Sediment and Geophysical Data from the Argo Abyssal Plain, Northeast Indian Ocean

A series of geophysical traverses and sediment cores collected by the Atlantis II vessel provide information on sedimentary and tectonic processes in the northeast Indian Ocean. The dataset includes isopach maps of sediment thickness, evidence of probable diapirs, and a diverse group of sediment cores from sites above and below the CCD, fore-arc basins, and abyssal plains. It was aggregated by the Australian Ocean Data Network and last updated on 2026-04-16.

Use Cases

• Model sediment thickness distribution based on isopach maps derived from seismic profiles.
• Analyze the composition and origin of probable diapirs (salt or mud-cored) in the Argo Abyssal Plain.
• Study sedimentary processes above and below the carbonate compensation depth (CCD) using recovered siliceous clays and calcareous oozes.
• Investigate sulphate reduction in marine sediments using calcareous clay samples from a fore-arc basin site.
• Research the geological origin of rises like Joey Rise and Roo Rise based on recovered hyaloclastites and basalt samples.

Strengths

• Data collection involved a series of geophysical traverses and coring at selected localities, suggesting systematic sampling.
• The dataset includes a diverse group of sediment cores from multiple distinct environments (e.g., below CCD, above CCD, fore-arc basin, abyssal site).
• Isopach maps showing sediment thickness distribution were prepared from seismic profiles.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description states it was not possible to determine whether probable diapirs are salt or mud-cored.

Provenance

Source

Australian Ocean Data Network

Collection Method

Geophysical traverses and sediment coring by the Atlantis II vessel.

Freshness

Last updated 2026-04-16 16:24:25.102084; freshness should be verified.

Geography

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