CALCAREOUS NANNOFOSSILS FROM LA BARCA FORMATION (PALEOCENE/EOCENE BOUNDARY), TIERRA DEL FUEGO, ARGENTINA
Keywords:Austral Basin. Calcareous Nannofossils. Biostratigraphy. PETM. Fuegian Andes
AbstractThe La Barca Formation, an organic-carbon rich sedimentary succession exposed along the Atlantic coast of Península Mitre (Tierra del fuego, Argentina), was initially assigned to the late Paleocene, based on foraminifera and dinocysts. Planktonic foraminifera or calcareous nannofossils were not previously recorded in the two members of this formation. New samples of the upper member provided calcareous nannofossils that correlate with the late Paleocene-early Eocene assemblages in the Southern Hemisphere, spanning nannofossil zones NP9a/NP9b. The Paleocene/Eocene boundary in the La Barca Formation could be placed between the last occurrences of Fasciculithus richardii group and F. alanii, and the first occurrence of Romboaster cf. R. cuspis.
How to Cite
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.