Radiocarbon measurements on foraminifera from sediment cores in the North Atlantic (NERC Grant NE/M004619/1, NE/M003434/1)
Radiocarbon measurements on planktic and benthic foraminifera from sediment cores in the North Atlantic: Ocean Drilling Program (ODP) 983, SU90-44, MD04-2829, MD01-2461, and EW9302-2JPC Site 983 is located on the Bjorn Drift in approximately 1650 m water depth on the eastern flank of the Reykjanes Ridge. Hole 983A Position: 60°24.200'N, 23°38.437'W. Sediment core SU90-44 collected from the north-eastern Atlantic basin, near the top of a small abyssal hill, southeast of the Rockall plateau, 50°01'N, 17°06'W, 4279 m. Sediment core MD04-2829 collected from Rosemary Bank in the Northern Rockall Trough 58º 56.93’ N; 09º 34.30’ W; 1743 m water depth. Sediment core MD01-2461 was collected from the north-western flank of the Porcupine Seabight approximately 550 km to the southwest, 51°45’N, 12°55’W; 1153 m water depth, recovered in 2001. Core EW9302-2JPC recovered from the Rockall Plateau and East Flank of Reykjanes Ridge from the Flemish Cap in the south- eastern Labrador Sea, 48°47.70′N, 45°05.09′W, taken at water depth 1251m.
dataset
:
http://data.bgs.ac.uk/id/dataHolding/13608047
English
Geoscientific information
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NGDC Deposited Data
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NERC_DDC
-45.0800,
48.7900,
-9.5700,
60.4000
creation: 2023-03-01
2015-05-04
-
2020-09-30
vector
University of St Andrews
Andrea Burke
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St Andrews,
KY16 9TS
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British Geological Survey
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British Geological Survey
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Data Quality
Pre-treatment of the foraminifera specimens followed the approach by Nadeau et al. (2001). Sample was transferred into a septum sealed vial. Then 200 microlitre of a 15% hydrogen peroxide (H2O2) solution was added and the tube placed in an ultra-sonic bath for ~3min to remove organic surface contaminants and to provide a mild leach of the foraminifera material. Subsequently, hydrogen peroxide was decanted using a fine syringe and rinsed repeatedly in Milli-Q water. While still damp the samples were evacuated and 1 ml of 85% phosphoric acid was added to hydrolyse the samples to CO2 at 70°C until complete dissolution. Samples were then converted into graphite on a Fe catalyst using the hydrogen reduction method (Vogel et al., 1987) for AMS analysis at the Queens University Belfast AMS facility.
INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
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Metadata about metadata
f6f198b0-b40b-4a51-e053-0937940a7548
British Geological Survey
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2024-04-24