Neogene planktonic foraminifera of DSDP Leg 41 holes ...

• Main Authors: Krasheninnikov, Valery A, Pflaumann, Uwe
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1978
• Subjects: Drilling/drill rig; Leg41; Glomar Challenger; Deep Sea Drilling Project DSDP; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.758432; https://doi.pangaea.de/10.1594/PANGAEA.758432

During Leg 41 Neogene sediments were recovered from five sites off northwest Africa.On the Sierra Leone Rise (Site 366), Neogene sediments consist of nanno oozes, nanno chalk, and calcareous clays 230 meters thick, resting conformably on the late Oligocene sediments. The common succession of zones occurs with two hiatuses. The lower gap corresponds to an interval around the lower/middle Miocene boundary (the Praeorbulina glomerosa and Orbulina suturalis-Globorotalia peri-pheroronda zones are absent) and the upper gap coincides with an interval around the middle/upper Miocene boundary (the Sphaeroidinellopsis sub-dehiscens-GIobigerina druryi, Globigerina nepenthes-Globorotalia siakensis and Globorotalia conlinuosa zones are missing).In the Cape Verde Basin (Site 367) deep-water Neogene turbidites (about 200-250 m thick) contain poor fauna of redeposited and sorted Cretaceous, Eocene, Oligocene, and Neogene species.On the Cape Verde Rise (Site 368) the Neogene section starts with slightly calcareous and ... : Supplement to: Krasheninnikov, Valery A; Pflaumann, Uwe (1978): Zonal stratigraphy of Neogene deposits of the eastern part of the Atlantic Ocean by means of planktonic foraminifers, Leg 41 Deep Sea Drilling Project. In: Lancelot, Y; Seibold, E; Gardner, JV; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Government Print Office), 41, 613-657 ...