Revision of the Maastrichtian-Palaeocene charophyte biostratigraphy of the Fontllonga reference section (southern Pyrenees, Catalonia, Spain)
Vicente, Alba (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà)
Villalba Breva, Sheila (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà)
Ferràndez i Cañadell, Carles (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà)
Martín-Closas, Carles (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà)

Date:	2014
Abstract:	The Fontllonga section is one of the best-known stratigraphic sections wordwide for the study of charophyte biostratigraphy of the Maastrichtian and lower Palaeocene. An updated proposal for the charophyte biostratigraphy of this section is presented after summarizing previous knowledge. The zone of Peckichara cancellata allows the upper Campanian-lowermost Maastrichtian to be characterised in the base of the section (La Maçana Formation). The Microchara punctata biozone represents most of the Maastrichtian (Figuerola Formation). Within this biozone, a Clavator ultimus subzone is proposed to improve characterisation of the lower and middle Maastrichtian. Both the upper and lower boundaries of the Microchara punctata biozone proposed in previous studies are modified based on new occurrences of the index species. A charophyte assemblage belonging to the Dughiella bacillaris biozone is reported for the first time from the middle of the section (Perauba Complex) and provides an age for this unit ranging from the upper Danian to lower Thanetian. A foraminifer assemblage found in the basal marine deposits above the non-marine succession of the Fontllonga section provides new biostratigraphic data to locate the upper boundary of the non-marine succession at least within the upper Thanetian.
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:	Charophyta ; Chara ; Biozonation ; Àger basin ; Chronostratigraphy ; Iberia ; Maastrichtian-paleocene
Published in:	Geologica acta, Vol. 14 Núm. 4 (december 2016) , p. 349-362 (Articles) , ISSN 1696-5728

Adreça alternativa: https://raco.cat/index.php/GeologicaActa/article/view/316041
DOI: 10.1344/GeologicaActa2016.14.4.2

14 p, 2.2 MB

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