Cretaceous Intrusion Geochemistry and Geochronology in Yukon and NWT

A preliminary report presents geochronology and geochemistry data for Cretaceous intrusions in southeastern Yukon and southwestern Northwest Territories. It includes five new U-Pb zircon ages identifying three distinct intrusion ages (~91 Ma, ~96 Ma, ~106 Ma) correlated with established plutonic suites. The data was published by the Government of Yukon on April 17, 2026.

Use Cases

• Correlating intrusion ages with established plutonic suites based on U-Pb zircon dates
• Analyzing intrusion composition for genetic models based on described lithogeochemical discriminant plots
• Identifying potential mineralization targets based on described intrusion-related deposit types

Strengths

• Five new U-Pb zircon ages provide specific temporal constraints (~91 Ma, ~96 Ma, ~106 Ma)
• Intrusions are compositionally described (monzogranite to granodiorite, peraluminous to metaluminous)
• Data correlates intrusions with three established plutonic suites (Tombstone, Tay River, Anvil)

Limitations

• Row count is unknown, which may limit suitability assessment
• Column-level documentation is absent; field semantics must be inferred after download

Provenance

Source

Government of Yukon

Collection Method

Research project investigating the southeastern extension of plutonic suites.

Time Range

Cretaceous period (specific ages ~106-91 Ma)

Freshness

Last updated 2026-04-17 16:00:51.179297; freshness should be verified

Geography

Southeastern Yukon and southwestern Northwest Territories, Canada