BGS Hosted Metadata
Trace element and boron isotopic composition of Drake Passage deep-sea corals
Changes of circulation pattern in the Southern Ocean have been invoked to explain a significant portion of the increase in the atmospheric carbon dioxide during the last deglaciation. However, the accurate timing and thus underlying mechanisms of these changes are still controversial, requiring knowledge of different water masses movements with absolute age constraints. Aragonitic scleractinian deep-sea corals, recovered from a broad range of depths in the Drake Passage, provide a unique opportunity to investigate Southern Ocean ventilation with precise U-Th age control. This data submission includes trace element and delta11B for Drake Passage corals.
Funding was provided by the NERC standard grant NE/N003861/1.
Simple
- Date (Creation)
- 2019-07-31
- Date (Revision)
- 2019-07-31
- Date (Publication)
- 2019-07-31
- Date (released)
- 2019-07-31
- Edition
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1.0
- Unique resource identifier
- https://doi.org/10.5285/ee141bb8-ecc2-4305-9978-05fe9521f10a
- Codespace
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doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01214
- Codespace
- Unique resource identifier
- NE/N003861/1
- Codespace
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award
- Other citation details
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Please cite this item as: Stewart, J., Rae, J., Spooner, P., Robinson, L., Littley, E., & Cole, C. (2020). Trace element and boron isotopic composition of Drake Passage deep-sea corals (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/ee141bb8-ecc2-4305-9978-05fe9521f10a
- Credit
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No credit.
- Status
- Completed
- Point of contact
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Organisation name Individual name Electronic mail address Role University of Bristol
Stewart, Joseph Author University of St Andrews
Rae, James Author University College London
Spooner, Peter Author University of Bristol
Robinson, Laura Author University of St Andrews
Littley, Eloise Author University of St Andrews
Cole, Cathy Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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Drake Passage
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Southern Ocean
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boron isotopes
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deep-sea coral
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trace element
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- Place
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Drake Passage Southern Ocean
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GEMET - INSPIRE themes, version 1.0
- Access constraints
- Other restrictions
- Other constraints
- no limitations to public access
- Access constraints
- Other restrictions
- Other constraints
- no limitations
- Use constraints
- License
- Other constraints
- Open Government Licence v3.0
- Use constraints
- Other restrictions
- Other constraints
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This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/
- Use constraints
- Other restrictions
- Other constraints
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This data is governed by the NERC data policy and supplied under Open Government Licence v.3
- Use constraints
- Other restrictions
- Other constraints
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No restrictions apply.
- Unique resource identifier
- url
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- Association Type
- Cross reference
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- Cross reference
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doi
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- Cross reference
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Biota
- Oceans
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- Begin date
- 2008-01-01
- End date
- 2011-12-31
- Supplemental Information
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It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.
- Title
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European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
- Date (Publication)
- 2008-11-12
- Cited responsible party
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Organisation name Individual name Electronic mail address Role European Petroleum Survey Group
Publisher
- Unique resource identifier
- urn:ogc:def:crs:EPSG::3031
- Version
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6.18.3
Distributor
- Distributor contact
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Distributor
- Distributor format
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Name Version text/csv application/pdf
- Units of distribution
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bytes
- Transfer size
- 114688
- OnLine resource
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Protocol Linkage Name WWW:LINK-1.0-http--link
https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=ee141bb8-ecc2-4305-9978-05fe9521f10a Get Data
- Units of distribution
-
bytes
- Transfer size
- 114688
- OnLine resource
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Protocol Linkage Name WWW:LINK-1.0-http--link
https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=ee141bb8-ecc2-4305-9978-05fe9521f10a Get Data
- Hierarchy level
- Dataset
- Statement
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Methodology:
Whole septa and attached theca were taken from cup corals samples using a rotary cutting tool. This tool was further used to remove surficial oxide coatings and any chalky white altered carbonate. Microstructures within cold-water corals are known to exhibit highly contrasting delta11B, therefore where sufficient sample material allowed, multiple sub-samples (typically duplicates) were measured to assess microstructural bias. Coral fragments were finely crushed using a pestle and mortar before a 2 to 4 mg aliquot of the homogenous powder was taken. A warm 1% H2O2 (buffered in NH4OH) oxidative clean and weak acid polish (0.0005 M HNO3) was performed on powders. Samples were then dissolved in distilled 0.5 M HNO3.
