Palynological characterization of a transgressive episode in transitional deposits in the cretaceous aren and tremp formations (south-central Pyrenees, Spain)

  1. Torices, A. 12
  2. Fernández-Marrón, M.-T. 3
  3. Fonollá, F. 1
  4. López-Martínez, N.
  1. 1 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

  2. 2 University of Alberta
    info

    University of Alberta

    Edmonton, Canadá

    ROR https://ror.org/0160cpw27

  3. 3 Instituto de Geociencias
    info

    Instituto de Geociencias

    Madrid, España

    ROR https://ror.org/04qan0m84

Revista:
Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen

ISSN: 0077-7749

Año de publicación: 2012

Volumen: 266

Número: 2

Páginas: 159-172

Tipo: Artículo

DOI: 10.1127/0077-7749/2012/0291 SCOPUS: 2-s2.0-84876078544 GOOGLE SCHOLAR

Otras publicaciones en: Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen

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Resumen

The overall marine regression leading to the infilling of the Cretaceous Pyrenean basin was punctuated by transgressive episodes. These events produced a complex architecture in the interfingering deposits in the marine Aren and continental Tremp formations in south-central Pyrenees. The Vicari section is useful for studying the lateral change between these marine-continental deposits bearing fossil vertebrates and pollen. In this section, palynological changes reveal in detail transgressive and regressive events in the lower part of the continental Tremp Formation, which could not be detected otherwise by non-correlated lithological changes. A rapid regression is documented through the contact between the lower Aren and Tremp deposits: in-situ dinosaur egg clutches and other vertebrate remains are preserved with terrestrial palynomorphs indicating warm humid palaeoclimatic conditions (tree ferns, cycads, etc.). Furthermore, palynological content, rich in marine phytoplankton, reveals a transgressive episode in the upper grey marls in the Tremp Formation. © 2012 E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Germany.