Immediate and delayed biotic and environmental responses to the carbon cycle perturbation at the onset of OAE 1a – Insights from a new high-resolution record from the Western Tethys

The onset of the early Aptian Oceanic Anoxic Event (OAE 1a) was an interval of rapid global environmental change, linked to a major perturbation of the carbon cycle. A complex response of the biotic and environmental system occurred, ultimately triggered by volcanism of the Ontong-Java Plateau. Here...

ver descrição completa

Detalhes bibliográficos
Autores: Sequero López, Cristina, Froehner, Sandro, Castro, José Manuel, Gea, Ginés A. de, Quijano López, María Luisa, Naafs, B. David A., Pancost, Richard D.
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/128657
Acesso em linha:https://hdl.handle.net/20.500.14352/128657
Access Level:acceso abierto
Palavra-chave:551.763
OAE 1a onset
Carbon cycle perturbation
High-resolution study
Biotic response
Environmental changes
OJP-volcanism
Geoquímica
Geología estratigráfica
Paleontología
2502.05 Paleoclimatología
2503.07 Geoquímica Orgánica
2503.08 Isótopos Estables
2506.18 Sedimentología
2506.19 Estratigrafía
id ES_28456f5608c4d96d11b82de4e2d47a57
oai_identifier_str oai:docta.ucm.es:20.500.14352/128657
network_acronym_str ES
network_name_str España
repository_id_str
spelling Immediate and delayed biotic and environmental responses to the carbon cycle perturbation at the onset of OAE 1a – Insights from a new high-resolution record from the Western TethysSequero López, CristinaFroehner, SandroCastro, José ManuelGea, Ginés A. deQuijano López, María LuisaNaafs, B. David A.Pancost, Richard D.551.763OAE 1a onsetCarbon cycle perturbationHigh-resolution studyBiotic responseEnvironmental changesOJP-volcanismGeoquímicaGeología estratigráficaPaleontología2502.05 Paleoclimatología2503.07 Geoquímica Orgánica2503.08 Isótopos Estables2506.18 Sedimentología2506.19 EstratigrafíaThe onset of the early Aptian Oceanic Anoxic Event (OAE 1a) was an interval of rapid global environmental change, linked to a major perturbation of the carbon cycle. A complex response of the biotic and environmental system occurred, ultimately triggered by volcanism of the Ontong-Java Plateau. Here we present a new high-resolution study of the very onset of OAE 1a (ca. 80 kyr), obtained through integration of C-isotope stratigraphy, total organic carbon (TOC) contents, elemental geochemistry and biomarkers, in order to examine the nature and timing of changes in the carbon cycle, biota and the environmental system. This work provides new evidence for an early response of the biotic and environmental system, which predates the more generalized development of oceanic anoxia and widespread increase in primary productivity. The early response took place as soon as few kyrs after the initiation of the carbon cycle perturbation, whereas the major change occurred some 29 kyr later. A probable injection of methane postdates the onset of OAE 1a by 6 kyr, likely triggered by early stages of volcanism and/or sill intrusions into organic-rich sediments. These results provide new insights into the analysis of the onset of OAE 1a, and indicates that future research at higher resolution is required in order to better understand the complex interplay of Earth system processes in response to increases in pCO2.ElSevierUniversidad Complutense de Madrid20252025-11-0720252025-11-07journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/128657reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1286572026-06-02T12:44:21Z
dc.title.none.fl_str_mv Immediate and delayed biotic and environmental responses to the carbon cycle perturbation at the onset of OAE 1a – Insights from a new high-resolution record from the Western Tethys
title Immediate and delayed biotic and environmental responses to the carbon cycle perturbation at the onset of OAE 1a – Insights from a new high-resolution record from the Western Tethys
spellingShingle Immediate and delayed biotic and environmental responses to the carbon cycle perturbation at the onset of OAE 1a – Insights from a new high-resolution record from the Western Tethys
Sequero López, Cristina
551.763
OAE 1a onset
Carbon cycle perturbation
