Dinoflagellate cyst counts of sediment core GIK23071-3

DOI

Marine sediments from the Vøring Plateau (Norwegian Sea) have been studied for their dinoflagellate cyst (dinocyst) and foraminiferal content in order to reconstruct sea-surface conditions in the eastern Norwegian Sea during Marine Isotope Stage (MIS) 5e. In combination with stable oxygen isotope and ice rafted detritus (IRD) data, the variations in foraminiferal and dinocyst assemblage composition reflect a stepwise transition from the final phase of deglaciation (Termination II) into typical interglacial conditions. This stepwise change is repeated subsequently during the cooling conditions of glacial inception towards MIS 5d. The interval studied is characterized by relatively high abundances of Bitectatodinium tepikiense, in comparison to present-day values in the area, indicating a larger seasonal temperature amplitude with enhanced surface water stratification during MIS 5e. The important occurrence of the warm-temperate dinocyst Spiniferites mirabilis s.l. concurrent with subpolar foraminifers Turborotalita quinqueloba, Globigerina bulloides, and Globigerinita glutinata reveals that most pronounced interglacial marine conditions prevailed in the area just prior to the transition towards MIS 5d. The late stratigraphic position of this phase in the interglacial is verified by comparison with dinocyst data from south of Iceland, manifesting its over-regional implication. Besides the good agreement in dinocyst and foraminiferal assemblage changes, the variations in and between both fossil assemblages also point to the existence of some significant surface water variability in the eastern Norwegian Sea during MIS 5e.

<1 indicates that the species is present, but was not encountered during counting; a question mark indicates that the determination of the species is questionable; the number following the question mark gives the number of questionable specimens encountered during counting

Supplement to: Van Nieuwenhove, Nicolas; Bauch, Henning A; Matthiessen, Jens (2008): Last interglacial surface water conditions in the eastern Nordic Seas inferred from dinocyst and foraminiferal assemblages. Marine Micropaleontology, 66(3-4), 247-263

Identifier
DOI https://doi.org/10.1594/PANGAEA.603233
Related Identifier IsSupplementTo https://doi.org/10.1016/j.marmicro.2007.10.004
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.603233
Provenance
Creator Van Nieuwenhove, Nicolas ORCID logo; Bauch, Henning A; Matthiessen, Jens ORCID logo
Publisher PANGAEA
Publication Year 2008
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 2112 data points
Discipline Earth System Research
Spatial Coverage (2.908 LON, 67.085 LAT); Norwegian Sea