Age determination and planktonic foraminifera og ODP Site 159-958 ...

• Main Authors: Pflaumann, Uwe, Sarnthein, Michael, Ficken, Katherine, Grothmann, Alexandra, Winkler, Amelie
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1998
• Subjects: Composite Core; Drilling/drill rig; Leg159T; Joides Resolution; Ocean Drilling Program ODP; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.737662; https://doi.pangaea.de/10.1594/PANGAEA.737662

Site 958 was drilled to monitor the late Neogene history of both continental aridity in northwestern Africa and the Canary Current distant from nearshore upwelling. Based on magnetostratigraphy, biostratigraphic datums, variations in carbonate, coarse fraction components, and the species composition of planktonic foraminifers, as well as using the d18O records of Globigerinoides ruber (white), we established a splice between Holes 958A and 958B and a stratigraphic age scale deciphering Milankovitch cycles. Over the last 630 k.y., sedimentation rates amount to 2.9 cm/k.y., and to 2.05-2.53 cm/k.y. back to the base of the Pleistocene. Extremely low rates of 0.4 cm/k.y. and a reworking of fossils mark the late Pliocene. The first continuous, long, sea-surface temperature (SST) record from the center of the Canary Current, which is based on foraminifer species census data, depicts a general temperature decrease in the late Pliocene, lower SST and high seasonalities of up to 6°C ~2.0-1.6 Ma, a warmer interval ... : Supplement to: Pflaumann, Uwe; Sarnthein, Michael; Ficken, Katherine; Grothmann, Alexandra; Winkler, Amelie (1998): Variations in eolian and carbonate sedimentation, sea surface temperature, and productivity off N.W. Africa over the last 3 M.Y. at Site 958 off Northwest Africa. In: Firth, JV (ed.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 159T, 3-16 ...