Surficial geology mapping documents high-level terraces along the lower Stewart and Yukon Rivers, formed during Pleistocene glaciations and preglacial time. The dataset likely contains information on terrace composition, age correlations, and placer gold distribution. It was published by the Government of Yukon and last updated on April 17, 2026.
Use Cases
- Model drainage evolution based on terrace height and relationship to glacial limits.
- Identify targets for placer gold exploration based on descriptions of gold grain morphology and distribution.
- Analyze valley aggradation and incision patterns based on inferred base-level changes.
- Study sediment composition and depositional styles based on descriptions of gravelly alluvial fill.
Strengths
- Description provides specific geological context, including terrace composition (bedrock, gravelly alluvial fill) and gold grain size (<1 mm).
- Age determination methods (paleosol development, height, relationship to glacial limits) are explicitly stated.
- Dataset is associated with an authoritative source, the Government of Yukon.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect geographic bias inherent to the specific river valleys studied.
Provenance
- Source
- Government of Yukon
- Collection Method
- Surficial geology mapping, gravel sampling, and heavy mineral concentration.
- Time Range
- Pleistocene glaciations and preglacial time (including possible late Tertiary/Pliocene-Early Pleistocene features).
- Freshness
- Last updated 2026-04-17 15:50:18.018120; freshness should be verified.
- Geography
- Lower Stewart River valley and parts of Yukon River, Yukon, Canada.