High-resolution study
Biotic response
Environmental changes
OJP-volcanism
Geoquímica
Geología estratigráfica
Paleontología
2502.05 Paleoclimatología
2503.07 Geoquímica Orgánica
2503.08 Isótopos Estables
2506.18 Sedimentología
2506.19 Estratigrafía
title_short Immediate and delayed biotic and environmental responses to the carbon cycle perturbation at the onset of OAE 1a – Insights from a new high-resolution record from the Western Tethys
title_full Immediate and delayed biotic and environmental responses to the carbon cycle perturbation at the onset of OAE 1a – Insights from a new high-resolution record from the Western Tethys
title_fullStr Immediate and delayed biotic and environmental responses to the carbon cycle perturbation at the onset of OAE 1a – Insights from a new high-resolution record from the Western Tethys
title_full_unstemmed Immediate and delayed biotic and environmental responses to the carbon cycle perturbation at the onset of OAE 1a – Insights from a new high-resolution record from the Western Tethys
title_sort Immediate and delayed biotic and environmental responses to the carbon cycle perturbation at the onset of OAE 1a – Insights from a new high-resolution record from the Western Tethys
dc.creator.none.fl_str_mv Sequero López, Cristina
Froehner, Sandro
Castro, José Manuel
Gea, Ginés A. de
Quijano López, María Luisa
Naafs, B. David A.
Pancost, Richard D.
author Sequero López, Cristina
author_facet Sequero López, Cristina
Froehner, Sandro
Castro, José Manuel
Gea, Ginés A. de
Quijano López, María Luisa
Naafs, B. David A.
Pancost, Richard D.
author_role author
author2 Froehner, Sandro
Castro, José Manuel
Gea, Ginés A. de
Quijano López, María Luisa
Naafs, B. David A.
Pancost, Richard D.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 551.763
OAE 1a onset
Carbon cycle perturbation
High-resolution study
Biotic response
Environmental changes
OJP-volcanism
Geoquímica
Geología estratigráfica
Paleontología
2502.05 Paleoclimatología
2503.07 Geoquímica Orgánica
2503.08 Isótopos Estables
2506.18 Sedimentología
2506.19 Estratigrafía
topic 551.763
OAE 1a onset
Carbon cycle perturbation
High-resolution study
Biotic response
Environmental changes
OJP-volcanism
Geoquímica
Geología estratigráfica
Paleontología
2502.05 Paleoclimatología
2503.07 Geoquímica Orgánica
2503.08 Isótopos Estables
2506.18 Sedimentología
2506.19 Estratigrafía
description The onset of the early Aptian Oceanic Anoxic Event (OAE 1a) was an interval of rapid global environmental change, linked to a major perturbation of the carbon cycle. A complex response of the biotic and environmental system occurred, ultimately triggered by volcanism of the Ontong-Java Plateau. Here we present a new high-resolution study of the very onset of OAE 1a (ca. 80 kyr), obtained through integration of C-isotope stratigraphy, total organic carbon (TOC) contents, elemental geochemistry and biomarkers, in order to examine the nature and timing of changes in the carbon cycle, biota and the environmental system. This work provides new evidence for an early response of the biotic and environmental system, which predates the more generalized development of oceanic anoxia and widespread increase in primary productivity. The early response took place as soon as few kyrs after the initiation of the carbon cycle perturbation, whereas the major change occurred some 29 kyr later. A probable injection of methane postdates the onset of OAE 1a by 6 kyr, likely triggered by early stages of volcanism and/or sill intrusions into organic-rich sediments. These results provide new insights into the analysis of the onset of OAE 1a, and indicates that future research at higher resolution is required in order to better understand the complex interplay of Earth system processes in response to increases in pCO2.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-11-07
2025
2025-11-07
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/128657
url https://hdl.handle.net/20.500.14352/128657
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ElSevier
publisher.none.fl_str_mv ElSevier
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869404936023834624
score 15,198674

Registos relacionados