Perturbation of the carbon cycle during the late Pliensbachian - early Toarcian: New insight from high-resolution carbon isotope records in Morocco
Preceding the early Toarcian Oceanic Anoxic Event by similar to 1 Myr, the Pliensbachian-Toarcian boundary event is in many aspects as severe and disturbing for the environment as its better-studied successor. Both events are associated with rapid and pronounced global warming, major faunal and flor...
Published in: | Journal of African Earth Sciences |
---|---|
Main Authors: | , , , , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
|
Subjects: | |
Online Access: | https://univ-lyon1.hal.science/hal-02331117 https://doi.org/10.1016/j.jafrearsci.2015.12.018 |
id |
ftunivlyon1:oai:HAL:hal-02331117v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivlyon1:oai:HAL:hal-02331117v1 2023-05-15T17:12:05+02:00 Perturbation of the carbon cycle during the late Pliensbachian - early Toarcian: New insight from high-resolution carbon isotope records in Morocco Bodin, Stephane Krencker, Francois-Nicolas Kothe, Tim Hoffmann, Rene Mattioli, Emanuela Heimhofer, Ulrich Kabiri, Lahcen Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) 2016 https://univ-lyon1.hal.science/hal-02331117 https://doi.org/10.1016/j.jafrearsci.2015.12.018 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jafrearsci.2015.12.018 hal-02331117 https://univ-lyon1.hal.science/hal-02331117 doi:10.1016/j.jafrearsci.2015.12.018 ISSN: 1464-343X EISSN: 1879-1956 Journal of African Earth Sciences https://univ-lyon1.hal.science/hal-02331117 Journal of African Earth Sciences, 2016, 116, pp.89-104. ⟨10.1016/j.jafrearsci.2015.12.018⟩ Carbonate mud shedding Carbonate platform demise Early jurassic Methane hydrate Organic and carbonate carbon isotopes [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2016 ftunivlyon1 https://doi.org/10.1016/j.jafrearsci.2015.12.018 2023-04-07T12:26:09Z Preceding the early Toarcian Oceanic Anoxic Event by similar to 1 Myr, the Pliensbachian-Toarcian boundary event is in many aspects as severe and disturbing for the environment as its better-studied successor. Both events are associated with rapid and pronounced global warming, major faunal and floral turnover, increased hydrological cycling and dramatic collapses of carbonate production. To better characterize the Pliensbachian-Toarcian boundary event, a high-resolution, paired carbonate and organic matter carbon isotope survey of three sections from the Central High Atlas Basin of Morocco has been undertaken. A pronounced negative shift in the carbonate carbon-isotope record, not paralleled by a similar excursion in the organic carbon, can be linked to the collapse of the neritic carbonate factory in the earliest Toarcian. These results show that, contrary to the Toarcian Oceanic Anoxic Event, a rapid and massive injection of C-13-depleted carbon into the atmosphere is not responsible for the environmental perturbations observed during the Pliensbachian-Toarcian boundary event. However, input of isotopically non depleted carbon such as mantle source CO2 into the atmosphere as a potential cause for the Pliensbachian-Toarcian boundary event cannot be excluded. This would most probably be sourced from an early pulse of the Karoo-Ferrar Large Igneous Province. (C) 2015 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Methane hydrate HAL Lyon 1 (University Claude Bernard Lyon 1) Journal of African Earth Sciences 116 89 104 |
institution |
Open Polar |
collection |
HAL Lyon 1 (University Claude Bernard Lyon 1) |
op_collection_id |
ftunivlyon1 |
language |
English |
topic |
Carbonate mud shedding Carbonate platform demise Early jurassic Methane hydrate Organic and carbonate carbon isotopes [SDU]Sciences of the Universe [physics] |
spellingShingle |
