Upper Fifteenmile Group Stratigraphic Section in Ogilvie Mountains

An approximately 2-kilometer-thick stratigraphic section measured through three shale-carbonate sequences documents the upper Fifteenmile Group in the Coal Creek inlier. The descriptions provide the basis for correlation with Proterozoic strata in eastern Alaska and the eastern Ogilvie Mountains. The dataset was published by the Government of Yukon and last updated on April 17, 2026.

Use Cases

• Correlating Proterozoic strata across inliers based on lithological descriptions.
• Analyzing shallowing-upward sedimentary cycles based on the three sequences described.
• Studying abrupt transgression events based on evidence of preceding black shale layers.
• Comparing carbonate units with evidence of shallow water and periodic emergence.
• Investigating stratigraphic gaps and unconformities based on missing dolostone sequences.

Strengths

• Stratigraphic section is approximately 2 kilometers thick.
• Describes three consecutive shale-carbonate sequences.
• Provides lithological details for correlation with strata in adjacent regions.

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 Ogilvie Mountains and Coal Creek inlier.

Provenance

Source

Government of Yukon

Collection Method

Stratigraphic section measurement and geological description.

Time Range

Neoproterozoic

Freshness

Last updated 2026-04-17 15:56:19.273348; freshness should be verified.

Geography

Coal Creek inlier in the Ogilvie Mountains, Yukon, and correlations to eastern Alaska.