Government of Yukon data describes basalt and rhyolite flows and breccias in the northwestern extension of Selwyn Basin. The volcanic unit is interpreted as overlapping seamounts, with basaltic rocks containing high concentrations of TiO2 (1.7-3.6%), P2O5 (0.5-1.2%), and Zr (140 ppm). The rocks are stratigraphically above Lower Cambrian Hyland Group argillite and beneath Middle Ordovician Road River Group chert.
Use Cases
- Analyze volcanic geochemistry based on reported TiO2, P2O5, and Zr concentrations
- Model tectonic extension and crust thinning based on alkalic basalt composition
- Study stratigraphy and sedimentology based on described relationships with Hyland and Road River Groups
- Investigate potential for stratabound mineralization based on local high barium concentrations
Strengths
- Specific geochemical ranges are provided: TiO2 (1.7-3.6%), P2O5 (0.5-1.2%), Zr (140 ppm)
- Detailed geological context includes stratigraphic position, rock types, and structural features
- Interpretation of volcanic unit as overlapping seamounts provides a conceptual model
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 map-area
Provenance
- Source
- Government of Yukon | Gouvernement du Yukon
- Time Range
- Cambrian to Ordovician geological period
- Freshness
- Last updated 2026-04-17 16:07:55.800122; freshness should be verified
- Geography
- Eastern Dawson Map-Area, Ogilvie Mountains, Yukon, Canada