Nouvelle découverte de Miocène supérieur à Abidjan, Côte d'Ivoire

Abstract

The discovery of Upper Miocene marine layers in a water-borehole in Abidjan, to the north of the great tectonical fault zone dividing lengthwise the terrestrial part of the Ivory Coast sedimentary basin, incited us to study their microfauna, palynoflora and nannoflora in detail. To our knowledge it is for the first time that fossils of the two last named groups of such age have been studied in Ivory Coast and none of the characteristic species of the three groups illustrated up to now. The study has been carried out within the geological and sedimentological framework of the borehole.