East Tennant Project

Due to the complexity of this image and the niche scientific target audience, no alternative description has been provided. Please email Geoscience Australia at clientservices@ga.gov.au for an alternative description.

Location of the East Tennant project (black outline). Base layer is gravity coverage draped over the first vertical derivative magnetic coverage.

The East Tennant project area sits within the Tennant Creek to Mount Isa focused integrated study area. It is located east of Tennant Creek and is defined by an approximately northeast-trending corridor extending for 350 km situated between Tennant Creek and the Queensland border. The East Tennant area is almost completely covered by sedimentary rocks of the Georgina Basin which obscure its potential to host mineral systems. Despite the lack of exposed basement rocks in the area, the East Tennant area was selected as an area for ongoing detailed geoscientific investigation through integration of new multi-disciplinary and multi-scale geoscience data.

The East Tennant region is characterised by a range of geological features that are favourable for mineral systems, including large-scale changes in lithospheric architecture and zones of high electrical conductivity in the crust and mantle. Detailed gravity and broadband magnetotelluric data acquired by the Exploring for the Future Program reveal crustal-scale conductivity pathways that coincide with regional faults.

Due to the complexity of this image and the niche scientific target audience, no alternative description has been provided. Please email Geoscience Australia at clientservices@ga.gov.au for an alternative description.

East Tennant borehole locations. Base layer is gravity coverage draped over the first vertical derivative magnetic coverage.

Stratigraphic drilling was conducted as part of MinEx CRC’s National Drilling Initiative. Ten holes were drilled through a range of cover sequences and into basement for a total of nearly 4000 m including over 1500 m of diamond cored basement rocks. Data from this drilling program will better constrain the East Tennant basement geology and calibrate predictive mineral potential maps to further our understanding of the prospectivity of this promising region. Field data is available for download below and additional data will be progressively added as it becomes available.

Collaborations

Geoscience Australia’s activities in the East Tennant project area are being undertaken in collaboration with the Northern Territory Geological Survey and the MinEx CRC.

Due to the complexity of this image and the niche scientific target audience, no alternative description has been provided. Please email Geoscience Australia at clientservices@ga.gov.au for an alternative description.

Regional faults, AusLAMP crustal conductivity, AusARRAY crustal and lithospheric thickness, and the location of the new East Tennant mineral exploration fairway. Infill geophysical data coverage is also shown. The lower panel shows a section through a 3D conductivity model derived from AusLAMP and infill magnetotelluric data.

Data & Publications

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