Four new glass-fission-track age determinations on three distal tephra beds constrain the age of upper White Channel Gravel in the Klondike district. Published magnetostratigraphic and 40Ar/39Ar data support a Late Pliocene age range of 2.6-3.3 Ma. The dataset is provided by the Government of Yukon and was last updated in April 2026.
Use Cases
- Calibrate regional geological timelines based on tephra bed age determinations.
- Study Late Pliocene sediment deposition patterns in the Klondike district.
- Validate paleomagnetic and paleobotanical age constraints for gravel units.
- Compare fission-track dating with 40Ar/39Ar dating methods for tephra samples.
Strengths
- Age determinations for three specific distal tephra beds.
- Age range for upper gravel is securely placed at 2.6-3.3 Ma.
- Integrates multiple dating methods: fission-track, magnetostratigraphic, and 40Ar/39Ar.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Age of lower White Channel Gravel is only loosely constrained.
Provenance
- Source
- Government of Yukon
- Collection Method
- Geochronological analysis including glass-fission-track, magnetostratigraphic, and 40Ar/39Ar dating.
- Time Range
- Late Pliocene (2.6-3.3 Ma) for upper gravel; post-Miocene and pre-Late Pliocene for lower gravel.
- Freshness
- Last updated 2026-04-17 15:50:38.908581; freshness should be verified.
- Geography
- Klondike district, Yukon, Canada.