Preliminary investigation of Late Turonian-Early Campanian shallow marine foraminifera of the Mungo River/Logbadjeck Formation, NW Douala Basin, Cameroon

Shallow urban aquifers under hyper-recharge equatorial conditions and strong anthropogenic constrains. Implications in terms of groundwater resources potential and integrated water resources management strategies

“…They can be divided into seven formations from the bottom to the top (Fig. 4): i) Mundeck's conglomerates and sandstones (Apto-Albian), ii) Logbadjeck's conglomerates, sandstones and limestones (Turonian-Santonian), iii) Logbaba's sands, sandstones and clays (Campanian-Maastrichtian), iv) Nkapa's limestone, sandstone, marl and shales (Paleocene-Eocene), v) 8 Souellaba's clays and sands (Oligocene-Lower Miocene), vi) Matanda's clays, sands and gravels (Upper Miocene-Pliocene) and vii) Wouri layers (Quaternary) consisting of clays, sands and gravels (Dumort 1968;Njike Ngaha 1984;Regnoult 1986;Nguene et al 1992;SNH/UD 2005;Manga 2008;Njoh & Petters 2014;Njike Ngaha et al 2014).…”

Palynostratigraphy of the Paleocene-Eocene Shallow marine petroleum source rock sections, outcropping in Missole, Nkapa Formation, Douala/Kribi- Campo Basin, Cameroon

“…1a and b). Strategically located within the central part of and sometime described as the ''arm-pit'' of the Gulf of Guinea, the basin comprises two sub basins; the Douala sub-Basin to the north and northeast, linking the Gulf of Guinea sedimentary basins of the Equatorial Atlantic, and the Kribi-Campo sub-Basin to the south, linking the basins of the Gulf of Guinea in the South Atlantic (Njoh and Petters, 2013). The sedimentary in ll consists of Early Cretaceous to Recent continental uvio-lacustrine to marine sequences in the on-shore and off-shore portions of the basin.…”

“…1a & b) is strategically located in this sub region as it holds the history of the separation of South America from the African continent and the opening of the South Atlantic Ocean (Benkhelil et al, 2002;Lawrence et al 2002;Ntamak-nida et al, 2008Ntamak-nida et al, , 2010. Genetically, this basin relays the geology of the petroliferous Niger Delta and Rio del Rey basins to the west with that of the coastal basins of Gabon and Angola to the south (Njoh and Petters, 2013). The Douala/Kribi-Campo Basin is one of the two coastal sedimentary basins (the other; Rio-del-Rey Basin) that line the coastal plains of Cameroon and is made up of two sub-basins: the Douala sub-Basin which is the focus of the present work and the Kribi-Campo sub-Basin.…”

Shallow Marine Cenomanian-Turonian Benthic Foraminifera and Kerogen Type from Mangoule, Logbadjeck Formation, Douala/Kribi-Campo Basin, Cameroon, West Africa

“…The present study area is located within the Douala sub-Basin (Figure 3) wherein some small to considerably thick sedimentary sections that are exposed mainly as roadside cuts along the Douala-Bonepoupa-Yabassi road under construction, were sampled for this work. As in most exploration basins, several key previous publications are known, which have contributed to the current knowledge of the tectono-stratigraphic evolution, biostratigraphy, and petroleum potentials of this basin: ([1]- [12]), amongst others. Only a few published works [11] [13] [14] are found in literature on the palynostratigraphy of this…”