FORAMINIFEROS (PROTOZOA) y OSTRACODOS (ARTHROPODA) DE LAS "LUTITAS DE RIO FOYEL" (OLIGOCENO) DE LA CUE CA DE ÑIRIHUAU, PROVINCIA DE RIO NEGRO, REPUBLICA ARGENTINA

Authors

  • S. A. BERTELS CICTERRA (CONICET-UNC)

Abstract

Chronostratigraphic, paleogeographic and paleoeco logical aspects of the marine sediments informally known as "Foyel River Shales" are inferred. The strata belong to the Leonian Stage and are equivalent to the type Upper Lattorfian and Chattian Stages, although the upper levels could be earliest Miocene in age. This marine sedimentary basin was probably fonned during late Eocene times. Epeirogenic movements, which occured during the early Oligocene, caused the deepening of the Austral Basin and its connection with the Ñirihuau basin at the time of the deposition of the Leonian Stage. The Ñirihuau assemblage shows depositional features of restricted sea conditions and a gradual shaJlowing of the water mass.

Downloads

Published

2013-09-06

Issue

Vol. 17 No. 1

Section

Articles

License

Authors publishing in Ameghiniana have the option of making their article freely available online. Authors opting for the Open Access must pay a fee of $300 (US dollars) to cover article-processing costs and to ensure the article is made open access. Please contact the Production Team after the acceptance of your manuscript if you are interested in making your article Open Access. This option implies by default a license Creative Commons Attribution Non-Commercial-NoDerivs License (CC BY NC ND). If your funding institution requires a different licensing option please communicate this to the Production Team after the acceptance of your manusctipt.

How to Cite

FORAMINIFEROS (PROTOZOA) y OSTRACODOS (ARTHROPODA) DE LAS "LUTITAS DE RIO FOYEL" (OLIGOCENO) DE LA CUE CA DE ÑIRIHUAU, PROVINCIA DE RIO NEGRO, REPUBLICA ARGENTINA. (2013). Ameghiniana, 17(1), 49-52. https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1608