On the persistence of Tropical Paleofloras in central Chile during the Early Eocene

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dc.contributor.authorGayó, E
dc.contributor.authorHinojosa, LF
dc.contributor.authorVillagrán, C
dc.date.accessioned2025-01-21T01:06:39Z
dc.date.available2025-01-21T01:06:39Z
dc.date.issued2005
dc.description.abstractMixed paleofloras first appeared during the Early Eocene of southern South America. These floras were a blend of cold and warm taxa with Austral-Antarctic and Neotropical affinities. Despite the onset of mixed floras, Neotropical floras persisted in central Chile during the Early Eocene. In this study, we analyze the reasons for this persistence and also show that a relationship exists between this persistence and regional paleoclimate. We established the taxonomical composition, associated paleoclimate and phytogeographic affinities of an Early Eocene flora at Caleta Cocholgue, coastal central Chile. Our results indicate that tropical and subtropical taxa prevailed at Caleta Cocholgue. These were chiefly Lauraceae, today associated with a humid-warm climate. Physiognomic analyses indicate Mean Annual Temperature and Mean Annual Precipitation above 19 degrees C and 260 cm, respectively. Moreover, a phytogeographic analysis demonstrates that the Caleta Cocholg-be is closely related to other tropical floras, and poorly linked to contemporary mixed floras. These results strongly suggest that tropical floras persisted in central Chile during the Early Eocene and formed a belt across current subtropical latitudes from southern South America, between 25 degrees S and 37 degrees S. This persistence might be related to the Early Eocene Climatic Optimum and to a shrinking tropical belt, compared to its former Paleocene/Eocene extension. (c) 2005 Elsevier B.V. All rights reserved.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.revpalbo.2005.09.001
dc.identifier.eissn1879-0615
dc.identifier.issn0034-6667
dc.identifier.urihttps://doi.org/10.1016/j.revpalbo.2005.09.001
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96199
dc.identifier.wosidWOS:000233854200004
dc.issue.numero1-2
dc.language.isoen
dc.pagina.final50
dc.pagina.inicio41
dc.revistaReview of palaeobotany and palynology
dc.rightsacceso restringido
dc.subjectPaleogene of Arauco
dc.subjectEarly Eocene
dc.subjectleaf physiognomy
dc.subjectpaleoclimate
dc.subjectcentral Chile
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.titleOn the persistence of Tropical Paleofloras in central Chile during the Early Eocene
dc.typeartículo
dc.volumen137
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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