Northern Whitehorse Map Area Geology: Stratigraphy and Mineral Occurrences

Results from geological mapping of four 1:50,000 map areas north of Whitehorse are presented. The bulletin establishes stratigraphic nomenclature and describes 16 units of layered rocks, portions of adjacent terranes, and provides biostratigraphic and isotopic age constraints. It is published by the Government of Yukon.

Use Cases

• Stratigraphic analysis based on descriptions of 16 layered rock units
• Tectonic history reconstruction based on episodic depositional history characteristic of an island arc environment
• Mineral deposit potential mapping based on identified regions of favourable geology for copper-gold skarns and gold-quartz veins
• Plutonic suite classification based on five defined suites recording Early Jurassic, mid-Cretaceous and Early Tertiary magmatic epochs
• Biostratigraphic correlation based on ammonite zones and mixed Tethyan-Boreal faunal assemblages

Strengths

• Describes 16 distinct units of layered rocks
• Provides biostratigraphic and isotopic age constraints for almost all units
• Defines five plutonic suites based on isotopic dates
• Identifies regions of favourable geology for several types of mineral deposits

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 areas

Provenance

Source

Government of Yukon

Collection Method

Geological mapping

Freshness

Last updated 2026-04-17 15:48:40.568434; freshness should be verified

Geography

Northern Whitehorse Map Area (NTS 105D/13-16), Southern Yukon Territory