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

Seismic reflection data from the Wilkes Land and Terre Adelie margins in East Antarctica reveals two major sedimentary basins containing over 5 seconds TWT (greater than 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 March 25, 2026.

Use Cases

• Modeling sedimentary basin evolution based on identified seismic megasequences.
• Analyzing sediment thickness and distribution for paleoclimate reconstruction.
• Correlating rift and post-rift geological history with the Australian margin.
• Investigating sediment provenance from sub-glacial basins like the Totten Glacier.

Strengths

• Identifies sedimentary basins with sediment thickness exceeding 5 seconds TWT (greater than 9 km).
• Defines four distinct seismic megasequences (MS4 to MS1) with interpreted age boundaries.
• Provides specific basin interpretations, including the Sabrina Basin (Late Jurassic to mid-Cretaceous) and the Budd Coast Basin.

Limitations

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

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 2026-03-25 16:15:08.672620; freshness should be verified.

Geography

Wilkes Land and Terre Adelie continental margins, East Antarctica.