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Palynological dataset at ODP Site 882 (North Pacific) during the Plio-Pleistocene
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Zorzi, Coralie; de Vernal, Anne — 2024 This data set presents the palynological row data performed on sediment samples from the ODP Hole 882A (50°21.79'N, 167°35.99'E, 3244 m) drilled on the Detroit Seamount in the northern part of the Hawaiian-Emperor Seamount Chain in the North Pacific Ocean during the Plio-Pleistocene. A total of 44 samples were analyzed for their palynological contents using a transmitted light microscope at 250× to 1000× magnification. The palynomorphs analyzed included dinocysts, acritarchs, pollen grains, spores and other palynofacies. In the study sequence, the assemblages are characterized by 33 dinocyst species, 2 acritarch taxa, 8 pollen morphotypes. Row counts are shown (number of identified specimens), as well as labels, depth (in mcd) and estimated age (Ma) of the studied samples. https://creativecommons.org/licenses/by/4.0/legalcode
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Percentage of pollen and spore taxa in sediment core AMD0509-20
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Vallerand, Joan; de Vernal, Anne; Roy, Natasha — 2024 The percentage of pollen and spore taxa was calculated based on the sum of pollen grains exclusively. The data are reported vs depth and vs ages calibrated based on Marine20. https://creativecommons.org/licenses/by/4.0/legalcode
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Sea-surface conditions estimated from dinocyst assemblages in sediment core AMD0509-20
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Vallerand, Joan; de Vernal, Anne; Roy, Natasha — 2024 The summer sea-surface temperature and salinity, the seasonal duration of sea-ice cover, and the mean annual productivity were estimated based on the modern analogue technique applied to dinocyst data. The most probable estimates (weighted average of values from the 5 best analogues) are given in the table. The data are reported vs depth and vs ages calibrated based on Marine20. https://creativecommons.org/licenses/by/4.0/legalcode
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Percentage of dinocyst taxa in sediment core AMD0509-20
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Vallerand, Joan; de Vernal, Anne; Roy, Natasha — 2024 The percentage of each dinocyst taxa was calculated based on the sum of all dinocysts counted. The data are reported vs depth and vs ages calibrated based on Marine20. https://creativecommons.org/licenses/by/4.0/legalcode
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Concentrations of palynomorphs in sediment core AMD0509-20
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Vallerand, Joan; de Vernal, Anne; Roy, Natasha — 2024 The concentration of palynomorphs was estimated from the marker-grain methods and reported in specimens per cubic centimetre of wet sediment. The palynomorphs include marine microfossils (dinocysts, organic linings of foraminifers and remains of ciliates), freshwater microfossils (Pediastrum), pollen and spores from land vegetation, in addition to reworked palynomorphs.The data are reported vs depth and vs ages calibrated based on Marine20. https://creativecommons.org/licenses/by/4.0/legalcode

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(auteur : de Vernal, Anne)

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