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

The George V Basin in East Antarctica contains seismo-stratigraphic evidence of late Quaternary ice sheet evolution. The dataset, from Geoscience Australia, integrates Chirp sub-bottom profiles, multi-channel seismic data, and sediment cores to distinguish four glacial facies and two sediment drift facies. Radiocarbon ages from sediment cores link these facies to events including the Last Glacial Maximum.

Use Cases

• Modeling past ice sheet grounding lines based on described glacial facies distributions.
• Reconstructing paleo-environmental conditions from sediment drift deposit characteristics.
• Calibrating sea-level rise models using the identified sensitivity of the Antarctic fringe to deglaciation.
• Analyzing sub-glacial landform evolution from the described canyon, moraine, and flute features.

Strengths

• Integrates multiple data sources: Chirp sub-bottom profiles, multi-channel seismic data, and sediment cores.
• Distinguishes four specific glacial facies and two sediment drift facies with detailed descriptions.
• Provides temporal constraints using radiocarbon ages 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 single study area in the George V Basin.

Provenance

Source

Geoscience Australia Data

Collection Method

Analysis 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 2026-04-30 12:38:16.231028; freshness should be verified.

Geography

George V Basin, East Antarctica.