5028 Block 3 (Northwest) Grid: Thorium Ground Concentration at 20m Resolution

A radiometric thorium concentration grid for the Narryer region in Western Australia. The dataset consists of 415,090 line-kilometres of data acquired in 2024 by the WA Government, processed to a 20m cell size. It was produced and quality-checked by Geoscience Australia geophysicists to reveal sub-surface geological structure.

Use Cases

• Map thorium distribution based on gamma-ray spectrometry data
• Model geological structures based on processed radiometric responses
• Identify areas of anomalous thorium concentration for mineral exploration
• Integrate radiometric data with other geophysical datasets for regional geological analysis

Strengths

• Data covers 415,090 line-kilometres, providing extensive aerial coverage.
• Processing includes standard reductions and NASVD to isolate rock response.
• Final data was quality-checked by GA geophysicists to be fit-for-purpose.
• High spatial resolution with a cell size of approximately 20 meters.

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 specific survey block.

Provenance

Source

Geoscience Australia Data

Collection Method

Acquired via airborne gamma-ray spectrometric survey at 100m line spacing and 50m terrain clearance.

Time Range

Data acquired in 2024.

Freshness

Last updated 2026-05-14 03:20:32.940277; freshness should be verified.

Geography

Narryer region, Western Australia (Block 3 Northwest).