Planktonic foraminifera faunal data and sea-surface temperatures for the Marine Isotope Stage (MIS) 18 to MIS 28 interval of IODP Site 339-U1387, Gulf of Cadiz
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2025
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| _version_ | 1867167683288498176 |
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| author | Voelker, Antje H L Mega, Aline Rodrigues, Teresa |
| author_facet | Voelker, Antje H L Mega, Aline Rodrigues, Teresa |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | In this study we focus on IODP Site U1387 on the southern Portuguese margin to reconstruct surface water circulation and related plankton foraminifera ecosystem changes during the interval of Marine Isotope Stage (MIS) 28 to MIS 18 (1006-750 ka). Our planktonic foraminifera assemblages and SST reconstructions (foraminifera assemblages and UK'37 alkenone index) demonstrate warm, stable SST conditions during much of the interval due to persistent influence of subtropical gyre waters as indicated by the tropical-subtropical and Azores Current related foraminifera species and the periods with dominant sinistral coiling direction of the species Globorotalia truncatulinoides. Maximum interglacial SSTs were up to 2ºC warmer than at present in both summer and winter, with the exception of interglacial MIS 23 with SSTs ~1.5°C colder than in the other interglacials. The relative warm conditions were periodically interrupted by millennial-scale extreme cold events when polar species Neogloboquadrina pachyderma became abundant (>30%) and the SSTs, reconstructed from the foraminifera assemblage data, dropped below 10°C in summer and 5 °C in winter. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_974451 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Planktonic foraminifera faunal data and sea-surface temperatures for the Marine Isotope Stage (MIS) 18 to MIS 28 interval of IODP Site 339-U1387, Gulf of Cadiz Voelker, Antje H L Mega, Aline Rodrigues, Teresa Alkenone Uk'37 index; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; mid-Pleistocene transition; Planktic d18O; Planktic foraminifera assemblage; Sea surface temperature In this study we focus on IODP Site U1387 on the southern Portuguese margin to reconstruct surface water circulation and related plankton foraminifera ecosystem changes during the interval of Marine Isotope Stage (MIS) 28 to MIS 18 (1006-750 ka). Our planktonic foraminifera assemblages and SST reconstructions (foraminifera assemblages and UK'37 alkenone index) demonstrate warm, stable SST conditions during much of the interval due to persistent influence of subtropical gyre waters as indicated by the tropical-subtropical and Azores Current related foraminifera species and the periods with dominant sinistral coiling direction of the species Globorotalia truncatulinoides. Maximum interglacial SSTs were up to 2ºC warmer than at present in both summer and winter, with the exception of interglacial MIS 23 with SSTs ~1.5°C colder than in the other interglacials. The relative warm conditions were periodically interrupted by millennial-scale extreme cold events when polar species Neogloboquadrina pachyderma became abundant (>30%) and the SSTs, reconstructed from the foraminifera assemblage data, dropped below 10°C in summer and 5 °C in winter. |
| title | Planktonic foraminifera faunal data and sea-surface temperatures for the Marine Isotope Stage (MIS) 18 to MIS 28 interval of IODP Site 339-U1387, Gulf of Cadiz |
| topic | Alkenone Uk'37 index; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; mid-Pleistocene transition; Planktic d18O; Planktic foraminifera assemblage; Sea surface temperature |
| url | https://doi.org/10.1594/PANGAEA.974451 |