SciELO - Scientific Electronic Library Online

 
vol.21 issue1Tandilia author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO

Share


Serie correlación geológica

On-line version ISSN 1666-9479

Abstract

HEREDIA, Susana  and  ROSALES, Carla. Conodont Biofacies of the Ponón Trehué Formation and its biostratigraphical importance as a type section for the Middle - Upper Oordovician of Cuyania (Argentina). Ser. correl. geol. [online]. 2006, vol.21, n.1, pp.7-16. ISSN 1666-9479.

The Ponón Trehué Formation (Mendoza Province, Argentina) is composed by a coarse clastic sequence transitionally followed by a fine dark carbonate sequence. The following conodont biozones can be recognized: Pygodus serra Zone with the Eoplacognathus robustus Subzone and the Eoplacognathus lindstroemi Subzone, and Pygodus anserinus Zone with the Sagittodontina kielcensis subzone and the Amorphognathus inaequalis subzone. Conodont population was studied and analysed, and several biofacies of the upper Middle Ordovician-lower Upper Ordovician conodonts from the Ponón Trehué Formation have been recorded. The significance of this section is pointed out as type locality for the Middle-Upper Ordovician boundary at Cuyania.

Keywords : Ponón Trehué; Mendoza; Conodonts; Middle-Upper Ordovician biostratigraphy; Biofacies.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License