East Antarctic Ice Sheet Evolution from Seismic Data in George V Basin

Seismo-stratigraphic evidence reconstructs the late Quaternary ice sheet and ice shelf extent in the George V Basin, East Antarctica. The dataset distinguishes four glacial facies and two sediment drift deposits based on Chirp sub-bottom profiles, multi-channel seismic data, and sediment cores. Radiocarbon ages from sediment cores link facies to the Last Glacial Maximum and older grounding events.

Use Cases

• Reconstruct past ice sheet grounding lines based on identified glacial facies.
• Model meltwater discharge contributions during deglaciation based on evidence of sea-level rise sensitivity.
• Date glacial advance and retreat events based on radiocarbon ages from sediment cores.
• Analyze sediment drift depositional environments based on described drape/sheet and fluted characters.

Strengths

• Integrates multiple data sources: Chirp sub-bottom profiles, multi-channel seismic data, and sediment cores.
• Distinguishes four specific glacial facies related to ice advance and retreat.
• Provides radiocarbon age constraints linking facies to the Last Glacial Maximum.

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 George V Basin study area.

Provenance

Source

Australian Ocean Data Network via data_gov_au

Collection Method

Analyses of Chirp sub-bottom profiles integrated with multi-channel seismic data and sediment cores.

Time Range

Late Quaternary, including the Last Glacial Maximum.

Freshness

Last updated 2026-06-23 01:59:09.904313; freshness should be verified.

Geography

George V Basin, East Antarctica.