Northern Australia is covered by processed gravity and magnetic grids generated by Geoscience Australia. The gravity data includes derivative datasets for the North-West Shield Western Australia, Northern Territory, and Queensland regions, while the magnetic dataset covers the North-West Shield. Data processing integrated satellite, ground, airborne, and shipborne sources to produce stitched Bouguer gravity and Total Magnetic Intensity grids.
Use Cases
- First-pass geological interpretation based on free-air gravity anomaly images
- Gravity modeling using processed free-air gravity anomaly data
- Analyzing magnetic basement structure and composition based on Total Magnetic Intensity anomalies
- Identifying shallow magnetic sources like volcanics or intrusions from magnetic anomaly data
Strengths
- Data integrates multiple sources: satellite, ground, airborne, and shipborne surveys
- Coverage includes three defined regions: North-West Shield WA, Northern Territory, and Queensland
- Processing used industry-standard Geosoft Oasis montaj software and GridKnit module
Limitations
- Column-level documentation is absent; field semantics must be inferred after download
- Row count is unknown, which may limit suitability assessment
- The magnetic dataset is only available for the North-West Shield Western Australia region
Provenance
- Source
- Geoscience Australia (GA) and the Geophysical Archive Data Delivery System (GADDS)
- Collection Method
- Data evaluation and processing of gravity and magnetic data available in the area of interest, stitching grids from various sources.
- Freshness
- Last updated 2026-04-16 16:17:46.679788; freshness should be verified
- Geography
- Northern Australia, specifically regions between latitudes 7-30⁰ S and longitudes 110-160⁰ E.