Martínez-Braceras, Naroa; Payros, Aitor; Dinarès-Turell, Jaume; Rosales, Idoia; Arostegi, Javier; Silva-Casal, Roi (2024): Organic geochemistry of the lower Pliensbachian Santiurde section (Basque-Cantabrian basin, northern Spain) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.967947
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Published: 2024-06-03 • DOI registered: 2024-07-02
Abstract:
We present organic geochemistry from the lowermost Pliensbachian organic-rich hemipelagic Santiurde section (Basque-Cantabrian basin, north Iberian palaeomargin, Spain). The Santiurde section studied herein is exposed at exit 144 of motorway A67 (UTM X411431.091 Y4769002.593), approximately 50 km south-west of Santander city. The expanded hemiplegic succession offered a potentially valuable orbitally paced stratigraphic record. An integrated multiproxy study was performed in the 19 beds found between 12.4 and 15.95 m of the lower Pliensbachian succession in order to disentangle what sedimentary processes and environmental factors influenced the formation of the hemipelagic rhytmites. Sampling was mainly carried out in 2019. One sample from the central part of each bed was studied for their mineralogical content, their organic geochemistry, and their elemental composition. Organic carbon and organic nitrogen contents, as well as their isotopic d13Corg and d15Norg values were obtained by combustion of powdered and decarbonated samples in an elemental analyzer Flash EA 1112 (ThermoFinnigan) connected to a DeltaV Advantage mass spectrometer (Thermo Scientific) at the University of A Coruña, Spain.
Keyword(s):
Funding:
Agencia Estatal de Investigación (AEI), grant/award no. MARSA22/05: Margarita Salas post-doctoral grant of the Spanish Government with Next Generation funds from the European Union
Agencia Estatal de Investigación (AEI), grant/award no. PID2019-105670GB-I00: Spanish Government (MCIN/AEI)
University of the Basque Country (UPV/EHU), grant/award no. DOCREC19/35: Post-doctoral grant from the University of the Basque Country
University of the Basque Country (UPV/EHU), grant/award no. ESPDOC21/49: Post-doctoral grant from the University of the Basque Country
Coverage:
Latitude: 43.068561 * Longitude: -4.087829
Date/Time Start: 2019-04-22T00:00:00 * Date/Time End: 2019-04-22T00:00:00
Minimum Elevation: 730.0 m * Maximum Elevation: 730.0 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample ID | Sample ID | Martínez-Braceras, Naroa | |||
| 2 | Sample code/label | Sample label | Martínez-Braceras, Naroa | Bed label | ||
| 3 | Stratigraphic height | Strat height | m | Martínez-Braceras, Naroa | ||
| 4 | Nitrogen, organic | N org | % | Martínez-Braceras, Naroa | Elemental analyzer Flash EA 1112, ThermoFinnigan; coupled with DeltaV Advantage mass spectrometer, Thermo Scientific | |
| 5 | δ15N, total nitrogen | δ15N TN | ‰ air | Martínez-Braceras, Naroa | Elemental analyzer Flash EA 1112, ThermoFinnigan; coupled with DeltaV Advantage mass spectrometer, Thermo Scientific | |
| 6 | Carbon, organic | C org | % | Martínez-Braceras, Naroa | Elemental analyzer Flash EA 1112, ThermoFinnigan; coupled with DeltaV Advantage mass spectrometer, Thermo Scientific | |
| 7 | δ13C, organic carbon | δ13C Corg | ‰ PDB | Martínez-Braceras, Naroa | Elemental analyzer Flash EA 1112, ThermoFinnigan; coupled with DeltaV Advantage mass spectrometer, Thermo Scientific |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
133 data points