Análisis microfaunístico del Cenomaniense de Arceniega (Cuenca Navarro-Cántabra).

  1. Rodriguez Lazaro, J. 1
  2. Barroso Barcenilla, F. 2
  3. Martín-Rubio, M. 1
  1. 1 Universidad del País Vasco/Euskal Herriko Unibertsitatea
    info

    Universidad del País Vasco/Euskal Herriko Unibertsitatea

    Lejona, España

    ROR https://ror.org/000xsnr85

  2. 2 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR https://ror.org/02p0gd045

Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2003

Issue: 34

Pages: 115-118

Type: Article

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Abstract

The analysis of calcareous microfauna (foraminifers, ostracods) of the Arceniega Formation allows to decipher different phases on the palaeoenvironmental evolution of this part of the Navarro-Cantabrian Basin during the Cenomanian. The generalised marine ingression of the beginning of the Upper Cretaceous occurred in the region during the deposition of the Arceniega unit, in the early Cenomanian. After an interval with regressive trend, a sustained transgressive phase was developed during the late Cenomanian, which represents the deepest sediments of shelf settlements of the Mesozoic. Some biotic proxies, particularly that of the platycopic ostracod signal, evidence intervals with important in flux of hypoxic waters.

Data source: Dialnet