Summary
Sediment cores taken during a deep-sea geological expedition in the Gulf of Guinea have been studied micropalaeontologically.
The fine-grained sediments below 1350 m sea depth contain a foraminiferal fauna, consisting of over 90% planktonic forms, accompanied by benthonic species characteristic of the Recent abyssal environments above the calcium carbonate compensation level.
Sandy layers bearing a high percentage of displaced shallow-water benthonic Foraminifera are often intercalated in these fine sediments in the submarine canyons and fan deposits at the canyon head.
Moreover, it became apparent that a thin blanket of Recent/ Holocene sediments covers Pleistocene deposits of the same environment. Only one core penetrated into Pliocene strata.
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Brouwer, J. (1974). Foraminiferal Faunas from Deep-Sea Sediments in the Gulf of Guinea. In: The Deep-Sea Canyons in the Gulf of Guinea Near Fernando Póo. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-7014-9_2
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