Carbonate mud shedding Carbonate platform demise Early jurassic Methane hydrate Organic and carbonate carbon isotopes [SDU]Sciences of the Universe [physics] Bodin, Stephane Krencker, Francois-Nicolas Kothe, Tim Hoffmann, Rene Mattioli, Emanuela Heimhofer, Ulrich Kabiri, Lahcen Perturbation of the carbon cycle during the late Pliensbachian - early Toarcian: New insight from high-resolution carbon isotope records in Morocco |
topic_facet |
Carbonate mud shedding Carbonate platform demise Early jurassic Methane hydrate Organic and carbonate carbon isotopes [SDU]Sciences of the Universe [physics] |
description |
Preceding the early Toarcian Oceanic Anoxic Event by similar to 1 Myr, the Pliensbachian-Toarcian boundary event is in many aspects as severe and disturbing for the environment as its better-studied successor. Both events are associated with rapid and pronounced global warming, major faunal and floral turnover, increased hydrological cycling and dramatic collapses of carbonate production. To better characterize the Pliensbachian-Toarcian boundary event, a high-resolution, paired carbonate and organic matter carbon isotope survey of three sections from the Central High Atlas Basin of Morocco has been undertaken. A pronounced negative shift in the carbonate carbon-isotope record, not paralleled by a similar excursion in the organic carbon, can be linked to the collapse of the neritic carbonate factory in the earliest Toarcian. These results show that, contrary to the Toarcian Oceanic Anoxic Event, a rapid and massive injection of C-13-depleted carbon into the atmosphere is not responsible for the environmental perturbations observed during the Pliensbachian-Toarcian boundary event. However, input of isotopically non depleted carbon such as mantle source CO2 into the atmosphere as a potential cause for the Pliensbachian-Toarcian boundary event cannot be excluded. This would most probably be sourced from an early pulse of the Karoo-Ferrar Large Igneous Province. (C) 2015 Elsevier Ltd. All rights reserved. |
author2 |
Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Bodin, Stephane Krencker, Francois-Nicolas Kothe, Tim Hoffmann, Rene Mattioli, Emanuela Heimhofer, Ulrich Kabiri, Lahcen |
author_facet |
Bodin, Stephane Krencker, Francois-Nicolas Kothe, Tim Hoffmann, Rene Mattioli, Emanuela Heimhofer, Ulrich Kabiri, Lahcen |
author_sort |
Bodin, Stephane |
title |
Perturbation of the carbon cycle during the late Pliensbachian - early Toarcian: New insight from high-resolution carbon isotope records in Morocco |
title_short |
Perturbation of the carbon cycle during the late Pliensbachian - early Toarcian: New insight from high-resolution carbon isotope records in Morocco |
title_full |
Perturbation of the carbon cycle during the late Pliensbachian - early Toarcian: New insight from high-resolution carbon isotope records in Morocco |
title_fullStr |
Perturbation of the carbon cycle during the late Pliensbachian - early Toarcian: New insight from high-resolution carbon isotope records in Morocco |
title_full_unstemmed |
Perturbation of the carbon cycle during the late Pliensbachian - early Toarcian: New insight from high-resolution carbon isotope records in Morocco |
title_sort |
perturbation of the carbon cycle during the late pliensbachian - early toarcian: new insight from high-resolution carbon isotope records in morocco |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://univ-lyon1.hal.science/hal-02331117 https://doi.org/10.1016/j.jafrearsci.2015.12.018 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
ISSN: 1464-343X EISSN: 1879-1956 Journal of African Earth Sciences https://univ-lyon1.hal.science/hal-02331117 Journal of African Earth Sciences, 2016, 116, pp.89-104. ⟨10.1016/j.jafrearsci.2015.12.018⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jafrearsci.2015.12.018 hal-02331117 https://univ-lyon1.hal.science/hal-02331117 doi:10.1016/j.jafrearsci.2015.12.018 |
op_doi |
https://doi.org/10.1016/j.jafrearsci.2015.12.018 |
container_title |
Journal of African Earth Sciences |
container_volume |
116 |
container_start_page |
89 |
op_container_end_page |
104 |
_version_ |
1766068855802691584 |