Seismic Stratigraphy and Sediment Distribution on the Wilkes Land and Terre Adelie Margins

Seismic reflection data show two major sedimentary basins containing more than 5 seconds TWT (> 9 km) of sediments. Four seismic megasequences (MS4 to MS1) are identified, bounded by basement, unconformities, and the seafloor. The data was published by Geoscience Australia Data and was last updated on 2026-04-20.

Use Cases

• Modeling sedimentary basin evolution based on identified seismic megasequences.
• Analyzing sediment thickness and distribution in the Sabrina and Budd Coast Basins.
• Correlating geological strata with the Australian margin for paleogeographic reconstruction.
• Investigating sediment provenance linked to sub-glacial basins like the Totten Glacier.

Strengths

• Identifies sediment thickness exceeding 9 km in major basins.
• Defines four distinct seismic megasequences with interpreted age boundaries.
• Provides seismic correlation with the Australian margin for age interpretation.

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 data_gov_au.

Provenance

Source

Geoscience Australia Data

Collection Method

Seismic reflection data collection and interpretation.

Time Range

Interpreted geological ages from Late Jurassic to present.

Freshness

Last updated 2026-04-20 03:43:33.563597; freshness should be verified.

Geography

Continental margin of Wilkes Land and Terre Adelie, East Antarctica.