U-Pb Geochemical Data for Magmatic Zircons from County Donegal, Ireland

U-Pb geochemical data for a suite of magmas collected in County Donegal, Ireland in 2023. The data, processed in 2025, aims to identify magmatic and inherited zircon grains from samples including the Fanad, Ardara, main Donegal, Tullagh, and Thorr granites. Raw data files require Iolite software, while processed data includes Excel spreadsheets with isochrons produced using Isoplotr.

Use Cases

• Identify magmatic versus inherited zircon grains based on U-Pb geochemical data.
• Construct geochronological isochrons for granite samples using processed spreadsheet data.
• Analyze trace element profiles of magmatic grains for petrogenetic studies.
• Correlate cathode luminescence imagery with geochemical signatures for zircon characterization.

Strengths

• Data collection is recent, with samples gathered in 2023 and processing completed in 2025.
• Description specifies five distinct granite suites (Fanad, Ardara, main Donegal, Tullagh, Thorr) providing geological context.
• Includes both raw data formats (.xls, .seq, .io) and processed data with isochrons, suggesting a complete analytical workflow.

Limitations

• Row count, column definitions, and sample size are unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download from the .xls files.
• The description notes that trace element profiles, imagery, and a machine learning algorithm will be included 'upon completion', indicating the dataset may be partially incomplete.

Provenance

Source

British Geological Survey (BGS)

Collection Method

Samples collected in Donegal, crushed and separated in Glasgow, prepared in Hull and Glasgow, analyzed by laser ablation in Hull, and processed by Dempsey.

Time Range

Sample collection in 2023, with analysis and processing occurring between 2023 and 2025.

Freshness

Last updated 2026-04-09 08:25:35.285446; freshness should be verified.

Geography

County Donegal, Ireland.