JSON format icon JSON RDF format icon RDF ISO19115-3 XML

The sediments of the Argo Abyssal Plain and adjacent areas, northeast Indian Ocean

Created 25/06/2017

Updated 12/08/2023

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

A series of geophysical traverses by the Atlantis II across the Argo Abyssal Plain, together with coring at a number of selected localities has provided new information on sedimentary and tectonic processes in this region of the northeast Indian Ocean. Isopach maps prepared from the seismic profiles show that sediment thicknesses crudely parallel the bathymetry. The presence of some diapirs in the Argo Abyssal Plain was indicated. It was not possible to say from the present program whether the probable diapirs are salt or mud-cored. A diverse group of cores were obtained from a variety of sites including siliceous clays from below the CCD, calcareous oozes from above the CCD, calcareous clays (showing evidence of abundant sulphate reduction) from a fore-arc basin site, and manganese nodules from an abyssal site. In addition, hyaloclastites from the Joey Rise area (north of the Exmouth Plateau), suggest that the Joey Rise, and possibly also the Roo Rise, are underlain by basaltic material. A sample of basalt was also recovered from the outer part of the Exmouth Plateau.

You can also purchase hard copies of Geoscience Australia data and other products at http://www.ga.gov.au/products-services/how-to-order-products/sales-centre.html

Files and APIs

Tags

Additional Info

Field Value
Title The sediments of the Argo Abyssal Plain and adjacent areas, northeast Indian Ocean
Language English
Licence Creative Commons Attribution 4.0 International
Landing Page https://data.gov.au/data/dataset/fc37add3-6743-45da-820c-c76b7ad9b894
Contact Point
Geoscience Australia
sales@ga.gov.au
Reference Period 25/06/2017
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        95.0,
        -25.0
      ],
      [
        135.0,
        -25.0
      ],
      [
        135.0,
        5.0
      ],
      [
        95.0,
        5.0
      ],
      [
        95.0,
        -25.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Data.gov.au