Cool early Albian climates; new data from Argentina

Previous studies on the stable isotope geochemistry of dimitobelid belemnites from Antarctica and Australia indicated cool climatic conditions during the early Albian in the shelf seas around the Gondwanan margin. In this paper new analyses from diagenetically unaltered specimens of Dimitobelus cf....

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Bibliographic Details
Main Authors: Pirrie, D., Marshall, J. D., Doyle, P., Riccardi, Alberto Carlos
Format: Article in Journal/Newspaper
Language:English
Published: 2004
Subjects:
Ciencias Naturales
Argentina
Antarc*
Antarctica
Online Access:http://sedici.unlp.edu.ar/handle/10915/99795
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record_format openpolar
spelling ftunivlaplata:oai:sedici.unlp.edu.ar:10915/99795 2023-05-15T13:47:46+02:00 Cool early Albian climates; new data from Argentina Pirrie, D. Marshall, J. D. Doyle, P. Riccardi, Alberto Carlos 2004 application/pdf 27-33 http://sedici.unlp.edu.ar/handle/10915/99795 en eng Creataceous Research vol. 25, no. 1 http://sedici.unlp.edu.ar/handle/10915/99795 issn:0195-6671 http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) CC-BY-NC-SA Ciencias Naturales Articulo 2004 ftunivlaplata 2020-09-13T00:01:38Z Previous studies on the stable isotope geochemistry of dimitobelid belemnites from Antarctica and Australia indicated cool climatic conditions during the early Albian in the shelf seas around the Gondwanan margin. In this paper new analyses from diagenetically unaltered specimens of Dimitobelus cf. stimulus from early Albian deposits of the Rio Mayer Formation of Lago San Martin, southern Argentina are presented. Oxygen isotope values for diagenetically least altered samples give values ranging between d18O C0.07 and C0.96 vPDB, which equate to a mean palaeotemperature of 9.5 (C (assuming dw of 1.2& SMOW). These data are consistent with a model of cool early Albian shelf seas in the Southern Hemisphere. Facultad de Ciencias Naturales y Museo Article in Journal/Newspaper Antarc* Antarctica Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) Argentina
institution Open Polar
collection Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
op_collection_id ftunivlaplata
language English
topic Ciencias Naturales
spellingShingle Ciencias Naturales
Pirrie, D.
Marshall, J. D.
Doyle, P.
Riccardi, Alberto Carlos
Cool early Albian climates; new data from Argentina
topic_facet Ciencias Naturales
description Previous studies on the stable isotope geochemistry of dimitobelid belemnites from Antarctica and Australia indicated cool climatic conditions during the early Albian in the shelf seas around the Gondwanan margin. In this paper new analyses from diagenetically unaltered specimens of Dimitobelus cf. stimulus from early Albian deposits of the Rio Mayer Formation of Lago San Martin, southern Argentina are presented. Oxygen isotope values for diagenetically least altered samples give values ranging between d18O C0.07 and C0.96 vPDB, which equate to a mean palaeotemperature of 9.5 (C (assuming dw of 1.2& SMOW). These data are consistent with a model of cool early Albian shelf seas in the Southern Hemisphere. Facultad de Ciencias Naturales y Museo
format Article in Journal/Newspaper
author Pirrie, D.
Marshall, J. D.
Doyle, P.
Riccardi, Alberto Carlos
author_facet Pirrie, D.
Marshall, J. D.
Doyle, P.
Riccardi, Alberto Carlos
author_sort Pirrie, D.
title Cool early Albian climates; new data from Argentina
title_short Cool early Albian climates; new data from Argentina
title_full Cool early Albian climates; new data from Argentina
title_fullStr Cool early Albian climates; new data from Argentina
title_full_unstemmed Cool early Albian climates; new data from Argentina
title_sort cool early albian climates; new data from argentina
publishDate 2004
url http://sedici.unlp.edu.ar/handle/10915/99795
geographic Argentina
geographic_facet Argentina
genre Antarc*
Antarctica
genre_facet Antarc*
Antarctica
op_relation Creataceous Research
vol. 25, no. 1
http://sedici.unlp.edu.ar/handle/10915/99795
issn:0195-6671
op_rights http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
op_rightsnorm CC-BY-NC-SA
_version_ 1766247821653049344

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