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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

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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):
IODP 383; mid-Pleistocene transition; Modern Analogue Technique (MAT); Oceanic fronts; Planktonic foraminifera assemblage; Southern Ocean; South Pacific
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. 49558SM
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
Universidade de São Paulo (USP), grant/award no. 22.1.09345.01.2
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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventde Castro, Maria Júlia
2 Sample code/labelSample labelde Castro, Maria JúliaDSDP/ODP/IODP sample designation
3 HalfHalfde Castro, Maria Júlia
4 DEPTH, sediment/rockDepth sedmde Castro, Maria JúliaIODP Depth Scale TerminologyGeocode – CSF-A
5 AgeAgeMade Castro, Maria Júliainterpolated
6 Cluster numberCluster#de Castro, Maria JúliaCluster group
7 Sea surface temperatureSST°Cde Castro, Maria JúliaReconstructed, modern analogue technique
8 Sea surface temperature, standard deviationSST std dev±de Castro, Maria JúliaReconstructed, modern analogue technique
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
891 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Sample label		3 
Half		4 
Depth sed [m]		5 
Age [Ma]		6 
Cluster [#]		7 
SST [°C]		8 
SST std dev [±]
383-U1539C 383-U1539C-10H-1,143-145Working (W)86.930.49302204522.3182112801.813301836
383-U1539C383-U1539C-10H-2,33-35Working (W)87.330.49698513722.0936130601.842384837
383-U1539C383-U1539C-10H-3,4-6Working (W)88.530.50887441252.2807764191.814103039
383-U1539C383-U1539C-10H-3,124-126Working (W)89.730.52076368622.4778947831.975644700
383-U1539C383-U1539C-10H-4,15-17Working (W)90.130.52472677852.7387037961.635161380
383-U1539C383-U1539C-10H-4,135-137Working (W)91.330.53638550021.8009485081.601542430
383-U1539C383-U1539C-10H-5,66-68Working (W)92.130.54272421522.2047996491.799333422
383-U1539C383-U1539C-10H-5,146-148Working (W)92.930.54906292932.2269083981.847088764
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383-U1539C383-U1539C-11H-1,35-37Working (W)95.350.56487009852.8741096791.600687871
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383-U1539D 383-U1539D-9H-2,134-136Working (W)105.330.63105392441.0514665261.329066623
383-U1539D383-U1539D-9H-3,65-67Working (W)106.130.63473787240.7579381570.774580218
383-U1539D383-U1539D-9H-4,35-37Working (W)107.330.64026379440.4340753830.653587068
383-U1539D383-U1539D-9H-4,115-117Working (W)108.130.64394774240.6408425530.632120349
383-U1539C383-U1539C-12H-4-,14-16Working (W)109.150.66234906241.5301757371.641295482
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383-U1539C383-U1539C-12H-6,32-34Working (W)112.350.67408656140.7640813471.359015396
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383-U1539C383-U1539C-13H-2,115-117Working (W)116.660.72118544852.1820384991.768294833
383-U1539C383-U1539C-13H-3,45-47Working (W)117.460.72290985253.4534347091.408993771
383-U1539C383-U1539C-13H-3,125-127Working (W)118.260.72463425652.3463529661.849582222
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383-U1539D383-U1539D-12H-1,86-88Working (W)124.360.74186751440.5330646020.804479851
383-U1539D383-U1539D-12H-2,27-29Working (W)125.160.74359191852.6338071671.596784526
383-U1539D383-U1539D-12H-2,147-149Working (W)126.360.74617852322.0732028421.842872465
383-U1539C383-U1539C-14H-3,65-67Working (W)127.150.75134526831.7822842171.560851527
383-U1539C383-U1539C-14H-4,35-37Working (W)128.350.75393187341.2991411421.360148298
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383-U1539C383-U1539C-14H-5,84-86Working (W)130.350.75824288241.7481262381.550881733
383-U1539C383-U1539C-14H-6,55-57Working (W)131.150.75996728640.9947723821.295919164
383-U1539C383-U1539C-14H-7,47-49Working (W)132.350.76255389140.7623347160.774582445
383-U1539C383-U1539C-15H-1,6-8Working (W)133.060.76516205240.4907391440.717566959
383-U1539C383-U1539C-15H-2,16-18Working (W)134.660.76861085941.5450298201.645536489
