Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain)

Bulk carbon and oxygen stable isotopes of ancient shallow-marine carbonates can record the effects of multiple palaeoenvironmental factors, but also the imprint of several post-depositional processes, which may alter the original marine isotopic composition. In this study, carbon and oxygen stable i...

ver descrição completa

Detalhes bibliográficos
Autores: Sequero, Cristina|||0000-0003-2449-5303, Della Porta, Giovanna|||0000-0003-3479-0592, Bádenas, Beatriz, Aurell, Marcos|||0000-0002-2430-7424
Tipo de documento: artigo
Data de publicação:2021
País:España
Recursos:Universitat Autònoma de Barcelona
Repositório:Dipòsit Digital de Documents de la UAB
Idioma:catalão
OAI Identifier:oai:ddd.uab.cat:250173
Acesso em linha:https://ddd.uab.cat/record/250173
https://dx.doi.org/urn:doi:10.1344/GeologicaActa2021.19.14
Access Level:Acceso aberto
Palavra-chave:Carbonate ramp facies
Carbon and oxygen isotopes
Diagenetic resetting
Post-depositional history
Tectonic uplift
id ES_3d49f26ac766d417b2dd0eaa9224e7d4
oai_identifier_str oai:ddd.uab.cat:250173
network_acronym_str ES
network_name_str España
repository_id_str
spelling Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain)the imprint of different burial and tectonic historiesSequero, Cristina|||0000-0003-2449-5303Della Porta, Giovanna|||0000-0003-3479-0592Bádenas, BeatrizAurell, Marcos|||0000-0002-2430-7424Carbonate ramp faciesCarbon and oxygen isotopesDiagenetic resettingPost-depositional historyTectonic upliftBulk carbon and oxygen stable isotopes of ancient shallow-marine carbonates can record the effects of multiple palaeoenvironmental factors, but also the imprint of several post-depositional processes, which may alter the original marine isotopic composition. In this study, carbon and oxygen stable isotope analyses were performed on bulk carbonate, bivalve calcitic-shell (Trichites) and calcite vein samples from two stratigraphic sections (Tosos and Fuendetodos, present-day distance 15km), representing proximal inner- and distal mid-ramp environments, respectively, of the uppermost Kimmeridgian ramp facies deposited in the northern Iberian Basin (NE Spain). These successions underwent different diagenetic pathways that altered the primary marine isotopic composition in each section in different ways. Different burial histories, tectonic uplift and a variable exposure to meteoric diagenesis from the end of the Kimmeridgian to the Cenozoic (following Alpine tectonic uplift) are reflected in the different alteration patterns of the carbon and oxygen stable isotope signatures. A significant deviation to lower values in both δ13O and δ18O is recorded in those carbonates mostly exposed to meteoric diagenesis (distal mid-ramp Fuendetodos section), because of post-depositional tectonic uplift (telogenesis). On the other hand, the deposits mainly affected by burial diagenesis (proximal inner-ramp Tosos section) only record low δ18O with respect to expected values for pristine Kimmeridgian marine carbonates. The different burial and tectonic uplift histories of these deposits in each sector, due to their different tectonic evolution in this part of the basin, resulted in a variable degree of diagenetic resetting. However, in spite of the different diagenetic resetting reported of the carbon and oxygen stable isotope signatures in each section, these carbonates show similar cement types in terms of fabrics and cathodoluminescence properties. The diagenetic resetting reported for these carbonates prevents the use of the δ13O and δ18O records for addressing palaeoenvironmental interpretations, but instead highlights useful features regarding the variable diagenetic overprint of the studied shallow-marine carbonate successions concerning their specific post-depositional history. 22021-01-0120212021-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/250173https://dx.doi.org/urn:doi:10.1344/GeologicaActa2021.19.14reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaCataláncatopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.https://creativecommons.org/licenses/by-sa/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2501732026-06-06T12:50:31Z
dc.title.none.fl_str_mv Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain)
the imprint of different burial and tectonic histories
title Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain)
