Early Paleogene climate at mid latitude in South America: mineralogical and paleobotanical proxies from continental sequences in Golfo San Jorge basin (Patagonia, Argentina)
Raigemborn, María Sol (CONICET. Centro de Investigaciones Geológicas (Argentina))
Brea, Mariana (CICYTTP-CONICET. Laboratorio de Paleobotánica, Centro de Investigaciones Científicas)
Zucol, Alejandro (CICYTTP-CONICET. Laboratorio de Paleobotánica, Centro de Investigaciones Científicas)
Matheos, Sergio Daniel (CONICET. Centro de Investigaciones Geológicas (Argentina))

Date:	2009
Abstract:	The Paleocene-Eocene boundary was a period of transient and intense global warming that had a deep effect on middle and high latitude plant groups. Nevertheless, only scarce early Paleogene paleoclimatic records are known from the South American continental sequences deposited at these latitudes. In this contribution clay mineralogy and paleobotanical analyses (fossil woods and phytoliths) were used as paleoclimate proxies from the lower and middle parts of the Río Chico Group (Golfo San Jorge basin, Patagonia, Argentina). These new data may enable to understand the changing climatic conditions during part of the Paleocene-Eocene transition. In this setting, three clay mineral assemblages were identified: S1 assemblage (smectite) dominates the Peñas Coloradas Formation; S2 assemblage (smectite.
Rights:	Aquest 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.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Paleocene-Eocene ; Clay Minerals ; Fossil Woods ; Phytoliths ; Paleoclimatic proxies
Published in:	Geologica acta, Vol. 7, Num. 1-2 (Març-Juny 2009) , p. 125-145, ISSN 1696-5728

Adreça alternativa: https://raco.cat/index.php/GeologicaActa/article/view/125115
Adreça alternativa: https://revistes.ub.edu/index.php/GEOACTA/article/view/105.000000269
Adreça alternativa: https://revistes.ub.edu/index.php/GEOACTA/article/view/2050
DOI: 10.1344/105.000000269

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