Stow, Dorrik A V; Smillie, Zeinab; Wilkin, Jonathan; Pan, Jiawei; Esegbue, Onoriode; Bahr, André; Ducassou, Emmanuelle: Isotope analysis from IODP Core 339-U1389A-25X [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.937305 (dataset in review), In: Stow, DAV et al.: Sediment and geochemistry of bi-gradational contourite sequences from the Gulf of Cadiz [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.937307 (dataset in review)
Abstract:
A further 48 samples were analysed for their organic carbon (TOC), CaCO~3~ and stable isotopic contents, using Elemental Analyser - Isotope Ratio Mass Spectrometry (EA-IRMS). These analyses were carried out at the Iso-Analytical labs, Wales. Nine samples received duplicate analysis, one sample was duplicated every 5 runs, indicating possible analytical error within <0.2%o for the δ13Ccarb and <0.15%o for both the δ13Corg and δ18O. Carbonate contents were extracted through acidification of the sample with 2M hydrochloric acid, drying and weighing the sample to calculate the weight loss. Total ion beam data was used to determine the carbon percent of the acid washed samples. The weight loss data recorded at the acid washing stage was used to calculate the TOC% values from the carbon percentages.
The reference material used during δ 13Corg analysis were IA-R001 (δ13CV-PDB = -26.43 ‰), IA-R001, IA-R005 (δ13CV-PDB = -26.03 ‰) and IA-R006 (δ13CV-PDB = -11.64 ‰). Meanwhile, reference standards used for the carbonate isotopes were: IA-R022 (δ13CV-PDB = -28.63 ‰ and δ18OV-PDB = -22.69 ‰), NBS-18 (δ13CV-PDB = -5.01 ‰ and δ18OV-PDB = -23.20 ‰), IA-R066 (δ13CV-PDB = +2.33 ‰ and δ18OV-PDB = -1.52 ‰), IAEA-603 (δ13CV-PDB = +2.46 ‰ and δ18OV-PDB = -2.37 ‰) and IA-R040 (δ13CV-PDB = -0.72 ‰ and δ18OV-PDB = -17.08 ‰).
Related to:
Stow, Dorrik A V; Smillie, Zeinab; Wilkin, Jonathan; Pan, Jiawei; Esegbue, Onoriode; Bahr, André; Ducassou, Emmanuelle (2023): Anatomy of the bi-gradational contourite sequence: Case study from the Gulf of Cadiz. Marine Geology, 458, 107026, https://doi.org/10.1016/j.margeo.2023.107026
Further details:
IODP Expedition 339 Scientists (2012): Environmental significance of the Mediterranean Outflow Water and its global implications. IODP Preliminary Report, Integrated Ocean Drilling Program, https://doi.org/10.2204/iodp.pr.339.2012
Coverage:
Latitude: 36.425305 * Longitude: -7.278178
Minimum DEPTH, sediment/rock: 220.05 m * Maximum DEPTH, sediment/rock: 224.42 m
Event(s):
339-U1389A * Latitude: 36.425305 * Longitude: -7.278178 * Elevation: -644.7 m * Recovery: 335.6 m * Campaign: Exp339 (Mediterranean Outflow) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 39 cores; 354.9 m cored; 95 % recovered; 354.9 m penetrated
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Smillie, Zeinab | DSDP/ODP/IODP sample designation | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Smillie, Zeinab | Geocode – Top (mbsf) | |
| 3 | Carbon, organic, total | TOC | % | Smillie, Zeinab | see description in data abstract | |
| 4 | δ13C, organic carbon | δ13C Corg | ‰ PDB | Smillie, Zeinab | see description in data abstract | |
| 5 | Calcium carbonate | CaCO3 | % | Smillie, Zeinab | see description in data abstract | |
| 6 | δ13C, inorganic carbon | δ13C C inorg | ‰ PDB | Smillie, Zeinab | see description in data abstract | |
| 7 | δ18O | δ18O | ‰ | Smillie, Zeinab | see description in data abstract |
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:
156 data points