Upper Hyland River Stratigraphy and Structural Geology Map

A new 1:50,000-scale geological map of the upper Hyland River area in southeast Yukon divides the previously undivided Yusezyu Formation into ten stratigraphic subdivisions. The map characterizes the area's southwest-vergent fold and thrust belt, central upright folds, and a highly deformed region with tight-isoclinal folding, accompanied by amphibolite facies metamorphism. The dataset is provided by the Government of Yukon and was last updated on April 17, 2026.

Use Cases

• Subdividing stratigraphic formations based on identified marker horizons like marble/limestone layers and quartz granule-pebble conglomerate.
• Analyzing regional structural geology based on described southwest-vergent fold and thrust belts, upright folds, and tight-isoclinal folding.
• Studying metamorphic conditions based on the described amphibolite facies, low-pressure metamorphism.
• Mapping fault systems based on the described steeply-dipping fault coincident with the upper Hyland River valley.

Strengths

• The map is at a 1:50,000 scale, providing detailed spatial resolution.
• The description identifies ten stratigraphic subdivisions within a previously undivided formation.
• The structural geology is characterized across three distinct regions with specific deformation styles.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset may reflect geographic bias inherent to the specific study area in southeast Yukon.

Provenance

Source

Government of Yukon

Collection Method

Geological field mapping and analysis.

Freshness

Last updated 2026-04-17 15:46:15.996691; freshness should be verified.

Geography

Upper Hyland River area, southeast Yukon (parts of 105H/8, 105H/9).