All analyses were carried out at the Univ. of Bristol and Univ. of St Andrews. An aliquot of the dissolved sample was analyzed by ICP-MS using well-characterised, matrix-matched, synthetic standard solutions to yield trace metal ratios to calcium. Repeat analysis of NIST RM 8301c (n=35) yielded analytical precision of <±2% for Li/Ca, B/Ca, Na/Ca, Mg/Ca, Sr/Ca, Cd/Ca, Ba/Ca, and U/Ca ratios; <±5% for Al/Ca, Mn/Ca, Ni/Ca, Nd/Ca, and W/Ca ratios; ±10% for Cu/Ca; ±16% for Fe/Ca and Zn/Ca; and >±25% for Sn/Ca and Pb/Ca.
A further aliquot of the dissolved sample containing ~65 ng B was separated from the carbonate matrix using 20 microliter micro-columns containing Amberlite IRA 743 boron-specific anionic exchange resin. The delta11B of purified boron samples were measured by (MC)-ICPMS against NIST SRM 951 at St Andrews and Bristol following identical protocols (Foster, 2008; Foster et al., 2013; Rae et al., 2011). Published and ongoing interlaboratory comparison studies reveal no systematic analytical offset between these institutions (Foster et al., 2013). Samples, blanks, and standards were introduced to the instrument in a 0.5 M HNO3 and 0.3 M HF acid matrix to aim B wash out (Misra et al., 2014; Rae et al., 2018). Full procedural uncertainty is assessed using repeat measurement of NIST 8301c consistency standard yielding average delta11B values of 24.19 ± 0.22per mille at Bristol (n=14) and 24.12 ± 0.12per mille at St Andrews (n=15). Total procedural blanks (n=21) were on average <0.25% of the sample boron loaded onto columns.
References:
Foster, G. L. (2008). Seawater pH, pCO2 and [CO^2-3] variations in the Caribbean Sea over the last 130 kyr: A boron isotope and B/Ca study of planktic foraminifera. Earth and Planetary Science Letters, 271(1-4), 254-266. DOI: 10.1016/j.epsl.2008.04.015
Foster, G. L., Hönisch, B., Paris, G., Dwyer, G. S., Rae, J. W. B., Elliott, T., ... Vengosh, A. (2013). Interlaboratory comparison of boron isotope analyses of boric acid, seawater and marine CaCO3 by MC-ICPMS and NTIMS. Chemical Geology, 358, 1-14. DOI: 10.1016/j.chemgeo.2013.08.027
Rae, JWB, Foster, GL, Schmidt, DN & Elliott, T 2011, 'Boron isotopes and B/Ca ratios in benthic foraminifera: proxies for the deep ocean carbonate system' Earth and Planetary Science Letters, vol. 302, no. 3-4, pp. 403-413. https://doi.org/10.1016/j.epsl.2010.12.034
Misra, S., Owen, R., Kerr, J. & Greaves, M. Determination of delta11B by HR-ICP-MS from mass limited samples: application to natural carbonates and water samples. Geochim. Cosmochim. Acta 140, 531-552 (2014).
Rae JWB, Burke A, Robinson LF, Adkins AJ, Chen T, Cole C, Greenop R, Li T,E. Littley E, Nita DC (2018) CO2 storage and release in the deep Southern Ocean on millennial to centennial timescales Nature 562 (7728), p.569
Data collection:
Multi-Collector Inductively Coupled Plasma Mass Spectrometry (MC-ICPMS, Thermo Neptune and Neptune Plus)
Single Collector Mass Spectrometer (ICPMS, Thermo Element2; Agilent 7500)
Data quality:
Limits of detection for trace metal analyses by ICP-MS were calculated for each analytical batch using the average blank (in counts per second) plus 5 standard deviation of the blank. Sample results that returned below this threshold within each run are quoted as '<LOD'.
Metadata
- File identifier
- ee141bb8-ecc2-4305-9978-05fe9521f10a XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
dataset
- Date stamp
- 2019-07-31
- Metadata standard name
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ISO 19115 Geographic Information - Metadata
- Metadata standard version
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ISO 19115:2003(E)
- Metadata author
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Point of contact
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