Late Pliocene and Early Pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several IODP and DSDP sites in the North Atlantic ...

• Main Authors: De Schepper, Stijn, Fischer, Eva I, Groeneveld, Jeroen, Head, Martin J, Matthiessen, Jens
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2011
• Subjects: Drilling/drill rig; Leg93; Leg94; Exp303; Exp306; Glomar Challenger; Joides Resolution; Deep Sea Drilling Project DSDP; Integrated Ocean Drilling Program / International Ocean Discovery Program IODP; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.758713; https://doi.pangaea.de/10.1594/PANGAEA.758713

In an attempt to document the palaeoecological affinities of individual extant and extinct dinoflagellate cysts, Late Pliocene and Early Pleistocene dinoflagellate cyst assemblages have been compared with geochemical data from the same samples. Mg/Ca ratios of Globigerina bulloides were measured to estimate the spring-summer sea-surface temperatures from four North Atlantic IODP/DSDP sites. Currently, our Pliocene-Pleistocene database contains 204 dinoflagellate cyst samples calibrated to geochemical data. This palaeo-database is compared with modern North Atlantic and global datasets. The focus lies in the quantitative relationship between Mg/Ca-based (i.e. spring-summer) sea-surface temperature (SSTMg/Ca) and dinoflagellate cyst distributions. In general, extant species are shown to have comparable spring-summer SST ranges in the past and today, demonstrating that our new approach is valid for inferring spring-summer SST ranges for extinct species. For example, Habibacysta tectata represents SSTMg/Ca ... : Supplement to: De Schepper, Stijn; Fischer, Eva I; Groeneveld, Jeroen; Head, Martin J; Matthiessen, Jens (2011): Deciphering the palaeoecology of Late Pliocene and Early Pleistocene dinoflagellate cysts. Palaeogeography, Palaeoclimatology, Palaeoecology, 309(1-2), 17-32 ...