Marino, Maria; Trotta, Samanta; Duque-Castaño, Mónica; Rodrigues, Teresa; Voelker, Antje H L (2025): Paleoclimatic reconstructions during Marine Isotope Stage (MIS) 43 to late MIS 49 (1.35-1.47 Ma) at IODP Site 339-U1387 in the Gulf of Cadiz based on nanno- and microfossil and lipid biomarker data [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.986646
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Published: 2025-11-03 • DOI registered: 2025-11-03
Abstract:
A high-resolution dataset is provided on marine and terrestrial biomarkers, alkenone-derived sea surface temperature (SST), and calcareous plankton key taxa in temporally well constrained, high resolution benthic and planktonic oxygen isotope records at Integrated Ocean Drilling Program site U1387 in the Gulf of Cadiz. The investigated time interval encompasses the Early Pleistocene marine isotope stages (MIS) late 49 to MIS 43. The aim is to evidence millennial climate variability during glacial phases of the "41 kyr world" and understand the impact of North Atlantic climate dynamics on the southern Portuguese margin.
Quantitative analyses on coccolithophore assemblages were performed at the Dipartimento di Scienze della Terra e Geoambientali, Bari University (Italy), using a polarized light microscope at 1000 X magnification, and abundances were determined by counting at least 500 coccoliths of all sizes. Abundances of taxa were expressed as percentage. Total coccolith abundances were expressed as n°/g of sediment. Reworked coccoliths or nannoliths plus lithics (>10 micron) have been counted separately during the analysis. Nannofossil dissolution index (DI) has been calculated as follows: small gephyrocapsids/(small gephyrocapsids + Calcidiscus leptoporus). The extraction of marine and terrestrial lipid biomarkers was performed in the biogeochemistry lab of the Instituto Português do Mar e da Atmosfera (IPMA). The sea surface temperature (SST) was derived from the U₃₇ᴷ' values: SST [Uk'37 = (0.033*SST) + 0.044]. The percentage abundance of Neogloboquadrina pachyderma was obtained by a counting of the assemblages of the fraction >150 microns. The age model was obtained by tuning the site U1387 Globigerina bulloides δ18O record (Voelker, 2025) to the high-resolution G. bulloides δ18O record of IODP site U1385 on its LR04-related chronology.
Supplement to:
Trotta, Samanta; Duque-Castaño, Mónica; Rodrigues, Teresa; Voelker, Antje H L; Maiorano, Patrizia; Balestra, Barbara; Flores, José-Abel; Siniscalchi, Agata; Addante, Marina; Marino, Maria (2025): High-frequency glacial climate instability during the Early Pleistocene: Insights from IODP site U1387 (Gulf of Cadiz). Palaeogeography, Palaeoclimatology, Palaeoecology, 674, 113041, https://doi.org/10.1016/j.palaeo.2025.113041
Related to:
Trotta, Samanta; Marino, Maria; Voelker, Antje H L; Rodrigues, Teresa; Maiorano, Patrizia; Flores, José-Abel; Girone, Angela; Addante, Marina; Balestra, Barbara (2022): Early Pleistocene calcareous nannofossil assemblages from the Gulf of Cadiz reveal glacial-interglacial and millennial-scale variability. Palaeogeography, Palaeoclimatology, Palaeoecology, 608, 111304, https://doi.org/10.1016/j.palaeo.2022.111304
References:
Voelker, Antje H L (2025): Planktonic and benthic foraminifera carbon and oxygen stable isotope records of IODP Site 339-U1387 (Gulf of Cadiz) for the interval of Marine Isotope Stage (MIS) 42 to MIS 46 (1.34-1.41 Ma) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.986643
Project(s):
Coverage:
Median Latitude: 36.805327 * Median Longitude: -7.718883 * South-bound Latitude: 36.805232 * West-bound Longitude: -7.719013 * North-bound Latitude: 36.805410 * East-bound Longitude: -7.718795
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
3 datasets
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Datasets listed in this bundled publication
- Duque-Castaño, M; Voelker, AHL (2025): Relative abundance of planktonic foraminifera Neogloboquadrina pachyderma between Marine Isotope Stage (MIS) 43 and late MIS 49 in IODP Site 339-U1387, Gulf of Cadiz. https://doi.org/10.1594/PANGAEA.986647
- Marino, M; Rodrigues, T; Duque-Castaño, M et al. (2025): Quantitative data on calcareous nannofossil assemblages between Marine Isotope Stage (MIS) 43 and late MIS 49 in the IODP Site 339-U1387, Gulf of Cadiz. https://doi.org/10.1594/PANGAEA.986648
- Trotta, S; Rodrigues, T (2025): Lipid biomarker and Sea-surface Temperature results for the interval of Marine Isotope Stage (MIS) 43 to late MIS 46 in IODP Site 339-U1387, Gulf of Cadiz. https://doi.org/10.1594/PANGAEA.986649