Identification

Data Identification:

citation:

Citation:

Title:

Fe isotope data constraining the evolution of the Galápagos mantle plume (NERC Grant NE/V000411/1)

Date:

CI_Date:

Date Type:

creation

date:

2023-05-25

Identifier:

RS_Identifier:

code:

http://data.bgs.ac.uk/id/dataHolding/13608088

Abstract:

The data consists of Fe-isotope ratio measurements, expressed in permil notation (δ57Fe) relative to the international standard IRMM-014 following standard practise. The measurements are of bulk rock samples and the sample set consisted of a suite of well-characterized basalts and picrites from three periods in the evolution of the Galápagos plume, from the approximately 70- to 90-Ma plume head [Tortugal, Curaçao (Lesser Antilles), and Gorgona Island (Colombia)], 60- to 70-Ma head-tail transitional accreted terranes [Quepos (Costa Rica) and Azuero Peninsula (Panama)], and modern (<2 Ma) steady-state plume. The samples were provided by collaborators Esteban Gazel (Central American samples) and Dennis Geist (Galapagos) in powder form. Original data on the samples can be found in the following references: D. J. Geist, T. R. Naumann, J. J. Standish, M. D. Kurz, K. S. Harpp, W. M. White, D. J. Fornari, Wolf Volcano, Galápagos Archipelago: Melting and magmatic evolution at the margins of a mantle plume. J. Petrol. 46, 2197–2224 (2005). M. D. Kurz, J. Curtice, D. Fornari, D. J. Geist, M. Moreira, Primitive neon from the center of the Galápagos hotspot. Earth Planet. Sci. Lett. 286, 23–34 (2009). J. Trela, E. Gazel, A. V. Sobolev, L. Moore, M. Bizimis, B. Jicha, V. G. Batanova, The hottest lavas of the Phanerozoic and the survival of deep Archaean reservoirs. Nat. Geoscience 10, 451–456 (2017). J. Trela, C. Vidito, E. Gazel, C. Herzberg, C. Class, W. Whalen, B. Jicha, M. Bizimis, G. E. Alvarado, Recycled crust in the Galápagos Plume source at 70 Ma: Implications for plume evolution. Earth Planet. Sci. Lett. 425, 268–277 (2015). Iron separation and isotope measurements were performed at the Department of Earth Sciences, University of Cambridge following established procedures such as those described in the following papers: H. M. Williams, M. Bizimis, Iron isotope tracing of mantle heterogeneity within the source regions of oceanic basalts. Earth Planet. Sci. Lett. 404, 396–407 (2014). C. R. Soderman, S. Matthews, O. Shorttle, M. G. Jackson, S. Ruttor, O. Nebel, S. Turner, C. Beier, M.-A. Millet, E. Widom, M. Humayan, H. M. Williams, Heavy δ57Fe in ocean island basalts: A non-unique signature of processes and source lithologies in the mantle. Geochim. Cosmochim. Acta 292, 309–332 (2021). Measurements were made on a Neptune Plus multicollector inductively coupled plasma mass spectrometer (MC-ICPMS) in wet plasma, with typical 2 SEs on multiple δ57/54Fe measurements of the same sample better than 0.02‰ and measurements of reference materials in agreement with accepted values. Data table S1 gives the measured Fe isotope data, along with a compilation of selected literature major and trace element used in this study. Data table S2 gives the measured Fe isotope data for the geological reference materials used during analytical sessions. Data table S3 gives the range of calculated primary Fe isotope compositions for each locality. For more information see published paper, Caroline R. Soderman et al. ,The evolution of the Galápagos mantle plume. Sci. Adv.9,eadd5030(2023).DOI:10.1126/sciadv.add5030

Point of Contact:

Responsible Party:

Individual Name:

Helen Williams

Organisation Name:

University of Cambridge

Contact Info:

CI_Contact:

Address:

Delivery Point:

Department of Earth Sciences

city:

Cambridge

Postal Code:

CB2 3EQ

e-mail:

not available

role:

originator

Responsible Party:

Individual Name:

Enquiries

Organisation Name:

British Geological Survey

Contact Info:

CI_Contact:

Address:

e-mail:

not available

role:

distributor

Responsible Party:

Individual Name:

Enquiries

Organisation Name:

British Geological Survey

Contact Info:

CI_Contact:

Address:

e-mail:

not available

role:

pointOfContact

Resource Maintenance:

MD_MaintenanceInformation:

maint. / update frequency:

notApplicable

Graphic overview:

Browse Graphic:

File Name:

https://resources.bgs.ac.uk/images/geonetworkThumbs/00d5c3ae-1072-15c2-e063-0937940ad1db.png

Descriptive Keywords:

Keywords:

keyword:

http://www.eionet.europa.eu/gemet/concept?cp=13&langcode=en&ns=5

keyword:

Geology

Thesaurus Name:

Citation:

Title:

GEMET - INSPIRE themes, version 1.0

Date:

CI_Date:

date:

2008-06-01

Date Type:

publication

Keywords:

keyword:

NGDC Deposited Data

Thesaurus Name:

