Yukon Aeromagnetic Derivative Maps for NTS 105M

Government of Yukon reprocessed aeromagnetic data between November 2016 and March 2017. The dataset provides four standardized magnetic derivative maps for each 250k-scale map sheet: Residual Total Magnetic Field, Reduced-to-Pole, and its first vertical and tilt derivatives. These maps are available as PDFs, GeoTIFFs, and Geosoft grid files with accompanying colour ramps.

Use Cases

• Mineral exploration targeting based on magnetic anomaly patterns.
• Regional geological mapping and structural interpretation using derivative maps.
• Integrating legacy assessment report data with modern 1:250,000 scale compilations.
• Creating base maps for geophysical surveys and field studies.

Strengths

• Data underwent a standardized reprocessing and levelling procedure between November 2016 and March 2017.
• Provides four specific magnetic derivative products (Residual Total Magnetic Field, RTP, RTP_VD, RTP_TDR) for analysis.
• Available in multiple, industry-standard geospatial formats (PDF, GeoTIFF, Geosoft grid).

Limitations

• Key metadata such as row count, file size, and specific column/attribute details are unknown.
• The temporal coverage of the original source data is unclear, with one source mentioning assessment reports submitted prior to March 2015.
• Dataset descriptions are repetitive across sources, suggesting potential duplication in listings rather than new information.

Provenance

Source

Government of Yukon, with reprocessing work contracted to Aurora Geosciences Ltd.

Collection Method

Compilation, levelling, and merging of publicly available digital magnetic data from assessment reports and existing 1:250,000 scale surveys.

Time Range

Reprocessing performed November 2016 to March 2017; source assessment report data predates March 2015.

Freshness

2026-05-20 16:31:50.799667

Geography

Yukon, Canada, specifically for National Topographic System (NTS) map sheet 105M.