Harzburgite Peak: Bedrock Mapping of a Yukon Ophiolite Complex

A 75 km² massif of spinel harzburgite represents one of the largest mantle tectonite bodies recognized in Yukon. Detailed mapping by the Government of Yukon reveals a coherent sequence of gabbros, sheeted dykes, and harzburgite interpreted as part of a ~100 km strike length ophiolite complex. The dataset was last updated on April 17, 2026.

Use Cases

• Map regional ophiolite complexes based on bedrock sequence descriptions.
• Analyze the extent and preservation of mantle tectonite bodies based on the ~75 km² area.
• Correlate geological terranes based on described similarities with ultramafic bodies in Alaska.
• Study the structural geology of the Wellesley basin based on strike length and klippe interpretation.

Strengths

• The harzburgite tectonite covers a specific, mapped area of ~75 km².
• Field observations are integrated with regional aeromagnetic data.
• The dataset is described as part of a large ophiolite complex with a ~100 km strike length.

Limitations

• No age data are available for the ophiolite.
• 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

Detailed field mapping of bedrock integrated with regional aeromagnetic data.

Freshness

Last updated 2026-04-17 16:04:44.435423; freshness should be verified.

Geography

Northern Wellesley basin adjacent to the Donjek River, southwest Yukon, with correlation to Alaska.