Aishihik Batholith Tectonic Setting in Southwest Yukon

216 Ma crystallization age suggests the Aishihik Batholith granodiorite formed in the Early Jurassic. The Government of Yukon provides geological analysis suggesting the batholith is allochthonous above a metamorphic terrane, with tectonic modification possibly occurring during Stikinia's collision with North America. Relationships and kinematic indicators are described, though the regional extent of a detachment remains conjectural.

Use Cases

• Analyzing tectonic relationships between batholiths and metamorphic terraces based on contact descriptions lacking intrusive features
• Studying pluton crystallization ages and tectonic timing based on the 216 Ma granodiorite and Middle Jurassic quartz monzonite indicators
• Investigating regional tectonic models for Stikinia's collision with North America based on the batholith's described modification
• Mapping ductile deformation and mylonitization patterns adjacent to batholith contacts

Strengths

• Specific crystallization age of about 216 Ma is provided
• Detailed geological relationships and tectonic hypotheses are described
• Source is the authoritative 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 open_canada

Provenance

Source

Government of Yukon

Time Range

Early Jurassic (crystallization ~216 Ma), with tectonic events possibly into Middle Jurassic

Freshness

Last updated 2026-04-17 15:54:17.818886; freshness should be verified

Geography

Southwest Yukon, specifically the Aishihik Batholith area, adjacent to Stikinia