First record of the Valanginian positive carbon isotope anomaly in the Mendoza shelf, Neuquén Basin, Argentina: palaeoclimatic implications

The Tithonian-Valanginian time interval in the Mendoza Shelf (Neuquén Basin, Argentina) is well exposed in the Río Salado, Puesto Loncoche and Cuesta del Chihuido sedimentary sections. From those localities, more than fifty preserved oyster shells of the genus Aetostreon sp. were selected and sample...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Gómez Dacal, Alejandro Rubén, Gómez Peral, Lucía Elena, Spalletti, Luis Antonio, Sial, Alcides N., Siccardi, Arón, Poiré, Daniel Gustavo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Geología
Formación Chachao
Ostras
δ13C
Anomalía valanginiana
Clima cretácico
Chachao Formation
Oyster shells
Valanginian anomaly
Cretaceous climate
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/97439
https://ri.conicet.gov.ar/11336/64562
http://www.andeangeology.cl/index.php/revista1/article/view/V45n2-3059
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-97439
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geología
Formación Chachao
Ostras
δ13C
Anomalía valanginiana
Clima cretácico
Chachao Formation
Oyster shells
Valanginian anomaly
Cretaceous climate
spellingShingle Geología
Formación Chachao
Ostras
δ13C
Anomalía valanginiana
Clima cretácico
Chachao Formation
Oyster shells
Valanginian anomaly
Cretaceous climate
Gómez Dacal, Alejandro Rubén
Gómez Peral, Lucía Elena
Spalletti, Luis Antonio
Sial, Alcides N.
Siccardi, Arón
Poiré, Daniel Gustavo
First record of the Valanginian positive carbon isotope anomaly in the Mendoza shelf, Neuquén Basin, Argentina: palaeoclimatic implications
topic_facet Geología
Formación Chachao
Ostras
δ13C
Anomalía valanginiana
Clima cretácico
Chachao Formation
Oyster shells
Valanginian anomaly
Cretaceous climate
description The Tithonian-Valanginian time interval in the Mendoza Shelf (Neuquén Basin, Argentina) is well exposed in the Río Salado, Puesto Loncoche and Cuesta del Chihuido sedimentary sections. From those localities, more than fifty preserved oyster shells of the genus Aetostreon sp. were selected and sampled in order to perform the first δ13C curves for this particular time interval. Mineralogical and cathodoluminiscence properties, inner micromorphology of the valves, added to major and trace element geochemistry were analyzed in order to highlight the best C-O isotopic preservation. The δ13C isotope curves show values varying between 0 and-3‰ VPDB for the Tithonian-Berriasian basal section, and a positive excursion of ~2.4-2.7‰ VPDB in the Valanginian upper section. This δ13C up section trend is here considered in order to reveal eminent correlations with other sections from the Neuquén Basin, as well as the Weissert Event from the Tethys area, also on the basis of their ammonite faunal zones. The palaeotemperatures obtained from δ18O preserved values, added to a detailed sedimentological study suggest that observed δ13C anomaly may responds to a global climatic change from warm and dry to warm and humid conditions.
format Articulo
Articulo
author Gómez Dacal, Alejandro Rubén
Gómez Peral, Lucía Elena
Spalletti, Luis Antonio
Sial, Alcides N.
Siccardi, Arón
Poiré, Daniel Gustavo
author_facet Gómez Dacal, Alejandro Rubén
Gómez Peral, Lucía Elena
Spalletti, Luis Antonio
Sial, Alcides N.
Siccardi, Arón
Poiré, Daniel Gustavo
author_sort Gómez Dacal, Alejandro Rubén
title First record of the Valanginian positive carbon isotope anomaly in the Mendoza shelf, Neuquén Basin, Argentina: palaeoclimatic implications
title_short First record of the Valanginian positive carbon isotope anomaly in the Mendoza shelf, Neuquén Basin, Argentina: palaeoclimatic implications
title_full First record of the Valanginian positive carbon isotope anomaly in the Mendoza shelf, Neuquén Basin, Argentina: palaeoclimatic implications
title_fullStr First record of the Valanginian positive carbon isotope anomaly in the Mendoza shelf, Neuquén Basin, Argentina: palaeoclimatic implications
title_full_unstemmed First record of the Valanginian positive carbon isotope anomaly in the Mendoza shelf, Neuquén Basin, Argentina: palaeoclimatic implications
title_sort first record of the valanginian positive carbon isotope anomaly in the mendoza shelf, neuquén basin, argentina: palaeoclimatic implications
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/97439
https://ri.conicet.gov.ar/11336/64562
http://www.andeangeology.cl/index.php/revista1/article/view/V45n2-3059
work_keys_str_mv AT gomezdacalalejandroruben firstrecordofthevalanginianpositivecarbonisotopeanomalyinthemendozashelfneuquenbasinargentinapalaeoclimaticimplications
AT gomezperalluciaelena firstrecordofthevalanginianpositivecarbonisotopeanomalyinthemendozashelfneuquenbasinargentinapalaeoclimaticimplications
AT spallettiluisantonio firstrecordofthevalanginianpositivecarbonisotopeanomalyinthemendozashelfneuquenbasinargentinapalaeoclimaticimplications
AT sialalcidesn firstrecordofthevalanginianpositivecarbonisotopeanomalyinthemendozashelfneuquenbasinargentinapalaeoclimaticimplications
AT siccardiaron firstrecordofthevalanginianpositivecarbonisotopeanomalyinthemendozashelfneuquenbasinargentinapalaeoclimaticimplications
AT poiredanielgustavo firstrecordofthevalanginianpositivecarbonisotopeanomalyinthemendozashelfneuquenbasinargentinapalaeoclimaticimplications
AT gomezdacalalejandroruben primerregistrodelaanomaliaisotopicapositivadecarbonodelvalanginanoenlaplataformamendocinacuencaneuquinaargentinaimplicacionespaleoclimaticas
AT gomezperalluciaelena primerregistrodelaanomaliaisotopicapositivadecarbonodelvalanginanoenlaplataformamendocinacuencaneuquinaargentinaimplicacionespaleoclimaticas
AT spallettiluisantonio primerregistrodelaanomaliaisotopicapositivadecarbonodelvalanginanoenlaplataformamendocinacuencaneuquinaargentinaimplicacionespaleoclimaticas
AT sialalcidesn primerregistrodelaanomaliaisotopicapositivadecarbonodelvalanginanoenlaplataformamendocinacuencaneuquinaargentinaimplicacionespaleoclimaticas
AT siccardiaron primerregistrodelaanomaliaisotopicapositivadecarbonodelvalanginanoenlaplataformamendocinacuencaneuquinaargentinaimplicacionespaleoclimaticas
AT poiredanielgustavo primerregistrodelaanomaliaisotopicapositivadecarbonodelvalanginanoenlaplataformamendocinacuencaneuquinaargentinaimplicacionespaleoclimaticas
bdutipo_str Repositorios
_version_ 1764820492757237761

Ejemplares similares