The Vembo Shales (Republic of the Congo): new insights on the transition from lacustrine to marine settings in the South Atlantic

Vincent Delhaye-Prat , G. Dupont , N. Buratti , J.M. Moron , J. Esnault , Vincent Perrichot (1) , Et Al.

1 GR - Géosciences Rennes

The Vembo Shales, originally defined in Gabon, are also recorded in Congo where they are recognized as the “terme argilo-carbonaté”[1]. This member of the Chéla Formation (Aptian), deposited just below the evaporites of the Loémé Formation, was recently identified in outcrops located 70 km to the NE of Pointe-Noire (Fig. 1) along the National Road 1 (RN1). These outcrops were not stratigraphically well-constrained due to the lack of fauna and were previously attributed [2] to undifferentiated Cretaceous (Fig.1) based on facies characteristics that are similar to succession exposed in outcrops in Gabon.

Domains: Sciences of the Universe [physics]; Earth Sciences; Paleontology; Sciences of the Universe [physics]; Earth Sciences; Stratigraphy

Vincent Delhaye-Prat, G. Dupont, N. Buratti, J.M. Moron, J. Esnault, et al.. The Vembo Shales (Republic of the Congo): new insights on the transition from lacustrine to marine settings in the South Atlantic. 35th International Geological Congress, Aug 2016, Le Cap, South Africa. Paper n°2850. ⟨insu-01450905⟩