Magnetotelluric survey of the Western Gawler Craton, South Australia, 2022

Brief description

This record was harvested by RDA at 2026-09-10T11:58:22.971322+10:00 from NCI's Data Catalogue where it was last modified at 2026-04-15.

Full description

Broadband magnetotelluric (MT) data were acquired in March–April 2022 across the western Gawler Craton, South Australia, to investigate regional variations in crustal electrical conductivity associated with mineral systems within the province. The survey comprised 84 broadband MT site deployments arranged along three approximately east-west traverses oriented across the dominant geological strike. Sites were spaced at approximately 2 km intervals along each traverse. The MT deployments formed part of a coordinated geophysical campaign that also included the deployment of short-period nodal seismic instruments co-located with the MT sites. This collection provides a broadband MT dataset suitable for regional analysis of crustal electrical structure and integration with complementary geological and geophysical datasets across the western Gawler Craton.

Credit

This project was enabled by AuScope and the Australian Government via the National Collaborative Research Infrastructure Strategy (NCRIS): https://www.auscope.org.au

Lineage

Data in this collection were acquired during a broadband magnetotelluric (MT) survey conducted across the western Gawler Craton, South Australia, in March-April 2022. The survey comprised 84 broadband MT site deployments arranged along three approximately east-west traverses designed to sample geological domains across the study area. Short-period nodal seismic instruments were deployed concurrently and co-located with the MT stations as part of a coordinated geophysical campaign. Field acquisition employed LEMI-423 broadband magnetotelluric systems hosted by the University of Adelaide and accessed through the AuScope - ANSIR Research Facility for Earth Sounding. The instrumentation was acquired through a combination of Geological Survey of South Australia and AuScope NCRIS funding. Continued availability of the instrumentation pool is supported through ongoing NCRIS investment via AuScope, including maintenance, calibration, refurbishment, and operational management activities. AuScope is supported by the Australian Government’s National Collaborative Research Infrastructure Strategy (NCRIS). Data acquisition was jointly funded by Western Areas Ltd and the Geological Survey of South Australia through Accelerated Discovery Initiative (ADI) project RD02-296, entitled ""Western Gawler Project: Magnetotelluric (MT), Passive Seismic and Magnetic Modelling Study"". This collection documents the acquisition history, instrumentation, funding sources, and operational context associated with the Western Gawler Craton MT survey and provides provenance information for all derived datasets.