From Geoscience Australia
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Geology of the Stillwell Hills MapServer

Created 09/01/2026

Updated 09/01/2026

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The Stillwell Hills region comprises granulite-facies gneisses which record evidence for multiple episodes of deformation and metamorphism spanning more than 2500 million years. The predominant orthogneiss package (Stillwell Orthogneiss) is thought to represent the margin of an Archaean craton exposed in Enderby Land, some 150 km to the west that was reworked during the late Proterozoic. Younger additions to the crust include Palaeoproterozoic charnockitic gneiss (Scoresby Charnockite) and Meso-Neoproterozoic mafic sills and dykes (Point Noble Gneiss, Kemp Dykes) and felsic pegmatites (Cosgrove Pegmatites). Subordinate supracrustal rocks, including metaquartzite, metapelitic, metapsammitic and calc-silicate gneiss (Dovers Paragneiss, Sperring Paragneiss, Stefansson Paragneiss, Keel Paragneiss, Ives Paragneiss) are intercalated and infolded with the Archaean-Palaeoproterozoic orthogneisses. This map service is derived from the map product 'The Geology of the Stillwell Hills, Antarctica' (GEOCAT 72717). This map service is published with the permission of the CEO, Geoscience Australia.

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Additional Info

Field Value
Title Geology of the Stillwell Hills MapServer
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/1073f3b3-92df-4910-acbb-53b7a63d13da
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 04/05/2016
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        59.293,
        -67.476
      ],
      [
        59.586,
        -67.476
      ],
      [
        59.586,
        -67.286
      ],
      [
        59.293,
        -67.286
      ],
      [
        59.293,
        -67.476
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Geology of the Stillwell Hills MapServer". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/geology-of-the-stillwell-hills-mapserver