Citation:

PANGAEA.919846

Name: Stable isotopes of detrital carbonate from sediment core MD01-2444 on the Portuguese Margin, Marine Isotope Stage 3
Published: 2020-07-03
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Heinrich Stadials; Interstadials; MIS 3; Portuguese Margin

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Abstract:

Stable isotopes of detrital carbonate were measured on single grains taken from the peaks of HL4 (10.06 m) and HL5 (11.98 m) in MD01-2444. Detrital carbonate grains were picked from the >150 μm fraction and leached in a weak acid. Each detrital carbonate grain was ground and between 20 and 60 μg of powdered sample was loaded into Exetainer vials and sealed with silicone rubber septa using a screw cap. The samples were flushed with CP grade helium, then acidified with 104% orthophosphoric acid, left to react for 1 hour at 70 degrees Celsius and then analysed using a Thermo Gasbench preparation system attached to a Thermo Delta V mass spectrometer in continuous flow mode. Each run of samples was accompanied by 10 reference carbonates (Carrara Z) and 2 control samples (Fletton Clay). Carrara Z has been calibrated to VPDB using the international standard NBS19. The results are reported with reference to the international standard VPDB and the precision is better than ±0.08 per mil for d13C and ± 0.10 per mil for d18O. The record was generated by D.A. Hodell.

Keyword(s):

Heinrich Stadials; Interstadials; MIS 3; Portuguese Margin

Supplement to:

Margari, Vasiliki; Skinner, Luke C; Menviel, Laurie; Capron, Emilie; Rhodes, Rachael H; Mleneck-Vautravers, Maryline J; Ezat, Mohamed M; Martrat, Belén; Grimalt, Joan O; Hodell, David A; Tzedakis, Polychronis C (2020): Fast and slow components of interstadial warming in the North Atlantic during the last glacial. Communications Earth & Environment, 1(1), https://doi.org/10.1038/s43247-020-0006-x

Further details:

Buizert, Christo; Cuffey, Kurt M; Severinghaus, Jeffrey P; Baggenstos, Daniel; Fudge, Tyler J; Steig, Eric J; Markle, Bradley R; Winstrup, Mai; Rhodes, Rachael H; Brook, Edward J; Sowers, Todd A; Clow, Gary D; Cheng, Hai; Edwards, Ross L; Sigl, Michael; McConnell, Joseph R; Taylor, Kendrick C (2015): The WAIS Divide deep ice core WD2014 chronology - Part 1: Methane synchronization (68–31 ka BP) and the gas age–ice age difference. Climate of the Past, 11(2), 153-173, https://doi.org/10.5194/cp-11-153-2015

Svensson, Anders M; Andersen, Katrine K; Bigler, Matthias; Clausen, Henrik Brink; Dahl-Jensen, Dorthe; Davies, Siwan M; Johnsen, Sigfús Jóhann; Muscheler, Raimund; Parrenin, Frédéric; Rasmussen, Sune Olander; Röthlisberger, Regine; Seierstad, Inger K; Steffensen, Jørgen Peder; Vinther, Bo Møllesøe (2008): A 60 000 year Greenland stratigraphic ice core chronology. Climate of the Past, 4(1), 47-57, https://doi.org/10.5194/cp-4-47-2008

Coverage:

Latitude: 37.565000 * Longitude: -10.134000

Minimum DEPTH, sediment/rock: 10.06 m * Maximum DEPTH, sediment/rock: 11.98 m

Event(s):

MD01-2444 * Latitude: 37.565000 * Longitude: -10.134000 * Elevation: -2656.0 m * Campaign: (GEOSCIENCES, MARMARCORE) * Basis: * Method/Device: Calypso Corer (CALYPSO)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Tzedakis, Polychronis C		Geocode
2	δ13C, carbonate	δ13C carb	‰ PDB	Tzedakis, Polychronis C	Mass spectrometer ThermoFisher Delta V
3	δ18O, carbonate	δ18O carb	‰ PDB	Tzedakis, Polychronis C	Mass spectrometer ThermoFisher Delta V
4	Sediment layer	Sed layer		Tzedakis, Polychronis C

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Size:

78 data points

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