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Continental shelf drift deposit indicates non-steady state Antarctic bottom water production in the Holocene

Created 17/10/2025

Updated 17/10/2025

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A late Quaternay, current-lain sediment drift deposit over 30 metres in thickness has been discovered on the continental shelf of East Antarctica in an 850 metre deep glacial trough off George Vth Land. Radiocarbon dating indicates that a period of rapid deposition on the drift occurred in the mid-Holocene, between about 3 000 and 5 000 years before present.

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Field Value
Title Continental shelf drift deposit indicates non-steady state Antarctic bottom water production in the Holocene
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/9e36c134-4b6e-4a01-a6c5-74316acdea76
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        142.0,
        -67.0
      ],
      [
        146.0,
        -67.0
      ],
      [
        146.0,
        -65.0
      ],
      [
        142.0,
        -65.0
      ],
      [
        142.0,
        -67.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Continental shelf drift deposit indicates non-steady state Antarctic bottom water production in the Holocene". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/continental-shelf-drift-deposit-indicates-non-steady-state-antarctic-bottom-water-production-in