spellingShingle Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain)
Sequero, Cristina|||0000-0003-2449-5303
Carbonate ramp facies
Carbon and oxygen isotopes
Diagenetic resetting
Post-depositional history
Tectonic uplift
title_short Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain)
title_full Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain)
title_fullStr Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain)
title_full_unstemmed Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain)
title_sort Carbon and oxygen stable isotope record of upper Kimmeridgian shallow-marine ramp carbonates (Iberian Basin, NE Spain)
dc.creator.none.fl_str_mv Sequero, Cristina|||0000-0003-2449-5303
Della Porta, Giovanna|||0000-0003-3479-0592
Bádenas, Beatriz
Aurell, Marcos|||0000-0002-2430-7424
author Sequero, Cristina|||0000-0003-2449-5303
author_facet Sequero, Cristina|||0000-0003-2449-5303
Della Porta, Giovanna|||0000-0003-3479-0592
Bádenas, Beatriz
Aurell, Marcos|||0000-0002-2430-7424
author_role author
author2 Della Porta, Giovanna|||0000-0003-3479-0592
Bádenas, Beatriz
Aurell, Marcos|||0000-0002-2430-7424
author2_role author
author
author
dc.subject.none.fl_str_mv Carbonate ramp facies
Carbon and oxygen isotopes
Diagenetic resetting
Post-depositional history
Tectonic uplift
topic Carbonate ramp facies
Carbon and oxygen isotopes
Diagenetic resetting
Post-depositional history
Tectonic uplift
description Bulk carbon and oxygen stable isotopes of ancient shallow-marine carbonates can record the effects of multiple palaeoenvironmental factors, but also the imprint of several post-depositional processes, which may alter the original marine isotopic composition. In this study, carbon and oxygen stable isotope analyses were performed on bulk carbonate, bivalve calcitic-shell (Trichites) and calcite vein samples from two stratigraphic sections (Tosos and Fuendetodos, present-day distance 15km), representing proximal inner- and distal mid-ramp environments, respectively, of the uppermost Kimmeridgian ramp facies deposited in the northern Iberian Basin (NE Spain). These successions underwent different diagenetic pathways that altered the primary marine isotopic composition in each section in different ways. Different burial histories, tectonic uplift and a variable exposure to meteoric diagenesis from the end of the Kimmeridgian to the Cenozoic (following Alpine tectonic uplift) are reflected in the different alteration patterns of the carbon and oxygen stable isotope signatures. A significant deviation to lower values in both δ13O and δ18O is recorded in those carbonates mostly exposed to meteoric diagenesis (distal mid-ramp Fuendetodos section), because of post-depositional tectonic uplift (telogenesis). On the other hand, the deposits mainly affected by burial diagenesis (proximal inner-ramp Tosos section) only record low δ18O with respect to expected values for pristine Kimmeridgian marine carbonates. The different burial and tectonic uplift histories of these deposits in each sector, due to their different tectonic evolution in this part of the basin, resulted in a variable degree of diagenetic resetting. However, in spite of the different diagenetic resetting reported of the carbon and oxygen stable isotope signatures in each section, these carbonates show similar cement types in terms of fabrics and cathodoluminescence properties. The diagenetic resetting reported for these carbonates prevents the use of the δ13O and δ18O records for addressing palaeoenvironmental interpretations, but instead highlights useful features regarding the variable diagenetic overprint of the studied shallow-marine carbonate successions concerning their specific post-depositional history.
publishDate 2021
dc.date.none.fl_str_mv 2
2021-01-01
2021
2021-01-01
dc.type.none.fl_str_mv 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://ddd.uab.cat/record/250173
https://dx.doi.org/urn:doi:10.1344/GeologicaActa2021.19.14
url https://ddd.uab.cat/record/250173
https://dx.doi.org/urn:doi:10.1344/GeologicaActa2021.19.14
dc.language.none.fl_str_mv Catalán
cat
language_invalid_str_mv Catalán
language cat
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-sa/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
https://creativecommons.org/licenses/by-sa/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869406430436524032
score 15,301629

Registros relacionados