Preprints
https://doi.org/10.5194/sed-4-1205-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/sed-4-1205-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
19 Sep 2012
Status: this preprint was under review for the journal SE but the revision was not accepted.
Ammonoid multi-extinction crises during the Late Pliensbachian – Toarcian and carbon cycle instabilities
Abstract. Five crises affecting ammonite evolution occurred during the Late Pliensbachian to Late Toarcian stages (Early Jurassic). The first two (Gibbosus and end-Spinatum zones) occurred during highly cold and regressive conditions which were followed by a global anoxic event generated during a supergreenhouse warm event (Levisoni subzone) concomitant with a worldwide transgressive event. The last two (Late Variabilis and Late Insigne zones) are related to regressive events. We present new carbon isotope data from Southern Peru that demonstrate that most of the major Toarcian crises affecting ammonite evolution can be correlated with the variations affecting the δ13C during that unstable period. The morphogenetic reactions of the ammonites during the five different upper Liassic critical episodes are analysed, showing how this group can be used as stress indicators.
How to cite. Guex, J., Bartolini, A., Spangenberg, J., Vicente, J.-C., and Schaltegger, U.: Ammonoid multi-extinction crises during the Late Pliensbachian – Toarcian and carbon cycle instabilities, Solid Earth Discuss., 4, 1205–1228, https://doi.org/10.5194/sed-4-1205-2012, 2012.
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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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RC C585: 'Toarcian ammonoid extinction', Anonymous Referee #1, 24 Oct 2012
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AC C697: 'REPLY TO REVIEWER 1', Jean Guex, 29 Nov 2012
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AC C697: 'REPLY TO REVIEWER 1', Jean Guex, 29 Nov 2012
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RC C588: 'Review of Ammonoid multi-extinction crises', Anonymous Referee #2, 25 Oct 2012
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AC C699: 'REPLY TO REVIEWER 2', Jean Guex, 29 Nov 2012
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AC C699: 'REPLY TO REVIEWER 2', Jean Guex, 29 Nov 2012
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
- Printer-friendly version
- Supplement
-
RC C585: 'Toarcian ammonoid extinction', Anonymous Referee #1, 24 Oct 2012
-
AC C697: 'REPLY TO REVIEWER 1', Jean Guex, 29 Nov 2012
-
AC C697: 'REPLY TO REVIEWER 1', Jean Guex, 29 Nov 2012
-
RC C588: 'Review of Ammonoid multi-extinction crises', Anonymous Referee #2, 25 Oct 2012
-
AC C699: 'REPLY TO REVIEWER 2', Jean Guex, 29 Nov 2012
-
AC C699: 'REPLY TO REVIEWER 2', Jean Guex, 29 Nov 2012
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Cited
8 citations as recorded by crossref.
- Eruptive history of the Karoo lava flows and their impact on early Jurassic environmental change M. Moulin et al. 10.1002/2016JB013354
- Evaluating the temporal link between the Karoo LIP and climatic–biologic events of the Toarcian Stage with high-precision U–Pb geochronology B. Sell et al. 10.1016/j.epsl.2014.10.008
- Population response during an Oceanic Anoxic Event: The case of Posidonotis (Bivalvia) from the Lower Jurassic of the Neuquén Basin, Argentina S. Ros-Franch et al. 10.1016/j.palaeo.2019.04.009
- The middle Toarcian cold snap: Trigger of mass extinction and carbonate factory demise F. Krencker et al. 10.1016/j.gloplacha.2014.03.008
- Record ofJuraphyllitesex gr.libertus(Gemmellaro 1884) from the Ururoan Stage (Early Jurassic, New Zealand) and observations on the paleoenvironmental dynamics of the Ururoan ammonite fauna G. Stevens 10.1080/00288306.2014.958503
- High-precision U–Pb geochronology and a new chronostratigraphy for the Cañadón Asfalto Basin, Chubut, central Patagonia: Implications for terrestrial faunal and floral evolution in Jurassic R. Cúneo et al. 10.1016/j.gr.2013.01.010
- Astronomical constraints on the duration of the Early Jurassic Pliensbachian Stage and global climatic fluctuations M. Ruhl et al. 10.1016/j.epsl.2016.08.038
- Climate and environmental response to the break-up of Pangea during the Early Jurassic (Hettangian-Pliensbachian); the Dorset coast (UK) revisited I. Schöllhorn et al. 10.1016/j.gloplacha.2019.103096
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J. Guex
Institute of Geology, Anthropole, University of Lausanne, Switzerland
A. Bartolini
Museum d'Histoire Naturelle, Paris, France
J. Spangenberg
Institute of Geochemistry, Anthropole,University of Lausanne, Switzerland
J.-C. Vicente
Dept. of Geology, Université Pierre et Marie Curie, Paris, France
U. Schaltegger
Earth and Environmental Sciences, University of Geneva, Rue des Maraîchers 13, 1205, Geneva, Switzerland