Abstract

BERNASCONI, Emiliana  and  CUSMINSKY, Gabriela. Benthic foraminifers of a Holocene core from the Colorado Basin, Argentina. Ameghiniana [online]. 2007, vol.44, n.2, pp.271-278. ISSN 1851-8044.

Fifty species of benthic foraminifera from a core of the Argentine Continental Shelf were identified. Elphidium discoidale (d'Orbigny), Buccella peruviana campsi (Boltovskoy), Quinqueloculina patagonica d'Orbigny and Quinqueloculina seminula (Linné) were the dominant species. The association is characteristic of inner shelf environments. Qualitative and quantitative analyses allow the recognition of a lower zone with an assemblage typical of restricted environments, and an upper zone which, according to foraminifers, reflects a change towards normal marine conditions. The core was deposited during the post last glacial maximum transgression, about 10.000 yr B.P.

Keywords : Benthic foraminifers; Holocene; Argentine Continental Shelf; Relative sea level variations.