Bear Creek Assemblage: Late Triassic Volcanic and Sedimentary Rocks in Yukon

The Bear Creek assemblage comprises metamorphosed siltstone, mudstone, sandstone, and mafic to intermediate volcanic rocks. Preliminary ages suggest it is Late Triassic, approximately 204 million years old. The dataset is published by the Government of Yukon on the open_canada platform.

Use Cases

• Correlating regional stratigraphy based on descriptions of rock types and formations.
• Studying Late Triassic volcanic and sedimentary environments based on the described assemblage.
• Analyzing tectonic boundaries and fault systems based on mentions of the Duke River and Denali faults.
• Investigating terrane linkages between Alexander, Wrangellia, and Taku based on suggested similarities.

Strengths

• Provides a specific preliminary age estimate of approximately 204 million years.
• Includes detailed geological descriptions of rock types and regional structural context.
• Published by an authoritative government source, the Government of Yukon.

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 study area in southwest Yukon.

Provenance

Source

Government of Yukon

Time Range

Late Triassic (approximately 204 million years ago)

Freshness

Last updated 2026-04-17 15:51:06.788827; freshness should be verified.

Geography

Mount Decoeli area, southwest Yukon, Canada