Citation:

Title:

BGS Thesaurus of Geosciences

Date:

CI_Date:

date:

2022

Date Type:

revision

Keywords:

keyword:

NGDC Deposited Data

keyword:

https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html

Type:

dataCentre

Keywords:

keyword:

NERC_DDC

Resource Constraints:

MD_LegalConstraints:

Access Constraints:

otherRestrictions

Other Constraints:

licenceOGL

Other Constraints:

http://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/noLimitations

Other Constraints:

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

MD_LegalConstraints:

Use Constraints:

otherRestrictions

Other Constraints:

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Other Constraints:

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

language:

eng

topicCategory:

geoscientificInformation

Extent:

Temporal Element:

TemporalExtent:

extent:

begin / end:

begin:

2020-05-01

end:

2021-11-01

Distribution

Distribution:

Distribution Format:

Format:

Format Name:

MS Excel

Distributor:

Distributor Contact:

Responsible Party:

Individual Name:

Enquiries

Organisation Name:

British Geological Survey

Contact Info:

CI_Contact:

Address:

e-mail:

not available

role:

distributor

Transfer Options:

Digital Transfer Options:

onLine:

CI_OnlineResource:

linkage:

https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item179942

name:

Data

function:

download

Data Quality

Data Quality:

Scope:

DQ_Scope:

level:

nonGeographicDataset

Level Description:

MD_ScopeDescription:

other:

non geographic dataset

Report:

Domain Consistency:

Result:

Conformance Result:

specification:

Citation:

Title:

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

Date:

CI_Date:

Date Type:

publication

date:

2011

explanation:

See the referenced specification

pass:

Domain Consistency:

Result:

Conformance Result:

specification:

Citation:

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

Date:

CI_Date:

Date Type:

publication

date:

2010-12-08

explanation:

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

pass:

Lineage:

LI_Lineage:

statement:

The samples measured for δ57Fe in this study have been previously characterized for major and trace elements, with some samples also having radiogenic isotope and olivine trace element data. The data sources used are summarized in data S1. The raw δ57Fe data, including results for the standards, are in data S1 and S2. Iron isotope analyses were carried out on dissolutions of 20 mg of whole-rock powders following established procedures in two batches in 2018–2019 and 2021 at the University of Cambridge. Powders were dissolved in a ∼10:1 mixture of HF:HNO3 on a hot plate at 120°C for 48 hours, evaporated to dryness, and redissolved twice in 6 M HCl to remove fluorides. Each dissolution was brought up in 2 ml of 6 M HCl, and 0.5 ml was loaded onto AG1-X4 anion exchange resin, preconditioned with 1 ml of 6 M HCl. Matrix was eluted using 4 ml of 6 M HCl, and then iron was collected with 7 ml of 2 M HCl. A recalibration of the column chemistry in 2021 (after a laboratory shutdown because of coronavirus disease 2019 restrictions) resulted in requiring an extended Fe cut of 8 ml for samples run in 2021 (these samples are marked in data S1). The purified Fe solution was dried, refluxed in HNO3:H2O2, and dissolved in 4 M HNO3 before dilution to 0.1 M HNO3 for isotopic analysis. Sample solutions were analyzed for Fe isotopes on a ThermoNeptune Plus MC-ICPMS at 6 parts per million (ppm) of Fe (2018–2019) or 8 ppm of Fe (2021–2022) in wet plasma and medium resolution mode. Samples were introduced using a quartz cyclonic spray chamber, and instrumental mass bias was corrected for by sample standard bracketing. Sample and standard iron beam intensities (typically 35 to 45 V of 56Fe on a 1010-ohm resistor) were matched to within 5%. Mass dependence, reproducibility, and accuracy were monitored by analysis of an in-house FeCl3 salt standard and international rock standards [Hawaiian Basalt (BHVO-2), Reykjavik Iceland Basalt (BIR-1), and Columbia River Basalt (BCR-2)] processed through column chemistry, giving values in agreement with previous studies. Repeat dissolutions and measurements in 2022 of samples and standards previously run in 2019 were identical, within error (data S1 and S2).

Metadata

File Identifier:

00d5c3ae-1072-15c2-e063-0937940ad1db

language:

eng

Resource type:

nonGeographicDataset

Hierarchy Level Name:

non geographic dataset

Metadata Contact:

Responsible Party:

Organisation Name:

British Geological Survey

Contact Info:

CI_Contact:

phone:

CI_Telephone:

voice:

+44 115 936 3100

Address:

Delivery Point:

Environmental Science Centre,Keyworth

city:

NOTTINGHAM

administrative Area:

NOTTINGHAMSHIRE

Postal Code:

NG12 5GG

country:

United Kingdom

e-mail:

enquiries@bgs.ac.uk

role:

pointOfContact

Date Stamp:

2024-04-24

Metadata Standard Name:

http://vocab.nerc.ac.uk/collection/M25/current/GEMINI/

Metadata Standard Name:

UK GEMINI

Metadata Standard Version:

2.3

Dataset URI:

http://data.bgs.ac.uk/id/dataHolding/13608088