A sediment drift deposit over 30 metres thick was discovered on the East Antarctic continental shelf in an 850 metre deep glacial trough. Radiocarbon dating indicates a period of rapid deposition occurred between about 3,000 and 5,000 years before present. The dataset is provided by Geoscience Australia Data.
Use Cases
- Modeling past Antarctic bottom water production rates based on sediment deposition periods.
- Analyzing mid-Holocene climate variability based on the timing of rapid sediment deposition.
- Studying glacial trough geomorphology based on the described 850-metre depth and sediment thickness.
Strengths
- Sediment deposit thickness is specified as over 30 metres.
- The glacial trough depth is specified as 850 metres.
- Radiocarbon dating provides a specific temporal range of 3,000 to 5,000 years before present.
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
- Likely contains geological survey and radiocarbon dating results.
- Time Range
- Mid-Holocene, approximately 3,000 to 5,000 years before present.
- Freshness
- Last updated 2026-04-30 12:42:56.360845; freshness should be verified.
- Geography
- Continental shelf of East Antarctica, off George Vth Land.