Molina, Giulia Silveira; Voelker, Antje H L; Ogretmen, Nazik: Benthic foraminiferal carbon and oxygen stable isotope records, carbon isotope gradient and reconstructed bottom-water oxygen concentration for the Marine Isotope Stage (MIS) 17 to MIS 32 interval, and MIS 51, of IODP Site 339-U1387, Gulf of Cadiz [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996414 (dataset in review), In: Molina, Giulia Silveira; Andersen, Nils; Pena, Leopoldo D; Ogretmen, Nazik; Voelker, Antje H L: Multi-proxy record of upper Mediterranean Outflow Water oxygenation variability during the Early to Middle Pleistocene (Marine Isotope Stages 17 to 32, and MIS 51) of IODP Site U1387, Gulf of Cadiz [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996410 (dataset in review)
Abstract:
This dataset contains benthic foraminiferal stable carbon (d13C) and oxygen (d18O) isotope records and reconstructed bottom-water oxygen from IODP Site U1387 (36°48.32′N, 07°43.13′W; 559 m water depth), on the middle slope of the Faro Drift in the Gulf of Cadiz. The isotopes were measured on epibenthic and deep-infaunal foraminifera to quantify bottom-water oxygen and ventilation across Marine Isotope Stages (MIS) 17 to 32, plus MIS 51, in the Early to Middle Pleistocene. Measurements were performed mainly at the Leibniz Laboratory (Kiel University, Germany), and partly at Erlangen-Nürnberg and MARUM (University of Bremen), on a Finnigan MAT 253 mass spectrometer coupled to a Kiel IV carbonate preparation device, values are reported relative to the Vienna Pee Dee Belemnite (VPDB) standard. Bottom-water oxygen (µmol/kg) was reconstructed from the epibenthic–deep-infaunal carbon-isotope gradient (Dd13C) following Hoogakker et al. (2015). The age model for MIS 18 to 32 is based on correlation of the planktonic (d18O) record of Globigerina bulloides from Site U1387 to IODP Site U1385 (aligned to the LR04 benthic isotope stack; Lisiecki and Raymo, 2005), whereas the MIS 51 chronology is based on correlation of the benthic d18O record to IODP Site U1308. Ages are also given on the Probstack time scale (Ahn et al., 2017).
The study also includes paired stable carbon (d13C) and oxygen (d18O) isotope measurements of the deep-infaunal foraminifera Globobulimina affinis and Globobulimina turgida. Both species were measured in the same 40 samples, across Marine Isotope Stages (MIS) 18 to 32 in the Early to Middle Pleistocene, in order to determine the isotopic offset between them. Mean offsets of −0.15 ‰ (d13C) and −0.20 ‰ (d18O) were found between the two species. These offsets are what let the two species be merged into the single continuous deep-infaunal record used for the isotope and oxygen datasets from this site.
Keyword(s):
References:
Ahn, Seonmin; Khider, D; Lisiecki, Lorraine E; Lawrence, Charles E (2017): A probabilistic Pliocene–Pleistocene stack of benthic δ18O using a profile hidden Markov model. Dynamics and Statistics of the Climate System, 2(1), https://doi.org/10.1093/climsys/dzx002
Hoogakker, Babette A A; Elderfield, Henry; Schmiedl, Gerhard; McCave, I Nicholas; Rickaby, Rosalind E M (2015): Glacial–interglacial changes in bottom-water oxygen content on the Portuguese margin. Nature Geoscience, 8(1), 40-43, https://doi.org/10.1038/ngeo2317
Lisiecki, Lorraine E; Raymo, Maureen E (2005): LR04 Global Pliocene-Pleistocene benthic d18O stack [dataset]. NOAA National Centers for Environmental Information, https://doi.org/10.25921/K88J-0106
Funding:
Fundação para a Ciência e Tecnologia (FCT), grant/award no. 2021.06553.BD: Impacts of early to middle Pleistocene climate change on the sea floor environment of the Gulf of Cadiz – evidence from benthic foraminifera
Coverage:
Median Latitude: 36.805351 * Median Longitude: -7.718868 * South-bound Latitude: 36.805232 * West-bound Longitude: -7.719013 * North-bound Latitude: 36.805410 * East-bound Longitude: -7.718795
Minimum Elevation: -558.7 m * Maximum Elevation: -558.2 m
Event(s):
339-U1387A * Latitude: 36.805410 * Longitude: -7.719013 * Elevation: -558.7 m * Recovery: 347.84 m * Campaign: Exp339 (Mediterranean Outflow) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 38 cores; 352.4 m cored; 99 % recovered; 352.4 m penetrated
339-U1387B * Latitude: 36.805410 * Longitude: -7.718797 * Elevation: -558.2 m * Recovery: 327.61 m * Campaign: Exp339 (Mediterranean Outflow) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 36 cores; 338.3 m cored; 97 % recovered; 338.3 m penetrated
