Molina, Giulia Silveira; Pena, Leopoldo D: Neodymium isotope compositions (εNd) on planktic foraminifera and fish teeth for the Marine Isotope Stage (MIS) 17 to MIS 32 interval of IODP Site 339-U1387, Gulf of Cadiz [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996415 (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 neodymium isotope compositions (εNd) measured on planktic foraminifera and fish teeth 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 measurements were made to identify the water mass bathing the seafloor across Marine Isotope Stages (MIS) 17 to 32, in the Early to Middle Pleistocene. Mixed planktic foraminifera (and fish teeth in two samples) were picked from the >250 µm fraction and cleaned following Barker et al. (2003) and Pena et al. (2005), for 49 samples in total. Neodymium was purified by column chromatography at the Laboratori d'Isòtops Radiogènics i Ambientals (LIRA) and measured on a Nu Instruments Plasma 3 multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS) at the Scientific and Technological Centres of the University of Barcelona (CCiT-UB). Ratios were normalized to the JNdi-1 reference standard (Tanaka et al., 2000) and are expressed as εNd relative to the Chondritic Uniform Reservoir (CHUR). The age model is based on correlation of the planktonic d18O record of Globigerina bulloides from Site U1387 to IODP Site U1385, which is aligned to the LR04 benthic isotope stack (Lisiecki and Raymo, 2005); ages are also given on the Probstack time scale (Ahn et al., 2017). The two fish-teeth analyses fill intervals where planktic foraminifera were too scarce to provide enough neodymium, therefore keeping the record continuous.
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
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
Pena, Leopoldo D; Calvo, Eva; Cacho, Isabel; Eggins, Stephen M; Pelejero, Carles (2005): Identification and removal of Mn‐Mg‐rich contaminant phases on foraminiferal tests: Implications for Mg/Ca past temperature reconstructions. Geochemistry, Geophysics, Geosystems, 6(9), 2005GC000930, https://doi.org/10.1029/2005GC000930
Tanaka, Tsuyoshi; Togashi, Shigeko; Kamioka, Hikari; Amakawa, Hiroshi; Kagami, Hiroo; Hamamoto, Takuji; Yuhara, Masaki; Orihashi, Yuji; Yoneda, Shigekazu; Shimizu, Hiroshi; Kunimaru, Takanori; Takahashi, Kazuya; Yanagi, Takeru; Nakano, Takanori; Fujimaki, Hirokazu; Shinjo, Ryuichi; Asahara, Yoshihiro; Tanimizu, Masaharu; Dragusanu, Cristian (2000): JNdi-1: a neodymium isotopic reference in consistency with LaJolla neodymium. Chemical Geology, 168(3-4), 279-281, https://doi.org/10.1016/S0009-2541(00)00198-4
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: 36.805410 * Median Longitude: -7.718905 * South-bound Latitude: 36.805410 * West-bound Longitude: -7.719013 * North-bound Latitude: 36.805410 * East-bound Longitude: -7.718797
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
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 | ε-Neodymium | ε-Nd | Molina, Giulia Silveira | Multi-collector ICP-MS (MC-ICP-MS), Nu Plasma III | multi-species planktic foraminifera, >250 µm fraction, ~15–20 mg per sample; plus fish teeth, >125 µm fraction (2 samples) | |
| 9 | Uncertainty | Uncertainty | ± | Molina, Giulia Silveira | Uc (k=2) | |
| 10 | Material | Material | Molina, Giulia Silveira |
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:
343 data points