cr148926

The [Carpentaria Conductivity Anomaly Magnetotelluric (MT) survey](https://geoscience.data.qld.gov.au/data/magnetotelluric/mt104963) was a regional survey, focused to the south of Cloncurry. The survey was designed to link existing regional magnetotelluric lines, allowing integration with the 94 MTI seismic line and the Camooweal seismic survey, and therefore features some transects outside of the main grid portion of the survey.

The survey was funded through the Queensland Government's New Economy Minerals Initiative (NEMI), which aims to support discovery of mineral deposits in the Mount Isa Region. Geoscience Australia contributed to the funding of the project with funds from the Exploring For The Future (EFTF) initiative.

The survey area is partially covered by conductive sediments of the Eromanga Basin. The cover thickness ranges from zero metres in the outcropping portions of the survey, to over 1000 meters in the south.

Acquisition started in August 2023 and was completed in June 2024. Australian Geophysical Services ,in collaboration with Quantec Geoscience, were responsible for field acquisition. Data were collected at variable station spacing with a 10 km station spacing, 5km spacing along the portion of CA2000 which is coincident with deep crustal seismic lines. Transects in the central grid are spaced at 20km with wider spaced lines in the southern portion of the survey. Survey is targeting a bandwidth of 0.001–1000s. Instruments were generally left recording for a minimum of 40 hours. Targeting data to 1000 s signal strength was generally good throughout the survey, most sites achieved this although there are local conditions which prevent complete coverage of 1000 s data. The contractor logistics report is included as an appendix to this report.

ISSN 2206-0340
ISBN 978-1-9256-0954-7

Bibliographic reference: Brown, D.D., Kerr,J.M., Aivazpourporgou. S. **2024**. Carpentaria Conductivity Anomaly Magnetotelluric Survey.
GSQ Technical Notes 2024/03.