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

Late Quaternary geological data reconstructs the advance and retreat of the East Antarctic Ice Sheet in the George V Basin. The dataset, published by 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 the glacial advance producing Facies MD2 to the Last Glacial Maximum.

Use Cases

• Modeling past ice sheet grounding lines based on described glacial facies distributions.
• Correlating seismic stratigraphic units with sediment core ages to establish a chronology.
• Analyzing the sensitivity of the Antarctic margin to sea-level rise during the last deglaciation based on the described sedimentary evidence.

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 clear environmental interpretations.
• Provides temporal constraints through radiocarbon dating 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 freshness should be verified despite the listed last update of 2026-04-20.

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, with specific events dated to the Last Glacial Maximum.

Freshness

Last updated 2026-04-20 03:47:30.863407

Geography

George V Basin, East Antarctica