Seismic Stratigraphy of East Antarctic Margins with Sediment Thickness Data

Seismic reflection data reveals two major sedimentary basins along the Wilkes Land and Terre Adelie margins in East Antarctica. The dataset identifies four seismic megasequences and reports sediment thicknesses exceeding 5 seconds two-way travel time, which corresponds to over 9 kilometers. The Australian Ocean Data Network published this dataset, which was last updated in April 2026.

Use Cases

• Modeling sedimentary basin evolution based on identified seismic megasequences.
• Analyzing rift and post-rift sediment distribution patterns described for the Sabrina and Budd Coast Basins.
• Correlating geological timelines between Antarctic and Australian margins as mentioned in the description.
• Estimating sub-glacial sediment sources based on the interpreted link to the Totten Glacier basin.

Strengths

• Reports specific sediment thickness measurements exceeding 5 seconds TWT (over 9 km).
• Identifies and names two major sedimentary basins (Sabrina Basin and Budd Coast Basin).
• Defines four distinct seismic megasequences (MS4 to MS1) with interpreted age boundaries.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the specific Antarctic margins studied.

Provenance

Source

Australian Ocean Data Network

Collection Method

Seismic reflection data collection and interpretation.

Time Range

Covers geological sequences from Late Jurassic to present, based on interpreted ages.

Freshness

Last updated 2026-04-10 18:12:43.766618; freshness should be verified.

Geography

Wilkes Land and Terre Adelie continental margins, East Antarctica.