Four glacial facies and two sediment drift deposits reveal the late Quaternary history of the East Antarctic Ice Sheet in the George V Basin. Chirp sub-bottom profiles, multi-channel seismic data, and sediment cores were integrated for this reconstruction. Radiocarbon ages from sediment cores link Facies MD2 to the Last Glacial Maximum.
Use Cases
- Reconstructing ice shelf extent based on identified glacial facies.
- Analyzing sediment drift deposits to understand grounding events older than the LGM.
- Modeling meltwater discharge contributions based on evidence of sensitivity to sea-level rise.
- Mapping glacial geomorphology based on facies representing moraines, flutes, and ice-keel turbation.
Strengths
- Analysis integrates Chirp sub-bottom profiles, multi-channel seismic data, and sediment cores.
- Radiocarbon ages provide chronological constraints linking facies to the Last Glacial Maximum.
- Distinguishes four specific glacial facies and two sediment drift deposit facies.
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 specific basin study area.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Reconstruction through analyses of Chirp sub-bottom profiles integrated with multi-channel seismic data and sediment cores.
- Time Range
- Late Quaternary, including Last Glacial Maximum.
- Freshness
- Last updated 2026-04-16 15:32:56.216614; freshness should be verified.
- Geography
- George V Basin, East Antarctica.