(Table 1) Dinoflagellate cysts and acritarchs in upper Pliocene and Pleistocene sediments from ODP Hole 151-911A ...

• Main Authors: Matthiessen, Jens, Brenner, Wolfram W
• Format: Dataset
• Language: English
• Published: PANGAEA 1996
• Subjects: Sample code/label; DEPTH, sediment/rock; Dinoflagellate cyst; Dinoflagellate cyst per unit mass; Algidasphaeridium minutum; Achomosphaera spp.; Ataxiodinium choane; Bitectatodinium tepikiense; Brigantedinium spp.; Brigantedinium simplex; Filisphaera filifera; Habibacysta tectata; Impagidinium spp.; Impagidinium aculeatum; Impagidinium paradoxum; Impagidinium patulum; Impagidinium pallidum; Impagidinium cf. strialatum; Impagidinium sp.; Lejeunecysta spp.; Lejeunecysta communis; Lejeunecysta mariae; Lejeunecysta sp.; Lingulodinium machaerophorum; Nematosphaeropsis labyrinthus; Operculodinium centrocarpum; Operculodinium crassum; Operculodinium psilatum; Operculodinium sp.; Pentapharsodinium cf. dalei; Protoperidinium spp.; Selenopemphix nephroides; Selenopemphix quanta; Spiniferites spp.; Spiniferites elongatus; Spiniferites mirabilis; Stelladinium stellatum; Trinovantedinium variabile; Acritarch sp.; Dinoflagellate cyst indeterminata; Dinoflagellate zone; Drilling/drill rig; DSDP/ODP/IODP sample designation; Leg151; Joides Resolution; Ocean Drilling Program ODP; Arctic Ocean; Greenland; Greenland Sea; Norwegian Sea; Sea ice; Yermak plateau
• Online Access: https://dx.doi.org/10.1594/pangaea.761371; https://doi.pangaea.de/10.1594/PANGAEA.761371

Pliocene and Pleistocene sediments from Ocean Drilling Program Leg 151, Hole 911 A, drilled on the innermost Yermak Plateau (Eastern Arctic Ocean), were studied for their dinoflagellate cyst content. Three assemblage zones were tentatively defined, characterized by the predominance of few species. The composition of the assemblages changed markedly, even within single assemblage zones, during the last 2.6 to 2.8 m.y., reflecting the variable influence of warmer water from the Norwegian Sea, fluctuations in the influence of cold polar water masses, and the extent of sea-ice cover. Polar to subpolar surface water masses prevailed on the Yermak Plateau during the late Pliocene, when the eastern Arctic Ocean was probably isolated from the Norwegian-Greenland Sea. Intrusions of warmer water are recorded since the latest Pliocene, alternating with colder periods and a prolonged seasonal sea-ice cover. The composition of the dinoflagellate cyst assemblages has also changed considerably since the middle Pleistocene, ... : Supplement to: Matthiessen, Jens; Brenner, Wolfram W (1996): Dinoflagellate Cyst Ecostratigraphy of Pliocene–Pleistocene Sediments from the Yermak Plateau (Arctic Ocean, Hole 911A). In: Thiede, J; Myhre, AM; Firth, JV; Johnsin, GL & Ruddiman, WF (eds.) Proceedings of the Ocean Drilling Program, Scientific Results; College Station, Texas (Ocean Drilling Program), 151, 243-253 ...