Planktonic foraminifera assemblages and sea surface temperature reconstruction of IODP Site 383-U1539
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2025
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| _version_ | 1867168238605959168 |
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| author | de Castro, Maria Júlia Venancio, Igor Martins Santos, Thiago Lessa, Douglas Villela de Oliveira Ballalai, João M Albuquerque, Ana Luiza |
| author_facet | de Castro, Maria Júlia Venancio, Igor Martins Santos, Thiago Lessa, Douglas Villela de Oliveira Ballalai, João M Albuquerque, Ana Luiza |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This dataset comprises planktonic foraminifera assemblages and sea surface temperature (SST) reconstructions generated using the Modern Analogue Technique (MAT). The record spans 0.5 to 1.3 Ma, covering intervals before, during, and after the Middle Pleistocene Transition (MPT). It includes the sample code, depth in meters CSF-A (core depth below seafloor, method A), interpolated age in million years (Ma), sea surface temperature (°C) with associated weighted standard deviation, as well as the relative abundances (%) of planktonic foraminifera species. Sediment was recovered by drilling during IODP Expedition 383 at Site U1539, located in the South Pacific sector of the Southern Ocean. Samples were washed through a 63 µm mesh size sieve and subsequently dried at approximately 50°C for 24 hours. Once dried, samples were sieved through a 250 µm mesh. Species-level identification was performed using a stereomicroscope. These assemblage data were used to reconstruct SSTs with the MAT, implemented in C2 Software (version 1.8.0), using the Squared Chord Distance dissimilarity coefficient and leave-one-out cross-validation. The resulting SST estimates were applied as a proxy to investigate the latitudinal migration of oceanic fronts-particularly the Polar Front-during the MPT, to assess the mechanisms driving these shifts and their impact on the central South Pacific. The use of foraminiferal assemblages as a proxy for palaeoceanographic changes follows Kucera (2007; https://doi.org/10.1016/S1572-5480(07)01011-1). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_984574 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Planktonic foraminifera assemblages and sea surface temperature reconstruction of IODP Site 383-U1539 de Castro, Maria Júlia Venancio, Igor Martins Santos, Thiago Lessa, Douglas Villela de Oliveira Ballalai, João M Albuquerque, Ana Luiza 383-U1539A; 383-U1539C; 383-U1539D; Advanced piston corer; Age; Calculated following Kucera (2007); CDRILL; Core drilling; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Event label; Exp383; Globigerina bulloides; Globigerinita glutinata; Globigerinita uvula; Globigerinoides ruber; Globoconella inflata; Globoconella puncticulata; Globorotalia crassaformis; Half; interpolated; IODP 383; IODP Depth Scale Terminology; Joides Resolution; mid-Pleistocene transition; Modern Analogue Technique (MAT); Neogloboquadrina incompta; Neogloboquadrina pachyderma; Oceanic fronts; Planktonic foraminifera assemblage; Sample code/label; Sea surface temperature; Sea surface temperature, standard deviation; Southern Ocean; South Pacific; Turborotalita quinqueloba This dataset comprises planktonic foraminifera assemblages and sea surface temperature (SST) reconstructions generated using the Modern Analogue Technique (MAT). The record spans 0.5 to 1.3 Ma, covering intervals before, during, and after the Middle Pleistocene Transition (MPT). It includes the sample code, depth in meters CSF-A (core depth below seafloor, method A), interpolated age in million years (Ma), sea surface temperature (°C) with associated weighted standard deviation, as well as the relative abundances (%) of planktonic foraminifera species. Sediment was recovered by drilling during IODP Expedition 383 at Site U1539, located in the South Pacific sector of the Southern Ocean. Samples were washed through a 63 µm mesh size sieve and subsequently dried at approximately 50°C for 24 hours. Once dried, samples were sieved through a 250 µm mesh. Species-level identification was performed using a stereomicroscope. These assemblage data were used to reconstruct SSTs with the MAT, implemented in C2 Software (version 1.8.0), using the Squared Chord Distance dissimilarity coefficient and leave-one-out cross-validation. The resulting SST estimates were applied as a proxy to investigate the latitudinal migration of oceanic fronts-particularly the Polar Front-during the MPT, to assess the mechanisms driving these shifts and their impact on the central South Pacific. The use of foraminiferal assemblages as a proxy for palaeoceanographic changes follows Kucera (2007; https://doi.org/10.1016/S1572-5480(07)01011-1). |
| title | Planktonic foraminifera assemblages and sea surface temperature reconstruction of IODP Site 383-U1539 |
| topic | 383-U1539A; 383-U1539C; 383-U1539D; Advanced piston corer; Age; Calculated following Kucera (2007); CDRILL; Core drilling; DEPTH, sediment/rock; DSDP/ODP/IODP sample designation; Event label; Exp383; Globigerina bulloides; Globigerinita glutinata; Globigerinita uvula; Globigerinoides ruber; Globoconella inflata; Globoconella puncticulata; Globorotalia crassaformis; Half; interpolated; IODP 383; IODP Depth Scale Terminology; Joides Resolution; mid-Pleistocene transition; Modern Analogue Technique (MAT); Neogloboquadrina incompta; Neogloboquadrina pachyderma; Oceanic fronts; Planktonic foraminifera assemblage; Sample code/label; Sea surface temperature; Sea surface temperature, standard deviation; Southern Ocean; South Pacific; Turborotalita quinqueloba |
| url | https://doi.org/10.1594/PANGAEA.984574 |