Geology of Spencer Creek and Daughney Lake Map Areas, Southeastern Yukon

A geological map dataset covering the Spencer Creek (105B/1) and Daughney Lake (105B/2) map areas in the Rancheria District of southeastern Yukon. Twelve lithostratigraphic units, ranging from Cambrian to Quaternary in age, are recognized and subdivided into 27 subunits. The dataset describes three phases of geological structures and details precious and base metal mineralization, including dominant sulphides and gangue minerals.

Use Cases

• Identify lithostratigraphic units and subunits based on the described 12 units and 27 subunits.
• Analyze structural controls on mineralization based on the described northeast-southwest jointing and lithological contacts.
• Locate potential mineralization sites using iron and manganese gossans as an exploration guide mentioned in the description.
• Study the tectonic history of the area based on the three phases of structures attributed to arc-continent collision and fault movements.

Strengths

• Detailed lithostratigraphic framework with 12 units and 27 subunits.
• Includes structural analysis of three distinct phases of deformation.
• Specific mineralogical data listing dominant sulphides like galena, sphalerite, pyrite, and chalcopyrite.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Freshness should be verified; last updated metadata indicates a future date (2026-04-17).

Provenance

Source

Government of Yukon

Time Range

Cambrian to Quaternary

Freshness

Last updated 2026-04-17 16:07:23.274935

Geography

Spencer Creek (105B/1) and Daughney Lake (105B/2) Map Areas, Rancheria District, Southeastern Yukon