Trace element and Vanadium isotope compositions of basalt glass samples from the Reykjanes Ridge (NERC Grant NE/N009886/1)

The data forms the basis of the paper Novella et al (2020 ( https://doi.org/10.1016/j.epsl.2019.115973) and full interpretation can be found there. Basalt glass chips were supplied by Bramley Murton (Southampton) and the sample contexts are detailed in https://doi.org/10.1093/petrology/43.11.1987. New trace element data is provided for the clean basaltic glasses (all reported in ppm). The Vanadium isotope composition (del51V) is also reported for these chips. Uncertainties in these analyses are provided as 2-sigma. Updated estimates of the ferric iron content of these chips also provided, based on recalibration of the data reported by Shorttle et al 2015 ( https://doi.org/10.1016/j.epsl.2015.07.017).

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Organisation name	Individual name	Electronic mail address	Role
University of Cambridge	Dr John Maclennan	not available	Originator
University of Cambridge	Dr John Maclennan	not available	Principal investigator
British Geological Survey	Enquiries	not available	Distributor
British Geological Survey	Enquiries	not available	Point of contact

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Other constraints: Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

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Geographic identifier: MID-ATLANTIC RIDGE [id=905500]
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OnLine resource

Protocol	Linkage	Name
	https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item171741	Data

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Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Title: 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

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

Statement: TRACE ELEMENTS: Clean glass chips were selected and mounted for Laser-Ablation ICP-MS. Trace and rare earth element (REE) concentrations were measured by laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) at the Department of Earth Sciences, the University of Cambridge. This analytical setup combines a NWR193 excimer laser ablation systems with a Perkin Elmer NexION 350D ICP mass spectrometer. VANADIUM ISOTOPES: Clean glass shards without visible minerals, inclusions or weathering features were hand-picked under an optical microscope and ground in an agate mortar to obtain a homogeneous, fine powder. Dissolved basalts were processed through ion exchange chromatography following the protocol of Nielsen et al. (2011). Vanadium isotopic compositions were measured with a Nu Plasma II multi collector inductively coupled plasma mass spectrometer (Hopkins et al., 2019).