Isotopic Age Determinations for Rock Units

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Published by the Ministry of Energy, Mines and Low Carbon Innovation - BC Geological Survey
Licensed under Access Only

BCAge database contains all reported non-proprietary isotopic age determinations for bedrock units from British Columbia, Alberta, Washington and Alaska. The database contains 7759 age determinations from 4828 rock samples, summarizing 622 published articles, theses or unpublished reports. The data is fully relational, and may be queried by the user on the basis absolute age (in Ma), location (NTS mapsheet, terrane polygon, or decimal lat-long, as specified by the user) or source (e.g. author, journal title, etc.). This data has also been integrated into MapPlace and is available as an MS Access database in BCGS Open File 2004-03. This 2004 compilation is also available in a flat tabular format for ease of use.

A 2020 publication (BCGS GeoFile 2020-10) add 532 ages from 66 papers and reports from the BC Geological Survey, Geoscience BC, and external publications. The ages were determined using ten mineral-isotopic systems and six dating methods, predominantly U-Pb zircon. This release contains two CSV files and one Microsoft Access file. The CSV files, one for new data (new_age_2020.csv) the other for BCAge data (bc_age_2020.csv), were generated with simplicity, exchangeability, and GIS-readiness in mind. They contain sample location coordinates, age, and numerous other primary attributes. The Microsoft Access database file, which is available through the GF2020-10 publication link, includes entities, and relationships, and metadata.

Data and Resources

Dataset Extent

Latitude: 48.0° to 60.0°
Longitude: -139.5° to -113.5°

Additional Information


To provide researchers with information on isotopic ages of rock units within, and near, British Columbia.

Lineage Statement

This compilation is from Breitsprecher, K. and Mortensen, J.K., 2004. BCAge 2004A-1 - a database of isotopic age determinations for rock units from British Columbia. British Columbia Ministry of Energy and Mines, Geological Survey, Open File 2004-3 (Release 2.0). The 2020 compilation is: Han, T., Ootes, L., and Yun, K. 2020. The new British Columbia Geological Survey geochronologic database: Preliminary release of ages. British Columbia Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological Survey GeoFile 2020-10.

More Information

Contact Information

NameLarry Jones (pointOfContact)
OrganizationMinistry of Energy, Mines and Low Carbon Innovation
Sub-OrganizationBC Geological Survey
NameYao Cui (businessExpert)
OrganizationMinistry of Energy, Mines and Low Carbon Innovation
Sub-OrganizationBC Geological Survey

Access & Security

Who can view this dataset? Public
Who can download this dataset?Public

Metadata Information

Record Published 2014-12-15
Record Last Modified 2021-04-16
Resource Status completed