383-U1539C383-U1539C-15H-2,56-58Working (W)135.060.76953738350.5407601900.809351300
383-U1539C383-U1539C-15-H-3-,24-26Working (W)136.250.77256426140.9969989081.295941177
383-U1539C383-U1539C-15H-3,144-146Working (W)137.450.77561657540.7579377260.774578915
383-U1539C383-U1539C-15H-4,74-76Working (W)138.250.77765145133.0551569101.827207542
383-U1539C383-U1539C-15H-5,4-6Working (W)139.060.77971176332.0345360061.789539835
383-U1539C383-U1539C-15H-5,124-126Working (W)140.260.78276407751.5434994971.696546235
383-U1539C383-U1539C-16H-1,66-68Working (W)143.160.79653909931.2671069741.622428297
383-U1539C383-U1539C-16H-2,39-41Working (W)144.360.80922446140.5390131180.816110384
383-U1539C383-U1539C-16H-2,119-121Working (W)145.160.81899079731.3524922131.440774858
383-U1539C383-U1539C-16H-3,93-95Working (W)146.360.83364030141.0603595541.435991681
383-U1539C383-U1539C-16H-4,26-28Working (W)147.160.84340663640.5390161950.816112102
383-U1539C383-U1539C-16H-5,79-81Working (W)149.160.86213971361.8009910381.601555388
383-U1539C383-U1539C-16H-5,119-121Working (W)149.560.86868233863.8241176551.183118151
383-U1539D383-U1539D-15H-3,132-134Working (W)150.830.87520860741.5135533441.683178682
383-U1539D383-U1539D-15H-4,21-23Working (W)151.230.87938987730.7667343580.889553643
383-U1539D383-U1539D-15H-4,101-103Working (W)152.030.88649674240.4907382680.717571673
383-U1539D383-U1539D-15H-5,71-73Working (W)153.230.89715703953.1386531011.802421435
383-U1539D383-U1539D-15H-6,15-17Working (W)154.030.90426390451.4951297471.678735346
383-U1539C383-U1539C-17H-2,56-58Working (W)154.070.91779571462.9480275521.687810450
383-U1539C383-U1539C-17H-3,65-67Working (W)155.670.92869994732.5106493741.947377431
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383-U1539C383-U1539C-17H-4,74-76Working (W)157.270.93641830053.0048249671.794783342
383-U1539C383-U1539C-17H-5,03-05Working (W)158.070.94027747722.2895007931.813556451
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383-U1539D383-U1539D-17H-2,141-143Working (W)160.890.95186465564.0449308541.529693699
383-U1539D383-U1539D-17H-3,30-32Working (W)161.290.95379424462.9833058472.497497711
383-U1539C383-U1539C-18H-1,65-67Working (W)162.150.95867491952.3378787821.810685504
383-U1539C383-U1539C-18H-2,38-40Working (W)163.350.9613205600.4343749391.344045610
383-U1539C383-U1539C-18H-2,118-120Working (W)164.150.96308432031.8009874391.601542454
383-U1539C383-U1539C-18H-3,92-94Working (W)165.350.96572996131.7822819661.560851954
383-U1539C383-U1539C-18H-4,71-73Working (W)166.150.96749372231.7822602481.560838020
383-U1539C383-U1539C-18H-5,93-95Working (W)167.350.97013936240.5390128270.816109725
383-U1539C383-U1539C-18H-6,26-28Working (W)168.150.97190312341.1095098241.362197611
383-U1539C383-U1539C-18H-7,28-30Working (W)169.350.97454876441.4951267641.678730662
383-U1539D383-U1539D-19H-2,8-10Working (W)171.090.97895816540.5407604210.809350882
383-U1539D383-U1539D-19H-3,18-20Working (W)172.690.98248568652.9243121771.736397311
383-U1539D383-U1539D-19H-3,58-60Working (W)173.090.98336756723.0268640331.764905524
383-U1539C383-U1539C-19H-3,11-13Working (W)174.040.99217975552.1299250241.738169339
383-U1539C383-U1539C-19H-3,131-133Working (W)175.240.99482539622.7786192721.695883743
383-U1539C383-U1539C-19H-4,65-67Working (W)176.040.99658915731.8009739561.601541913
383-U1539C383-U1539C-19H-5,38-40Working (W)177.240.99923479732.0791105301.843029663
383-U1539C383-U1539C-19H-5,118-120Working (W)178.441.00188043852.4773887471.975618675
383-U1539C383-U1539C-19H-6,91-93Working (W)179.241.00364419951.9358171431.938573446
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383-U1539D383-U1539D-20H-2,78-80Working (W)181.281.00804698631.5135269801.683163225
383-U1539D383-U1539D-20H-3,7-9Working (W)182.081.00981074732.1955308191.799350716
383-U1539D383-U1539D-20H-3,127-129Working (W)183.281.01245638740.4907354990.717569091
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383-U1539C383-U1539C-23H-6,88-90Working (W)217.421.18620605740.4907379960.717571031
383-U1539C383-U1539C-24H-1,02-04Working (W)218.521.19390219641.3613485771.678121559
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