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Western extension of the Woodroffe Thrust, Musgrave Block, central Australia

Created 16/10/2025

Updated 16/10/2025

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The Woodroffe Thrust has until now been known in outcrop only in South Australia and the Northern Territory, where it forms part of a system of south-dipping thrust faults that penetrate the continental crust forming the Proterozoic Musgrave Block. Detailed mapping by AGSO in 1991 located new exposures of granite mylonite-previously mapped as sheared porphyry-in Western Australia, at a position predicted from geophysical data some 20 years earlier, and 120 km farther west than the most westerly known previous exposure. The Western Australian exposures of the thrust separate subeclogite facies metamorphic rocks and deformed granite in the south from amphibolite facies deformed granite in the north. The thrust dips gently south, and is marked by isolated exposures of mylonite derived from the granite north of the thrust. Lineations in the mylonite and in the northern and southern terranes are subhorizontal to gently plunging and east-northeast-trending, oblique to the strike of the thrust.

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Field Value
Title Western extension of the Woodroffe Thrust, Musgrave Block, central Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/ebe42eaa-8f9b-443a-bde6-7a3d4123a4a8
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        126.5,
        -28.0
      ],
      [
        134.2,
        -28.0
      ],
      [
        134.2,
        -24.5
      ],
      [
        126.5,
        -24.5
      ],
      [
        126.5,
        -28.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Western extension of the Woodroffe Thrust, Musgrave Block, central Australia". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/western-extension-of-the-woodroffe-thrust-musgrave-block-central-australia