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Submarine valleys on the Ceduna Terrace off South Australia

Created 17/10/2025

Updated 17/10/2025

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A detailed bathymetric map has been compiled for the Ceduna Terrace, off South Australia. The most striking features of the bathymetry are numerous submarine valleys, which dissect the otherwise gently sloping terrace. These are mostly broad and shallow, and form a dendritic tributary system feeding submarine canyons on the lower slope. The valleys were probably eroded by turbidity currents generated near the shelf-break during low sea-level stands. There is little evidence to suggest that they have resulted from mass movement and slumping or from subaerial erosion. Most valleys appear to have developed during the Quaternary, but some may have originated in the Tertiary.

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Additional Info

Field Value
Title Submarine valleys on the Ceduna Terrace off South Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/9686308a-ada0-41c3-9ab1-e4c20435e683
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        129.0,
        -37.0
      ],
      [
        135.0,
        -37.0
      ],
      [
        135.0,
        -33.0
      ],
      [
        129.0,
        -33.0
      ],
      [
        129.0,
        -37.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Submarine valleys on the Ceduna Terrace off South Australia". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/submarine-valleys-on-the-ceduna-terrace-off-south-australia1