Magnetotelluric survey of the Kalkaroo Cu-Au Deposit, South Australia, 2020-2021

Brief description

This record was harvested by RDA at 2026-09-03T11:58:31.048857+10:00 from NCI's Data Catalogue where it was last modified at 2026-07-21.

Full description

Broadband magnetotelluric (MT) data were acquired across the Kalkaroo Cu-Au deposit and surrounding Kalkaroo magnetic dome within the Curnamona Province, South Australia, between November 2020 and August 2021 to investigate subsurface electrical conductivity structure associated with mineralisation and regional geological architecture. The survey comprised multiple acquisition campaigns employing a combination of broadband and ultra-wideband MT instrumentation. High-resolution MT measurements were acquired across the Kalkaroo Cu-Au deposit using a dense grid comprising approximately 126 sites with nominal spacing of 300 m. Broader regional coverage of the surrounding Kalkaroo magnetic dome was achieved using an additional grid of approximately 104 sites with nominal spacing of 1.2 km. Field acquisition employed instrumentation operated by Geoscience Australia and the University of Adelaide, including Phoenix MTU-8A, Phoenix MTU-5C, and LEMI-423 systems. Parallel instrument comparison tests and remote-reference deployments were incorporated into the survey design to support data quality assessment and processing. This collection provides a broadband MT dataset suitable for high-resolution investigation of electrical resistivity structure associated with the Kalkaroo Cu-Au deposit and for regional-scale analysis of the surrounding Curnamona Province.

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 Kalkaroo Cu-Au deposit and surrounding Kalkaroo magnetic dome within the Curnamona Province, South Australia, between November 2020 and August 2021. Field acquisition was undertaken through multiple survey campaigns employing a combination of dense near-deposit coverage and broader regional-scale coverage. High-resolution MT measurements were acquired across the Kalkaroo Cu-Au deposit using a dense grid comprising approximately 126 sites with nominal spacing of 300 m. Broader regional coverage of the surrounding Kalkaroo magnetic dome was achieved using an additional grid of approximately 104 sites with nominal spacing of 1.2 km. Parallel instrument comparison tests and multiple remote-reference deployments formed part of the survey design. Field acquisition employed broadband and ultra-wideband magnetotelluric (MT) instrumentation provided by Geoscience Australia and the University of Adelaide, including Phoenix MTU-8A systems operated by Geoscience Australia and Phoenix MTU-5C and LEMI-423 systems hosted and operated by the University of Adelaide. University of Adelaide instrumentation was accessed through the AuScope - ANSIR Research Facility for Earth Sounding. The University of Adelaide instrument pool was acquired through AuScope funding provided under the Australian Government’s National Collaborative Research Infrastructure Strategy (NCRIS). Continued availability of the ANSIR 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 the Geological Survey of South Australia and Havilah Resources Ltd through Accelerated Discovery Initiative (ADI) project RD01-117. Logistical support for field operations was provided by Havilah Resources. This collection documents the acquisition history, instrumentation, funding sources, survey design, and operational context associated with the Kalkaroo MT survey and provides provenance information for all derived datasets.