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

Four glacial facies and two sediment drift facies have been distinguished from Chirp sub-bottom profiles and multi-channel seismic data. Radiocarbon ages from sediment cores link the glacial advance producing Facies MD2 to the Last Glacial Maximum. This dataset, from Geoscience Australia Data, reconstructs the late Quaternary ice sheet/ice shelf extent in the George V Basin.

Use Cases

• Reconstructing past ice sheet grounding lines based on identified glacial facies.
• Modeling sediment drift formation and ice-keel turbation processes based on described facies characteristics.
• Correlating glacial advance/retreat events with climate periods like the LGM based on radiocarbon-dated cores.
• Assessing sensitivity of the East Antarctic fringe to sea-level rise during deglaciation based on the study's implications.

Strengths

• Analysis 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 defined characteristics.
• 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.
• Description metadata is limited; actual data quality requires manual inspection after download.

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 2026-05-14 09:21:11.868845; freshness should be verified.

Geography

George V Basin, East Antarctica.