5028 Block 3 (Northwest): Total Magnetic Intensity Grid with RTP Applied

415,090 line-kilometres of airborne magnetic data were acquired in 2024 by the WA Government to create this geophysical grid. The Total Magnetic Intensity grid has been processed with Reduction to Pole and a first vertical derivative, resulting in units of nanoTesla per kilometer. Geoscience Australia geophysicists performed quality checks to ensure the final data is fit-for-purpose for revealing sub-surface geological structure.

Use Cases

• Map geological structures and lithological boundaries based on magnetic anomaly patterns.
• Identify potential mineral deposits based on contrasts in magnetic susceptibility of rocks.
• Integrate magnetic data with other geophysical datasets for 3D subsurface modeling.
• Conduct regional-scale geological interpretation based on a 20m resolution grid.

Strengths

• Data quality was checked by Geoscience Australia geophysicists to be fit-for-purpose.
• Grid is derived from 415,090 line-kilometres of data acquired at 100m line spacing and 50m terrain clearance.
• Processing includes Reduction to Pole and a first vertical derivative to enhance interpretability.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and exact file size are unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Airborne magnetic survey data acquired by the WA Government, processed via Fast Fourier Transform (FFT).

Time Range

Data acquired in 2024.

Freshness

Last updated 2026-05-14 04:43:30.281667; freshness should be verified.

Geography

Covers the Narryer region, specifically the 5028 Block 3 (Northwest) grid.