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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2025
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| Online Access: | https://doi.org/10.1594/PANGAEA.984405 |
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| _version_ | 1867168238381563904 |
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| author | Jones, Heather Niederbockstruck, Bryan Westerhold, Thomas Röhl, Ursula |
| author_facet | Jones, Heather Niederbockstruck, Bryan Westerhold, Thomas Röhl, Ursula |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | In this dataset, we show the raw relative abundance count data for calcareous nannofossils observed in sediment samples from International Ocean Discovery Program (IODP) Expedition 378, Site U1553, Hole D, located on the Campbell Plateau in the high paleolatitude SW Pacific Ocean. 66 smear slides spanning the late Paleocene - early Eocene (ca. 55.7 to 56.5 Ma) - including the Paleocene-Eocene Thermal Maximum (PETM) and an apparent pre-cursor event - were examined under a polarising light microscope at 1000 to 1600x magnification. At least 300 nannofossil specimens were counted in each sample and identified to species-level whenever possible (genus-level when not), predominantly using the taxonomic concepts collated in the online database Nannotax. Due to the presence of non-classic forms and intermediate morphotypes of species belonging to the Toweius/Prinsius evolutionary lineage, our taxonomic concepts for these taxa differed slightly from those presented on Nannotax and are therefore detailed further in the 'Methods' section of the source text (Jones et al. 2025). Our genus-level relative abundance data were then used to document nannofossil assemblage change during the PETM and pre-cursor event using the previously-published age model and bulk sediment carbon isotope data in Niederbockstruck et al. (2024). After Hellinger data standardisation, the genus-level raw data were also used in a two-way cluster analysis and multiple Principal Components Analyses (PCA)'s to better visualise distinct paleoecological groups as Site U1553 and to compare our data to nannofossil assemblage data from other sites. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_984405 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Late Paleocene - early Eocene calcareous nannofossil relative abundance count data from IODP Site 378-U1553D (Campbell Plateau, SW Pacific Ocean) Jones, Heather Niederbockstruck, Bryan Westerhold, Thomas Röhl, Ursula 378-U1553D; Age; AGE; Assemblages; Biantholithus spp.; Biscutum braloweri; Biscutum harrisonii; Braarudosphaera spp.; calcareous nannofossil; Calcidiscus pacificanus; Calcidiscus parvicrucis; Calcispheres; Campbell Plateau; Campylosphaera dela; Center for Marine Environmental Sciences; Chiasmolithus bidens; Chiasmolithus consuetus; Chiasmolithus nitidus; Chiasmolithus solitus; Chiasmolithus spp.; Clausicoccus fenestratus; ClusterOceanFloor; coccolith abundances; coccolithophore; Coccolithus cf. bownii; Coccolithus cf. pauxillus; Coccolithus pelagicus; Core; Counting; Craticullithus cassus; Cruciplacolithus spp.; Cruise/expedition; Cyclicargolithus parvus; Depth, composite revised, adjusted; DEPTH, sediment/rock; Discoaster lenticularis; Discoaster mohleri; Discoaster multiradiatus; Discoaster salisburgensis; Discoaster spp.; DRILL; Drilling/drill rig; early Eocene; Ellipsolithus bollii; Exp378; Fasciculithus clinatus; Fasciculithus indeterminata; Fasciculithus involutus; Fasciculithus tympaniformis; Hole; Holococcolith spp.; Hornibrookina spp.; hyperthermal event; IODP 378; Joides Resolution; late Paleocene; Markalius apertus; Markalius inversus; Markalius latus; MARUM; Micrantholithus spp.; Micropaleontology; Nannofossils, other; Neochiastozygus digitosus; Neochiastozygus distentus; Neochiastozygus junctus; Neochiastozygus rosenkrantzii; Neochiastozygus spp.; Neococcolithes protenus; Offset; Paleocene-Eocene Thermal Maximum (PETM); paleoecology; Pontosphaera spp.; Prinsius bisulcus; Prinsius martinii; relative abundance; Sample code/label; Scientific drilling; Section; Site; Site