Three samples of the Nordenskiold formation yielded concordant U-Pb zircon ages of 188.1 ± 0.4 Ma, 187.2 ± 0.4 Ma and 186.5 ± 0.3 Ma, indicating multiple eruptive events. This dataset reports results from regional mapping of the northern Whitehorse trough in Yukon, conducted by the Government of Yukon. It includes ages for volcaniclastic units and intrusive rocks, with a Cretaceous granite sample dated at 112.8 ± 0.2 Ma.
Use Cases
- Calibrating stratigraphic timelines based on precise zircon ages.
- Analyzing volcanic eruptive events based on multiple dated samples.
- Correlating geological formations based on ash tuff age confirmation.
- Studying Cretaceous intrusive activity based on granite and dyke ages.
Strengths
- Includes precise concordant U-Pb zircon ages with reported uncertainties (e.g., 188.1 ± 0.4 Ma).
- Results clearly indicate multiple eruptive events rather than material recycling.
- Data confirms correlation between formations with a concordant age of 187.1 ± 0.7 Ma.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- Government of Yukon
- Collection Method
- Samples collected during regional mapping of the northern Whitehorse trough.
- Freshness
- Last updated 2026-04-17 16:11:54.103913; freshness should be verified.
- Geography
- Whitehorse trough, Yukon