
}

Chicago
Ghienne, Jean-François, André Desrochers, Thijs Vandenbroucke, Aicha Achab, Ester Asselin, Marie-Pierre Dabard, Claude Farley, et al. 2014. “A Cenozoic-style Scenario for the end-Ordovician Glaciation.” Nature Communications 5.
APA
Ghienne, J.-F., Desrochers, A., Vandenbroucke, T., Achab, A., Asselin, E., Dabard, M.-P., Farley, C., et al. (2014). A Cenozoic-style scenario for the end-Ordovician glaciation. NATURE COMMUNICATIONS, 5.
Vancouver
1.
Ghienne J-F, Desrochers A, Vandenbroucke T, Achab A, Asselin E, Dabard M-P, et al. A Cenozoic-style scenario for the end-Ordovician glaciation. NATURE COMMUNICATIONS. 2014;5.
MLA
Ghienne, Jean-François, André Desrochers, Thijs Vandenbroucke, et al. “A Cenozoic-style Scenario for the end-Ordovician Glaciation.” NATURE COMMUNICATIONS 5 (2014): n. pag. Print.