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doi:10.2204/iodp.proc.317.207.2014 Data report: Quaternary dinoflagellate cyst and pollen census counts from IODP Hole U1352B, Canterbury Basin, New Zealand1Joseph Graham Prebble,2 Erica M. Crouch,2 and Giuseppe Cortese2AbstractPollen, spore, and dinoflagellate cyst census counts are reported from Hole U1352B, part of Integrated Ocean Drilling Program Expedition 317 to the Canterbury Basin, New Zealand. Fifty one samples were processed for palynology between 91.1 and 181.5 m composite depth. Based on the shipboard biostratigraphy, the samples described here include sediment deposited during marine isotope Stages 12–10. Preservation of dinoflagellate cysts and pollen was generally good, although palynomorphs were frequently obscured by the presence of abundant terrestrial organic matter (cuticle and wood fragments) that was observed in all slides. Dinoflagellate cyst assemblages were dominated by the heterotrophic genus Brigantedinium, which made up, on average, 78% of the assemblage (range = 36%–98%). Alternation of two broad pollen associations was observed. Pollen assemblages dominated by Poaceae, Halocarpus, Phyllocladus, and Caryophyllaceae/Chenopodiaceae, interpreted to represent an alpine or cooler climate vegetation, alternated with a pollen assemblage dominated by Fuscospora fusca and Prumnopitys/Podocarpus, reflecting warmer interglacial conditions. |
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