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Please use this identifier to cite or link to this item: http://hdl.handle.net/10362/1470

Título: Notes sur la géologie et la paleontology du Miocène de Lisbonne
Autor: Fonseca, B.
Palavras-chave: Stratigraphy
micropaleontology
Tagus basin
Palença
Miocene
coccolithophorids
Issue Date: 15-Jul-2008
Resumo: This note deals with the stratigraphical and paleontological study of the Palença section on the southern bank of the river Tagus, Portugal, and specially with its coccolithophorids. Three main lithostratigraphical units may be recognized: the lowest one does correspond to the upper part of COTTER's division II, the intermediate one to divisions III and IV-a, the third corresponding to pratically the whole division IV-b, However other and higher levels are also represented. Higher beds are also represented in the same sections; they are less well exposed and were not studied in detail. Caracterisation of biozones on the basis of Coccoliths so far found at Palença section is difficultsince MARTINI's zones have been defined mainly by forms of Discoaster and other genera that are wanting. However we can recognize that the richest assemblage (from beds 17-18, the uppermost layers of blue clays IV-a) may correspond to NN4. This is not in opposition to the results of the study of planctonic foraminifera, that are characteristic of BLOW's N7. Coccoliths from lower beds do not allow at present any valid comparisons.
URI: http://hdl.handle.net/10362/1470
Appears in Collections:FCT: DCT - Ciências da Terra

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