Palynomorphs from the Ribeira da Lage section (Lower Tortonian, Lower Tagus Basin, Portugal)

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Palynomorphs from "Ribeira da Lage" were studied. The section is Lower Tortonian (N15, 87Sr/86Sr dating 11.3-12.2 Ma) in age, and correspond to the local depositional sequence T1. Pollen indicate open forests with mediterranean taxa. Peridinioid dinoflagellates predominate in the lower part of the section indicating the proximity of the literal and large productivity and/or up-welling currents, with low oxygen levels at the bottom. The disappearance of peridinioids, and development of gonyaulacoids in the upper part of the section may correspond to a more oxygenated neritic environment. Key-words: palynomorphs, dinoflagellates, Miocene, Tortonian, Ribeira da Lage, Lower Tagus Basin, Portugal.
Original languageEnglish
Title of host publicationEuropean Paleontological Association Workshop: Abstracts
Place of PublicationLisboa
Publication statusPublished - Jul 1999
EventEuropean Paleontological Association Workshop - Lisboa, Lisboa, Portugal
Duration: 22 Jun 199925 Jun 1999


WorkshopEuropean Paleontological Association Workshop


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