A 30-meter-thick sediment drift deposit discovered on the East Antarctic continental shelf indicates non-steady state bottom water production. Radiocarbon dating reveals a period of rapid deposition occurred between approximately 3,000 and 5,000 years before present. The dataset originates from the Australian Ocean Data Network and was last updated in April 2026.
Use Cases
- Modeling Antarctic bottom water production rates based on sediment deposition chronology.
- Analyzing mid-Holocene climate events based on the period of rapid deposition.
- Mapping sediment drift deposits based on location in an 850-meter deep glacial trough.
- Correlating continental shelf sediment thickness with paleoceanographic conditions.
Strengths
- Sediment deposit thickness is specified as over 30 meters.
- Radiocarbon dating provides a specific temporal window of 3,000 to 5,000 years before present.
- Geographic location is precisely described as a glacial trough off George Vth Land.
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 data_gov_au.
Provenance
- Source
- Australian Ocean Data Network
- Time Range
- Mid-Holocene, approximately 3,000 to 5,000 years before present.
- Freshness
- Last updated 2026-04-16 15:26:43.305917; freshness should be verified.
- Geography
- East Antarctic continental shelf, glacial trough off George Vth Land.