Uranium and Thorium activity data in sediment cores in the North Atlantic Ocean (NERC Grant NE/M004619/1)

Activity (dpm/g) of Uranium and thorium isotopes from 3 sediment cores in the North Atlantic: ODP980, ODP983, EW9302-2JPC. Ocean Drilling Program (ODP) Site 980 was drilled in July 1995 in the North Atlantic Ocean, on the Feni Drift, off the eastern edge of the Rockall Plateau at 55.49°N, 14.70°W. Hole 980A Position: 55°29.087'N, 14°42.134'W. Hole 980B Position: 55°29.094'N, 14°42.137'W. ODP Site 983 was drilled was drilled in July 1995 and 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. Site EW9302-2JPC, an ODP Site Survey in 1993, of Rockall Plateau and East Flank of Reykjanes Ridge from the Flemish Cap in the south- eastern Labrador Sea (Figure 1). EW9302-2JPC Position: 4847.700 N, 4505.090 W, taken at water depth 1251m.

Date (Creation): 2023-02-28

Identifier: http://data.bgs.ac.uk/id/dataHolding/13608046

Originator

University of St Andrews - Andrea Burke

Bute Building, Queen's Terrace , St Andrews , KY16 9TS ,

Distributor

British Geological Survey - Enquiries

Point of contact

British Geological Survey - Enquiries

Maintenance and update frequency: notApplicable notApplicable

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

Sediments
Thorium
NGDC Deposited Data
Uranium

dataCentre

NGDC Deposited Data

Keywords

NERC_DDC

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Other constraints: Either: (i) the dataset is made freely available, e.g. via the Internet, for a restricted category of use (e.g. educational use only); or (ii) the dataset has not been formally approved by BGS for access and use by external clients under licence, but its use may be permitted under alternative formal arrangements; or (iii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted in order to determine the permitted usage of the dataset. Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant use restrictions. This staff member should revert to the IPR Section (ipr@bgs.ac.uk ) for advice, should the position not be clear.

Spatial representation type: vector Vector

Metadata language: EnglishEnglish

Topic category

Geoscientific information

Geographic identifier

NORTH ATLANTIC OCEAN [id=2002262]

Date (Revision): 2010

Begin date: 2015-09-01

End date: 2017-10-31

Unique resource identifier: WGS 84 (EPSG::4326)

Distribution format

MS Excel ()

Distributor

British Geological Survey - Enquiries

OnLine resource: Data

Hierarchy level: dataset Dataset

Other: dataset

Conformance result

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Date (Publication): 2010-12-08

Explanation: See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Pass: No

Statement: Sedimentary uranium (U) and thorium (Th) isotopes were measured using approximately 10 mg of dried and homogenised sediment. The sediment was spiked with a 236U- 229Th mixed spike and then totally digested with a mixed HClO4, HF, HNO3 solution in a 0.5:1:2 ratio. U and Th were separated from the matrix using the anion exchange UTEVA resin in a single column step (Nita, 2012). U and Th isotope ratios were measured using sample-standard bracketing on a Neptune Plus multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) at the St Andrews Isotope Group (STAiG) laboratory, University of St Andrews following the procedure of (Hoffmann et al., 2007). Splice of ODP980 is as published in Crocker et al., 2016