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

Four distinct glacial facies and two sediment drift facies provide a record of ice sheet advance and retreat in the George V Basin. Radiocarbon ages from sediment cores link the fluted sediment drift deposit to the Last Glacial Maximum. This dataset, published by Geoscience Australia Data, reconstructs late Quaternary ice dynamics using integrated Chirp sub-bottom profiles, multi-channel seismic data, and core samples.

Use Cases

• Reconstructing ice sheet grounding line history based on the four distinguished glacial facies.
• Modeling the impact of sea-level rise on Antarctic ice margins based on evidence of sensitivity at the end of the LGM.
• Dating glacial events using the sediment drift deposit that overlies older glacial facies.
• Analyzing sub-glacial and ice-shelf processes from seismic facies representing moraines, glacial flutes, and ice-keel turbation.

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 defined characteristics.
• Provides temporal constraints with 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 of 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 2026-03-25 16:51:06.275937; freshness should be verified.

Geography

George V Basin, East Antarctica.