de Castro, Maria Júlia; Venancio, Igor Martins; Santos, Thiago; Lessa, Douglas Villela de Oliveira; Ballalai, João M; Albuquerque, Ana Luiza (2025): Cluster groups and sea surface temperature reconstruction of IODP Site 383-U1539 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.984573
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Published: 2025-08-28 • DOI registered: 2025-09-26
Abstract:
This dataset contains planktonic foraminifera assemblage groups defined by cluster analysis, alongside sea surface temperature (SST) reconstructions generated with 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). Sediments were 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 sieve, dried at approximately 50°C for 24 hours, and subsequently sieved through a 250 µm mesh. Species-level identification was performed using a stereomicroscope. Counts of each species were converted into relative abundances (%), which were then used as input for cluster analysis performed in PAST Software (version 4.14) applying the unweighted pair group method with arithmetic mean (UPGMA) algorithm and the Bray–Curtis similarity index. The dataset includes the sample code, depth in meters CSF-A (core depth below seafloor, method A), interpolated age in million years (Ma), MAT-derived SST estimates (°C) with corresponding weighted standard deviations, and the cluster group assigned to each sample following the classification proposed by de Castro et al. (2025; doi:10.1016/j.marmicro.2025.102501). These data were used as proxies to reconstruct and characterize paleoceanographic changes in the central South Pacific between 0.5 and 1.3 Ma, encompassing the MPT. MAT analysis, which was performed following the previous description by Hutson (1980; doi:10.1126/science.207.4426.64) and Kucera et al. (2005; doi:10.1016/j.quascirev.2004.07.014).
Keyword(s):
Related to:
de Castro, Maria Júlia; Venancio, Igor Martins; Santos, Thiago Pereira dos; Lessa, Douglas V O; Ballalai, João M; Albuquerque, Ana Luiza Spadano (2025): Migration of oceanic fronts in the Pacific Southern Ocean during the Mid-Pleistocene transition. Marine Micropaleontology, 200, 102501, https://doi.org/10.1016/j.marmicro.2025.102501
References:
Hutson, W H (1980): The Agulhas Current During the Late Pleistocene: Analysis of Modern Faunal Analogs. Science, 207(4426), 64-66, https://doi.org/10.1126/science.207.4426.64
Kucera, Michal; Weinelt, Mara; Kiefer, Thorsten; Pflaumann, Uwe; Hayes, Angela; Weinelt, Martin; Chen, Min-Te; Mix, Alan C; Barrows, Timothy T; Cortijo, Elsa; Duprat, Josette M; Juggins, Stephen; Waelbroeck, Claire (2005): Reconstruction of sea-surface temperatures from assemblages of planktonic foraminifera: multi-technique approach based on geographically constrained calibration datasets and its application to glacial Atlantic and Pacific Oceans. Quaternary Science Reviews, 24(7-9), 951-998, https://doi.org/10.1016/j.quascirev.2004.07.014
Funding:
Coordenação de Aperfeicoamento de Pessoal de Nível Superior (CAPES), grant/award no. 8881.712022/2022-1
Coordenação de Aperfeicoamento de Pessoal de Nível Superior (CAPES), grant/award no. 88881.512929/2020-01
Coordenação de Aperfeicoamento de Pessoal de Nível Superior (CAPES), grant/award no. 88887.906110/2023-00
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), grant/award no. 260003/001327/2025
Coverage:
Median Latitude: -56.151133 * Median Longitude: -115.134000 * South-bound Latitude: -56.151200 * West-bound Longitude: -115.134100 * North-bound Latitude: -56.151000 * East-bound Longitude: -115.133800
Date/Time Start: 2019-05-31T15:15:00 * Date/Time End: 2019-06-07T03:30:00
Minimum DEPTH, sediment/rock: 86.93 m * Maximum DEPTH, sediment/rock: 237.52 m
Event(s):
383-U1539A * Latitude: -56.151000 * Longitude: -115.134100 * Date/Time Start: 2019-05-31T15:15:00 * Date/Time End: 2019-06-02T05:25:00 * Elevation: -4071.1 m * Number of cores: 12 * Penetration: 107.6 m * Recovery: 97.35 % * Campaign: EXP383 * Basis: Joides Resolution * Method/Device: Advanced piston corer
383-U1539C * Latitude: -56.151200 * Longitude: -115.133800 * Date/Time Start: 2019-06-03T13:00:00 * Date/Time End: 2019-06-05T15:30:00 * Elevation: -4081.0 m * Number of cores: 32 * Penetration: 268.1 m * Recovery: 92.32 % * Campaign: EXP383 * Basis: Joides Resolution * Method/Device: Core drilling (CDRILL) * Comment: APC cores (N): 26, HLAPC cores (N): 6
383-U1539D * Latitude: -56.151200 * Longitude: -115.134100 * Date/Time Start: 2019-06-05T15:30:00 * Date/Time End: 2019-06-07T03:30:00 * Elevation: -4081.0 m * Number of cores: 14 * Penetration: 198 m * Recovery: 99.13 % * Campaign: EXP383 * Basis: Joides Resolution * Method/Device: Advanced piston corer
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | de Castro, Maria Júlia | |||
| 2 | Sample code/label | Sample label | de Castro, Maria Júlia | DSDP/ODP/IODP sample designation | ||
| 3 | Half | Half | de Castro, Maria Júlia | |||
| 4 | DEPTH, sediment/rock | Depth sed | m | de Castro, Maria Júlia | IODP Depth Scale Terminology | Geocode – CSF-A |
| 5 | Age | Age | Ma | de Castro, Maria Júlia | interpolated | |
| 6 | Cluster number | Cluster | # | de Castro, Maria Júlia | Cluster group | |
| 7 | Sea surface temperature | SST | °C | de Castro, Maria Júlia | Reconstructed, modern analogue technique | |
| 8 | Sea surface temperature, standard deviation | SST std dev | ± | de Castro, Maria Júlia | Reconstructed, modern analogue technique |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
891 data points