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Extent of Archaean and Late Proterozoic Rocks under the ice cap of Princess Elizabeth Land, Antarctica, inferred from Geophysics

Created 16/10/2025

Updated 16/10/2025

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A helicopter survey has mapped gravity and magnetic anomalies and ice thickness over a 100 km by 100 km ice cap area, inland from coastal outcrops of Archaean and Late Proterozoic rocks of the Princess Elizabeth Land coast. The gravity and magnetic anomalies indicate that there is no major change in crustal structure across the boundary between Archaean and Lake Proterozoic rocks. The Archaean rocks of the Vestfold Hills do not extend further inland, but they may extend under Prydz Bay or as a narrow coastal strip under ice inland from the West Ice Shelf, 150 km to the northeast of the Vestfold Hills. Late Proterozoic rocks probably underlie most of the ice cap along the coast.

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Title Extent of Archaean and Late Proterozoic Rocks under the ice cap of Princess Elizabeth Land, Antarctica, inferred from Geophysics
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/e51bbcbb-da3a-40b2-bb56-7eddba39fb42
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        60.0,
        -74.0
      ],
      [
        90.0,
        -74.0
      ],
      [
        90.0,
        -66.0
      ],
      [
        60.0,
        -66.0
      ],
      [
        60.0,
        -74.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Extent of Archaean and Late Proterozoic Rocks under the ice cap of Princess Elizabeth Land, Antarctica, inferred from Geophysics". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/extent-of-archaean-and-late-proterozoic-rocks-under-the-ice-cap-of-princess-elizabeth-land-anta