5028 Block 3 (Northwest) Grid of Total Magnetic Intensity (TMI)

Geoscience Australia provides a grid of Total Magnetic Intensity (TMI) data for the 5028 Block 3 (Northwest) region. The grid has a cell size of approximately 20 meters, with data values in nanoTesla (nT). It was acquired in 2024 by the WA Government, consisting of 415,090 line-kilometres of data at 100m line spacing and 50m terrain clearance.

Use Cases

• Map subsurface geological structures based on magnetic anomaly patterns.
• Identify mineral resource potential based on magnetic susceptibility contrasts in rock formations.
• Integrate magnetic data with other geophysical surveys for comprehensive geological interpretation.
• Model the depth and geometry of magnetic basement rocks based on processed TMI variations.

Strengths

• Data is quality-checked by GA geophysicists to ensure it is fit-for-purpose.
• Grid is derived from 415,090 line-kilometres of aeromagnetic survey data.
• Data has been processed with standard reductions to isolate the magnetic response of subsurface rocks.

Limitations

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

Provenance

Source

Geoscience Australia Data

Collection Method

Acquired via airborne survey by the WA Government.

Time Range

2024

Freshness

Last updated 2026-05-14 04:45:56.421971

Geography

5028 Block 3 (Northwest) region, Australia