U1553; South Pacific Ocean; Sphenolithus moriformis; SW Pacific; The Ocean Floor - Earth's Uncharted Interface; Toweius callosus; Toweius eminens; Toweius occultatus; Toweius patellus; Toweius pertusus; Toweius serotinus; Toweius spp.; Toweius spp., small; Toweius tovae; Umbilicosphaera sp.; Ypresian; Zeugrhabdotus sigmoides; Zygrhablithus bijugatus In this dataset, we show the raw relative abundance count data for calcareous nannofossils observed in sediment samples from International Ocean Discovery Program (IODP) Expedition 378, Site U1553, Hole D, located on the Campbell Plateau in the high paleolatitude SW Pacific Ocean. 66 smear slides spanning the late Paleocene - early Eocene (ca. 55.7 to 56.5 Ma) - including the Paleocene-Eocene Thermal Maximum (PETM) and an apparent pre-cursor event - were examined under a polarising light microscope at 1000 to 1600x magnification. At least 300 nannofossil specimens were counted in each sample and identified to species-level whenever possible (genus-level when not), predominantly using the taxonomic concepts collated in the online database Nannotax. Due to the presence of non-classic forms and intermediate morphotypes of species belonging to the Toweius/Prinsius evolutionary lineage, our taxonomic concepts for these taxa differed slightly from those presented on Nannotax and are therefore detailed further in the 'Methods' section of the source text (Jones et al. 2025). Our genus-level relative abundance data were then used to document nannofossil assemblage change during the PETM and pre-cursor event using the previously-published age model and bulk sediment carbon isotope data in Niederbockstruck et al. (2024). After Hellinger data standardisation, the genus-level raw data were also used in a two-way cluster analysis and multiple Principal Components Analyses (PCA)'s to better visualise distinct paleoecological groups as Site U1553 and to compare our data to nannofossil assemblage data from other sites. |
| title | Late Paleocene - early Eocene calcareous nannofossil relative abundance count data from IODP Site 378-U1553D (Campbell Plateau, SW Pacific Ocean) |
| topic | 378-U1553D; Age; AGE; Assemblages; Biantholithus spp.; Biscutum braloweri; Biscutum harrisonii; Braarudosphaera spp.; calcareous nannofossil; Calcidiscus pacificanus; Calcidiscus parvicrucis; Calcispheres; Campbell Plateau; Campylosphaera dela; Center for Marine Environmental Sciences; Chiasmolithus bidens; Chiasmolithus consuetus; Chiasmolithus nitidus; Chiasmolithus solitus; Chiasmolithus spp.; Clausicoccus fenestratus; ClusterOceanFloor; coccolith abundances; coccolithophore; Coccolithus cf. bownii; Coccolithus cf. pauxillus; Coccolithus pelagicus; Core; Counting; Craticullithus cassus; Cruciplacolithus spp.; Cruise/expedition; Cyclicargolithus parvus; Depth, composite revised, adjusted; DEPTH, sediment/rock; Discoaster lenticularis; Discoaster mohleri; Discoaster multiradiatus; Discoaster salisburgensis; Discoaster spp.; DRILL; Drilling/drill rig; early Eocene; Ellipsolithus bollii; Exp378; Fasciculithus clinatus; Fasciculithus indeterminata; Fasciculithus involutus; Fasciculithus tympaniformis; Hole; Holococcolith spp.; Hornibrookina spp.; hyperthermal event; IODP 378; Joides Resolution; late Paleocene; Markalius apertus; Markalius inversus; Markalius latus; MARUM; Micrantholithus spp.; Micropaleontology; Nannofossils, other; Neochiastozygus digitosus; Neochiastozygus distentus; Neochiastozygus junctus; Neochiastozygus rosenkrantzii; Neochiastozygus spp.; Neococcolithes protenus; Offset; Paleocene-Eocene Thermal Maximum (PETM); paleoecology; Pontosphaera spp.; Prinsius bisulcus; Prinsius martinii; relative abundance; Sample code/label; Scientific drilling; Section; Site; Site U1553; South Pacific Ocean; Sphenolithus moriformis; SW Pacific; The Ocean Floor - Earth's Uncharted Interface; Toweius callosus; Toweius eminens; Toweius occultatus; Toweius patellus; Toweius pertusus; Toweius serotinus; Toweius spp.; Toweius spp., small; Toweius tovae; Umbilicosphaera sp.; Ypresian; Zeugrhabdotus sigmoides; Zygrhablithus bijugatus |
| url | https://doi.org/10.1594/PANGAEA.984405 |