339-U1387C * Latitude: 36.805232 * Longitude: -7.718795 * Elevation: -558.4 m * Recovery: 409.5 m * Campaign: Exp339 (Mediterranean Outflow) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 61 cores; 580 m cored; 71 % recovered; 870 m penetrated
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Molina, Giulia Silveira | |||
| 2 | Sample code/label | Sample label | Molina, Giulia Silveira | DSDP/ODP/IODP sample designation | ||
| 3 | Depth, sediment/rock, top/minimum | Depth sed top | m | Molina, Giulia Silveira | mbsf | |
| 4 | Depth, composite top | Depth comp top | mcd | Molina, Giulia Silveira | Intercore correlation | |
| 5 | Depth, composite, corrected, top | Depth comp corr top | c-mcd | Molina, Giulia Silveira | Intercore correlation | |
| 6 | AGE | Age | ka BP | Molina, Giulia Silveira | Age model according to Lisiecki & Raymo (2005) [LR04] | Geocode |
| 7 | AGE | Age | ka BP | Molina, Giulia Silveira | Age model according to Ahn et al. (2017) [Probstack] | Geocode |
| 8 | Foraminifera, benthic, epifaunal, δ18O | Foram benth epifauna δ18O | ‰ PDB | Voelker, Antje H L | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, MAT 253 Plus; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV | vs. VPDB, raw, uncorrected data |
| 9 | Planulina ariminensis, δ13C | P. ariminensis δ13C | ‰ PDB | Voelker, Antje H L | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, MAT 253 Plus; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV | vs. VPDB, raw, uncorrected data |
| 10 | Cibicides pachyderma, δ13C | C. pachyderma δ13C | ‰ PDB | Voelker, Antje H L | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, MAT 253 Plus; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV | vs. VPDB, raw, uncorrected data |
| 11 | Foraminifera, benthic, epifaunal, δ13C | Foram benth epifauna δ13C | ‰ PDB | Voelker, Antje H L | adjusted | vs. VPDB, C. pachyderma δ13C adjusted by +0.3 |
| 12 | Globobulimina affinis, δ13C | G. affinis δ13C | ‰ PDB | Molina, Giulia Silveira | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, MAT 253 Plus; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV | vs. VPDB, raw, uncorrected data |
| 13 | Globobulimina affinis, δ13C standard error | G. affinis δ13C std e | ± | Molina, Giulia Silveira | ||
| 14 | Globobulimina affinis, δ18O | G. affinis δ18O | ‰ PDB | Molina, Giulia Silveira | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, MAT 253 Plus; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV | vs. VPDB, raw, uncorrected data |
| 15 | Globobulimina affinis, δ18O standard error | G. affinis δ18O std e | ± | Molina, Giulia Silveira | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, MAT 253 Plus; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV | |
| 16 | Globobulimina turgida, δ18O | G. turgida δ18O | ‰ PDB | Molina, Giulia Silveira | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, MAT 253 Plus; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV | vs. VPDB, raw, uncorrected data |
| 17 | Globobulimina turgida, δ13C, standard deviation | G. turgida δ13C std dev | ± | Molina, Giulia Silveira | ||
| 18 | Globobulimina turgida, δ13C | G. turgida δ13C | ‰ PDB | Molina, Giulia Silveira | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, MAT 253 Plus; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV | vs. VPDB, raw, uncorrected data |
| 19 | Globobulimina turgida, δ18O, standard deviation | G. turgida δ18O std dev | ± | Molina, Giulia Silveira | ||
| 20 | Foraminifera, benthic, deep infaunal, δ13C | Foram benth deep infauna δ13C | ‰ PDB | Molina, Giulia Silveira | adjusted | vs. VPDB, G. turgida δ13C adjusted -0.15 |
| 21 | Foraminifera, benthic, deep infaunal, δ18O | Foram benth deep infauna δ18O | ‰ PDB | Molina, Giulia Silveira | adjusted | vs. VPDB, G. turgida δ18O adjusted -0.20 |
| 22 | Δδ13C | Δδ13C | ‰ PDB | Molina, Giulia Silveira | Calculated | vs. VPDB |
| 23 | Oxygen | O2 | µmol/kg | Molina, Giulia Silveira | Calculated according to Hoogakker et al., 2015 | |
| 24 | Oxygen | O2 | µmol/kg | Molina, Giulia Silveira | Calculated according to Hoogakker et al., 2015 | truncated |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
8343 data points
Download Data (login required; moratorium until 2026-10-31)
View dataset as HTML (shows only first 2000 rows)