Coccolithophore relative abundances at the Ideale Section - Montalbano Jonico, Southern Italy
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2021
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| _version_ | 1867168211766607872 |
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| author | Maiorano, Patrizia |
| author_facet | Maiorano, Patrizia |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | In the present dataset we provide relative abundance (%) of the main taxa of the coccolithophore. Slides for coccolithophore analysis were prepared following Flores and Sierro (1997). Quantitative analyses were performed at University of Bari, Italy, using a polarized light microscope at 1000× magnification. Abundances were determined by counting at least 500 coccoliths of all sizes. We also provide estimate of reworked calcareous nannofossils, i.e. taxa belonging to older (Mesozoic and Paleogene-Neogene) stratigraphic intervals, estimated separately during this counting. Warm-water coccoliths include the following taxa: Umbilicosphaera sibogae s.l., Calciosolenia spp., Discosphaera tubifera, Rhabdospaera clavigera, Umbellosphaera spp., Oolithotus spp. The coccolith dissolution index (DI) was estimated according to the following ratio: DI = small Gephyrocapsa/(small Gephyrocapsa + Calcidiscus leptoporus). High values of DI indicate good preservation. Species dominance of the coccolithophore assemblage has been obtained using PAleontological STatistics Software 4.02 (Hammer et al., 2001) and is equivalent to 1-Simpson index. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_934193 |
| institution | PANGAEA |
| language | en |
| publishDate | 2021 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Coccolithophore relative abundances at the Ideale Section - Montalbano Jonico, Southern Italy Maiorano, Patrizia AGE; Coccoliths, reworked; Coccoliths, warm; Dominance; Florisphaera profunda; Gephyrocapsa, small; Gephyrocapsa, small + medium; Gephyrocapsa caribbeanica; Gephyrocapsa oceanica; Helicosphaera carteri; Montalbano_Jonico; OUTCROP; Outcrop sample In the present dataset we provide relative abundance (%) of the main taxa of the coccolithophore. Slides for coccolithophore analysis were prepared following Flores and Sierro (1997). Quantitative analyses were performed at University of Bari, Italy, using a polarized light microscope at 1000× magnification. Abundances were determined by counting at least 500 coccoliths of all sizes. We also provide estimate of reworked calcareous nannofossils, i.e. taxa belonging to older (Mesozoic and Paleogene-Neogene) stratigraphic intervals, estimated separately during this counting. Warm-water coccoliths include the following taxa: Umbilicosphaera sibogae s.l., Calciosolenia spp., Discosphaera tubifera, Rhabdospaera clavigera, Umbellosphaera spp., Oolithotus spp. The coccolith dissolution index (DI) was estimated according to the following ratio: DI = small Gephyrocapsa/(small Gephyrocapsa + Calcidiscus leptoporus). High values of DI indicate good preservation. Species dominance of the coccolithophore assemblage has been obtained using PAleontological STatistics Software 4.02 (Hammer et al., 2001) and is equivalent to 1-Simpson index. |
| title | Coccolithophore relative abundances at the Ideale Section - Montalbano Jonico, Southern Italy |
| topic | AGE; Coccoliths, reworked; Coccoliths, warm; Dominance; Florisphaera profunda; Gephyrocapsa, small; Gephyrocapsa, small + medium; Gephyrocapsa caribbeanica; Gephyrocapsa oceanica; Helicosphaera carteri; Montalbano_Jonico; OUTCROP; Outcrop sample |
| url | https://doi.org/10.1594/PANGAEA.934193 |