BGS Hosted Metadata
Granite geochronology data from South Georgia
This dataset comprises U-Pb zircon geochronology data from six rock samples from the sub-Antarctic Island of South Georgia. The data were collected in the interval November 2023 to March 2024 at the University College London. The U-Pb analyses were conducted on six granitoid samples from across South Georgia to examine the age of magmatism and how they correlate with magmatism from the northern Antarctic Peninsula and southern South America.
This project was funded by NERC National Capability funding to the British Antarctic Survey's Paleo Environments, Ice Sheets and Climate Change team.
Simple
- Date (Creation)
- 2025-11-04
- Date (Revision)
- 2025-11-04
- Date (Publication)
- 2025-11-04
- Date (released)
- 2025-11-04
- Edition
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1.0
- Unique resource identifier
- https://doi.org/10.5285/aeac83d8-b368-4152-9083-5956b84e348e
- Codespace
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doi
- Unique resource identifier
- GB/NERC/BAS/PDC/02110
- Codespace
- Other citation details
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Please cite this item as: Riley, T. (2025). Granite geochronology data from South Georgia (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/aeac83d8-b368-4152-9083-5956b84e348e
- Credit
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No credit.
- Status
- Completed
- Point of contact
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Organisation name Individual name Electronic mail address Role British Antarctic Survey Riley, Teal
Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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U-Pb
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geochronology
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zircon
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- Place
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South Georgia Island
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GEMET - INSPIRE themes, version 1.0
- Access constraints
- Other restrictions
- Other constraints
- no limitations to public access
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- 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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and supplied under Open Government Licence v.3 ().
- Unique resource identifier
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url
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- Cross reference
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doi
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url
- Association Type
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url
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- dependency
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url
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doi
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url
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- dependency
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Geoscientific information
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- Begin date
- 2023-11-01
- End date
- 2024-03-31
- 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
- Units of distribution
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bytes
- Transfer size
- 1
- OnLine resource
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Protocol Linkage Name WWW:LINK-1.0-http--link
http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=aeac83d8-b368-4152-9083-5956b84e348e Get Data
- Hierarchy level
- Dataset
- Statement
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Methodology:
Analytical methods:
Zircon U-Pb geochronology
University College London
Zircon U-Pb geochronology used laser ablation inductively coupled mass spectrometry (LA-ICP-MS)
facilities (Agilent 7700 coupled to a New Wave Research 193 nm excimer laser) at the London Geochronology Centre based in University College London. Heavy minerals were separated from bulk sediment samples using standard density liquid and magnetic separation procedures. Zircon-enriched extracts were mounted in hard epoxy resin on glass slides and polished for analysis. Typical laser spot sizes of 25 micrometers were used with a 7-10 Hz repetition rate and a fluence of 2.5 J/cm2. Background measurement before ablation lasted 15 seconds and laser ablation dwell time was 25 seconds. The external zircon standard was Plesovice, which has a TIMS reference age 337.13 +/- 0.37 Ma (Slama et al., 2008). Standard errors on isotope ratios and ages include the standard deviation of 206Pb/238U ages of the Plesovice standard zircon. Time-resolved signals that record isotopic ratios with depth in each crystal were processed using GLITTER 4.5, data reduction software, developed by the ARC National Key Centre for Geochemical Evolution and Metallogeny of Continents (GEMOC) at Macquarie University and CSIRO Exploration and Mining. Processing enabled filtering to remove spurious signals owing to overgrowth boundaries, weathering, inclusions, or fractures.
Data collection:
Data was processed using Isoplot 3.75-4.15 software (Ludwig 2012), IsoplotR (Vermeesch 2018) and GLITTER 4.5
Data quality:
U-Pb ages were calculated using the 206Pb/238U ratios for samples dated as <1.1 Ga, and the 207Pb/206Pb ratios was used for older grains. Discordance was determined using (207Pb/235U - 206Pb/238U) / 206Pb/238U) and similar for 207Pb/206Pb ages.
Metadata
- File identifier
- aeac83d8-b368-4152-9083-5956b84e348e XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
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dataset
- Date stamp
- 2025-11-04
- 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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