Australian Lithosphere 3D Electrical Resistivity Model

Australia's sub-continental lithosphere is modeled in 3D electrical resistivity. The model was created by inverting magnetotelluric responses from the AusLAMP and AWAGS arrays using a novel distributed 3-D electromagnetic inverse solver. Presented at the 2025 Australasian Exploration Geoscience Conference, it unlocks insights into crust-mantle controls on mineral resources.

Use Cases

• Correlate electrical anomalies with major tectonic units based on the 3D resistivity model.
• Investigate crust-mantle controls on mineral resource occurrence based on the described lithospheric anomalies.
• Validate geophysical inversion methods using the novel GoFEM solver described in the methodology.

Strengths

• Model was created using a novel distributed 3-D electromagnetic inverse solver (GoFEM) that performs inversion directly in a spherical frame.
• Integrates data from two major geophysical arrays: the Australian Lithospheric Architecture Magnetotelluric project (AusLAMP) and the Australia-wide Array of Geomagnetic Stations (AWAGS).

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 data_gov_au.

Provenance

Source

Geoscience Australia Data

Collection Method

Inversion of magnetotelluric and geomagnetic responses using the GoFEM solver.

Freshness

Last updated 2026-05-19 22:38:50.536917; freshness should be verified

Geography

Australia