5028 Block 2: Total Magnetic Intensity Grid for Narryer Survey, Australia

A processed geophysical grid of total magnetic intensity (TMI) with reduction to pole and first vertical derivative applied, covering the Narryer survey area in Western Australia. The grid has a cell size of approximately 20 meters and is given in units of nT per metre, derived from 415,090 line-kilometres of data acquired in 2024 by the WA Government. Geoscience Australia processed and quality-checked the data, which reveals subsurface geological structures.

Use Cases

• Map subsurface geological structures based on magnetic susceptibility contrasts mentioned in the description.
• Locate structural features such as dykes based on the magnetic response grid.
• Interpret crustal composition and architecture for mineral exploration based on the processed magnetic anomaly data.

Strengths

• Data is quality-checked by GA geophysicists to be fit-for-purpose.
• Grid is derived from a substantial 415,090 line-kilometres of aerial survey data.
• Processing includes variable reduction to pole and first vertical derivative to enhance interpretability.

Limitations

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

Provenance

Source

Geoscience Australia Data

Collection Method

Aerial magnetic survey acquired by the WA Government, processed using INTREPID Geophysics software.

Time Range

Survey data acquired in 2024.

Freshness

Last updated 2026-05-14 09:34:34.488119; freshness should be verified.

Geography

Narryer survey area, Western Australia, Australia.