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

East Antarctic continental margins of Wilkes Land and Terre Adelie contain seismic reflection data identifying two major sedimentary basins with over 5 seconds two-way travel time of sediment. Four seismic megasequences bounded by basement and unconformities are interpreted from Late Jurassic to mid-Cretaceous age. The dataset was published by the Australian Ocean Data Network and last updated on 2026-06-04.

Use Cases

• Model sediment thickness and basin evolution based on identified seismic megasequences.
• Correlate geological timelines between Antarctic and Australian margins based on seismic stratigraphy.
• Estimate sediment provenance and glacial history based on the interpreted Budd Coast Basin depocentre.
• Analyze rift and post-rift sedimentation patterns based on the described Sabrina Basin.

Strengths

• Identifies sedimentary basins containing more than 5 seconds two-way travel time (>9 km) of sediments.
• Describes a major depocentre (Budd Coast Basin) with a maximum observed thickness of 5 seconds two-way travel time (9 km) of post-rift sediments.
• Interprets seismic sequences with age constraints from the Turonian to the Middle Eocene.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Freshness should be verified; last updated 2026-06-04 05:52:21.800563.

Provenance

Source

Australian Ocean Data Network

Collection Method

Seismic reflection data analysis.

Time Range

Interpreted geological ages from Late Jurassic to present.

Freshness

2026-06-04 05:52:21.800563

Geography

Wilkes Land and Terre Adelie margins, East Antarctica.