Yukon Whole Rock and Feldspar Isotope Compilation with 1722 Samples

1722 whole-rock and feldspar samples provide isotopic data for Nd, Hf, Sr, and Pb, compiled from published sources. This database, built from Kirsten Rasmussen's 2013 doctoral thesis, includes about 1200 samples from Yukon and others from British Columbia, Alaska, and Northwest Territories. It is provided in GIS-ready formats for spatial querying and is subject to periodic updates.

Use Cases

• Map isotopic signatures like Pb and Nd across Yukon and neighboring regions using the 1722 sample locations for geological provenance studies.
• Analyze correlations between whole-rock Sr and feldspar Pb isotope ratios to investigate petrogenetic processes in the northern Cordillera.
• Integrate the sample location data into a GIS platform for spatial queries on Hf or O isotopic distributions across the study area.

Strengths

• Contains a substantial collection of 1722 analyzed whole-rock and feldspar samples.
• Spatially focused, with about 1200 samples located specifically within Yukon.
• Provided in multiple GIS-ready formats (shapefile, geodatabase, text) for direct spatial analysis.

Limitations

• The dataset is a compilation from various published sources, which may introduce inconsistencies in measurement methodologies.
• Specific analytical values and column definitions are not provided in the input, limiting immediate understanding of the data structure.
• Geographic coverage is biased towards Yukon, with fewer samples from surrounding regions.

Provenance

Source

Government of Yukon, Yukon Geological Survey, distributed via GeoYukon.

Collection Method

Compilation of published Nd, Hf, Sr, and Pb isotopic data from whole-rock powders and feldspar separates.

Time Range

null

Freshness

Subject to periodic updates; last metadata update was March 2026.

Geography

Primarily Yukon, Canada, with additional samples from British Columbia, Alaska, and Northwest Territories.