Argo Abyssal Plain Sediment and Geophysical Survey Data, Northeast Indian Ocean

Geophysical traverses and sediment cores from the Atlantis II survey provide information on sedimentary and tectonic processes in the Argo Abyssal Plain. The dataset includes seismic profiles for isopach maps, diverse sediment cores from sites above and below the carbonate compensation depth, and samples of hyaloclastites and basalt. Data was collected by Geoscience Australia and last updated in March 2026.

Use Cases

• Model sediment thickness distribution based on seismic profiles and isopach maps.
• Analyze sediment composition and diagenetic processes based on core samples including siliceous clays, calcareous oozes, and calcareous clays.
• Investigate potential diapiric structures in the abyssal plain based on seismic indications.
• Study the volcanic underpinning of oceanic rises based on recovered hyaloclastites and basalt samples.

Strengths

• Includes diverse sample types: siliceous clays, calcareous oozes, calcareous clays, manganese nodules, hyaloclastites, and basalt.
• Combines geophysical traverses with physical core samples from selected localities.
• Data was last updated on 2026-03-25, suggesting recent metadata maintenance.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description does not specify whether identified diapirs are salt or mud-cored.

Provenance

Source

Geoscience Australia Data

Collection Method

Geophysical traverses and coring from the Atlantis II survey vessel.

Time Range

null

Freshness

Last updated 2026-03 25 15:29:16.416253; freshness should be verified.

Geography

Argo Abyssal Plain and adjacent areas, northeast Indian Ocean, including Joey Rise and Exmouth Plateau.