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Energy Potential of the Millungera Basin: A Newly Discovered Basin in North Queensland

Created 17/10/2025

Updated 17/10/2025

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Deep seismic reflection surveys in North Queensland collected in 2006 and 2007 discovered a previously unknown sedimentary basin, named the Millungera Basin, which is completely covered by a thin succession of the Jurassic-Cretaceous Eromanga-Carpentaria Basin. Interpretation of regional aeromagnetic data suggests that the basin could have horizontal dimensions of up to 280 km by 95 km. Apart from regional geophysical data, virtually no geological information exists on the basin. To complement the seismic data, new magnetotelluric data have been acquired on several lines across the basin An angular unconformity between the Eromanga and Millungera Basins indicates that part of the Millungera Basin was eroded prior to deposition of the Eromanga-Carpentaria Basin. Both the western and eastern margins of the Millungera Basin are truncated by thrust faults, with well-developed hangingwall anticlines occurring above the thrusts at the eastern margin. The basin thickens slightly to the east, to a maximum depth of ~3200 m. Interpretation of gravity profiles suggests that the basin deepens to the south, possibly reaching a maximum thickness of 4000 m. Using sequence stratigraphic principles, three sedimentary packages, subdivided into five discrete sequences, have been mapped in the main seismic section. The geometry of internal stratigraphic sequences and post-depositional thrust margins indicate that the original succession was much thicker than preserved today. Presented at the Australian Petroleum Production and Exploration Association (APPEA) conference 2011.

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Field Value
Title Energy Potential of the Millungera Basin: A Newly Discovered Basin in North Queensland
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/da999d41-b5c5-46b6-bfed-dcd03c48a2b4
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        138.0,
        -26.0
      ],
      [
        145.0,
        -26.0
      ],
      [
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        -17.25
      ],
      [
        138.0,
        -17.25
      ],
      [
        138.0,
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      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Energy Potential of the Millungera Basin: A Newly Discovered Basin in North Queensland". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/energy-potential-of-the-millungera-basin-a-newly-discovered-basin-in-north-queensland