Yukon Stream Sediment Geochemical Data Across Three Analytical Methods

Regional stream sediment geochemical data compilation comprises over 30,000 samples collected across Yukon. The data, updated from a 2003 compilation, includes results from the reanalysis of more than 24,000 samples using inductively coupled plasma mass spectrometry (ICPMS). Collection occurred from 1976 to 2006, with data organized into six feature classes by analytical method.

Use Cases

• Compare elemental concentrations from ICPMS, INAA, and AAS analyses to assess method-specific detection limits and accuracy.
• Analyze sample location accuracy improvements across the RGS_HEON and updated feature classes for spatial modeling.
• Identify commodity and pathfinder elements like Au, As, Sb, and W using INAA data for mineral exploration targeting.
• Model geochemical baselines using the RGS_All feature class which consolidates AAS, INAA, and ICPMS data.

Strengths

• Over 30,000 geochemical samples provide substantial spatial coverage for analysis.
• Includes reanalysis of more than 24,000 samples via ICPMS, offering upgraded detection limits and a broader element range.
• Data spans a 30-year collection period from 1976 to 2006, enabling temporal trend assessment.
• Organized into six distinct feature classes (e.g., RGS_SITE_WATER, RGS_ICPMS) for method-specific querying.

Limitations

• AAS method data cannot provide accurate determinations for REE, Ta, Nb, As, Sb, Sn, Hg, Cr, or Au due to partial digestion.
• Most AAS data are superseded by INAA and ICPMS data, limiting its standalone utility.
• Sample collection ended in 2006, making the data temporally stale for current environmental baselines.

Provenance

Source

Government of Yukon

Collection Method

Stream sediment samples collected and analyzed using AAS, instrumental neutron activation analysis (INAA), and inductively coupled plasma mass spectrometry (ICPMS).

Time Range

1976 to 2006

Freshness

null

Geography

Yukon, Canada