East Tennant Project

Location of the East Tennant project area shown on a background of Bouguer gravity overlain on the first vertical derivative of magnetic data.

Location of the East Tennant project.

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 has been 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 reveals crustal-scale conductivity pathways that coincide with regional faults.

Stratigraphic drilling is planned as part of the National Drilling Initiative, a major component of the MinEx CRC. This drilling 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.

Location of the East Tennant project area shown on a background of Bouguer gravity overlain on the first vertical derivative of magnetic data.

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.

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.

Data & Publications

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