Date (Creation)

2025-04-10

Date (Revision)

2025-04-10

Date (Publication)

2025-04-10

Date (released)

2025-04-10

Edition

1.0

Unique resource identifier

https://doi.org/10.5285/8f999423-ff40-4181-bdf3-964a7e145772

Codespace

doi

Unique resource identifier

GB/NERC/BAS/PDC/02044

Codespace

https://data.bas.ac.uk/

Unique resource identifier

NE/S006710/1

Codespace

award

Other citation details

Please cite this item as: Riley, T., Carter, A., & Johnson, J. S. (2025). Geochronological data from the Hudson Mountains, Antarctica (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/8f999423-ff40-4181-bdf3-964a7e145772

Credit

No credit.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey	Riley, Teal		Author
University College London	Carter, Andrew		Author
British Antarctic Survey	Johnson, Joanne		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency

As needed

Maintenance note

Completed

Global Change Master Directory (GCMD) Science Keywords

• EARTH SCIENCE > Land Surface > Geomorphology > Glacial Landforms/Processes

Theme

• Geochemistry

• Geochronology

• Provenance

• Zircon

Place

• Evans Knoll, Hudson Mountains Antarctica

• Winkie Nunatak, Hudson Mountains Antarctica

• Shepherd Dome, Hudson Mountains Antarctica

• Inman Nunatak, Hudson Mountains Antarctica

• Meyers Nunatak, Hudson Mountains Antarctica

• St Manthe, Hudson Mountains Antarctica

• Wold Nunatak, Hudson Mountains Antarctica

• Siren Rock, Hudson Mountains Antarctica

• Slusher Nunatak, Hudson Mountains Antarctica

GEMET - INSPIRE themes, version 1.0

• Land cover

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

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

and supplied under Open Government Licence v.3 ().

Use constraints

Other restrictions

Other constraints

No restrictions apply.

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Spatial representation type

Text, table

Language

English

Character set

UTF8

Topic category

• Geoscientific information

Begin date

2024-11-01

End date

2024-11-30

Supplemental Information

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

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication)

2008-11-12

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	Publisher

Unique resource identifier

urn:ogc:def:crs:EPSG::3031

Version

6.18.3

Hierarchy level

Dataset

Statement

Methodology:

Geological fieldwork was carried out in the Hudson Mountains during the 2005/6 and 2019/20 Antarctic summers. The crystallization age of 10 samples from these expeditions were analysed using zircon U-Pb geochronology.

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 µm 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 (Sláma 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 software by Ludwig (2012) and Vermeesch (2018)

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

8f999423-ff40-4181-bdf3-964a7e145772 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2025-04-10

Metadata standard name

ISO 19115 Geographic Information - Metadata

Metadata standard version

ISO 19115:2003(E)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact