U-Pb Ages and Geochemistry of Plutonic Rocks in Yukon's McQuesten Area

Early Mississippian (341.5–355.7 Ma) and Cretaceous (92.0 Ma) crystallization ages from the Reid Lakes batholith and Moose Creek pluton in south-central Yukon. The dataset likely contains geochemical measurements and U-Pb isotopic data for plutonic rock samples. It was published by the Government of Yukon and last updated on April 17, 2026.

Use Cases

• Correlating plutonic suites based on U-Pb crystallization ages mentioned in the description
• Distinguishing terrane affiliations based on intrusion ages into metamorphic rocks
• Re-evaluating regional geological maps based on revised age assignments for batholiths

Strengths

• Provides precise U-Pb ages with reported uncertainties (e.g., 341.5 ± 0.7 Ma)
• Clarifies the age distinction between two major plutonic bodies (Reid Lakes batholith and Moose Creek pluton)
• Links geological units to specific tectonic terrains (Yukon-Tanana terrane, Ancestral North America)

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 McQuesten map area

Provenance

Source

Government of Yukon

Time Range

Early Mississippian (circa 341–356 Ma) and mid-Cretaceous (circa 92 Ma)

Freshness

Last updated 2026-04-17 15:56:05.797172; freshness should be verified

Geography

South-central McQuesten map area (115P), Yukon, Canada