Mostrar el registro sencillo del ítem
dc.contributor.author
Remirez, Mariano Nicolas
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Algeo, Thomas
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.date.available
2020-12-10T17:41:47Z
dc.date.issued
2020-02
dc.identifier.citation
Remirez, Mariano Nicolas; Algeo, Thomas; Paleosalinity determination in ancient epicontinental seas: A case study of the T-OAE in the Cleveland Basin (UK); Elsevier Science; Earth-science Reviews; 201; 2-2020; 1-15
dc.identifier.issn
0012-8252
dc.identifier.uri
http://hdl.handle.net/11336/120124
dc.description.abstract
The Early Jurassic Toarcian oceanic anoxic event (T-OAE) was marked by deposition of organic-rich sediments and a pronounced negative carbon-isotope excursion across the Northwest European Sea (NWES), representing a signal that was stronger regionally than globally. Various models for the T-OAE have been proposed, some focusing on general atmospheric-oceanic controls to reflect its global character and others emphasizing local or regional factors to account for its strong expression in the NWES. In this study, we evaluate watermass dynamics of the Early Jurassic Cleveland Basin (UK) during the T-OAE using a combination of paleosalinity proxies (B/Ga, Sr/Ba, and S/TOC). These proxies suggest that brackish conditions existed prior to onset of the T-OAE, with a shift to nearly freshwater conditions during the T-OAE, reflecting a large increase in terrestrial runoff due to a stronger hydrological cycle, possibly combined with shallowing of the marginal sill of the Cleveland Basin through sea-level fall. Following the T-OAE, basinal salinity conditions first returned to brackish and then gradually shifted to fully marine. This hydrographic history accounts for low Mo concentrations in T-OAE sediments of the Cleveland Basin, demonstrating control by watermass restriction and local (rather than global) aqueous Mo drawdown. These findings demonstrate the importance of local hydrographic controls on the sedimentary expression of the T-OAE. The more general significance of this study is that it highlights the need for application of paired salinity and redox proxies in order to correctly interpret paleoenvironmental variations in marginal-marine basins.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights
Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ANOXIA
dc.subject
B/GA
dc.subject
BRACKISH
dc.subject
EARLY JURASSIC
dc.subject
S/TOC
dc.subject
SR/BA
dc.subject.classification
Geociencias multidisciplinaria
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.title
Paleosalinity determination in ancient epicontinental seas: A case study of the T-OAE in the Cleveland Basin (UK)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-12-04T18:36:17Z
dc.journal.volume
201
dc.journal.pagination
1-15
dc.journal.pais
Países Bajos
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Remirez, Mariano Nicolas. University of Cincinnati; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
dc.description.fil
Fil: Algeo, Thomas. University of Cincinnati; Estados Unidos. China University of Geosciences; China
dc.journal.title
Earth-science Reviews
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.earscirev.2019.103072
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0012825219305264?via%3Dihub
Archivos asociados