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.
|Title of host publication||European Paleontological Association Workshop: Abstracts|
|Place of Publication||Lisboa|
|Publication status||Published - Jul 1999|
|Event||European Paleontological Association Workshop - Lisboa, Lisboa, Portugal|
Duration: 22 Jun 1999 → 25 Jun 1999
|Workshop||European Paleontological Association Workshop|
|Period||22/06/99 → 25/06/99|