Antarctic Continental Shelf Sediment Drift Deposit from the Holocene

An 850-meter deep glacial trough off George V Land contains a sediment drift deposit over 30 meters thick. Radiocarbon dating indicates a period of rapid deposition occurred between approximately 3,000 and 5,000 years ago. The data is provided by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Analyze sediment thickness and location data to model past bottom water current strength.
• Correlate radiocarbon-derived deposition dates with other paleoclimate proxy records.
• Map the geospatial extent of the drift deposit to understand continental shelf morphology.

Strengths

• Sediment deposit exceeds 30 meters in thickness, indicating a significant paleo-record.
• Radiocarbon dating provides a specific mid-Holocene time window (3,000-5,000 years BP).
• Data is sourced from a specific 850-meter deep glacial trough, providing precise location context.

Limitations

• Sample data and specific column information are unavailable.
• The dataset's size, row count, and file format details are unknown.
• The license and original author information are not provided.

Provenance

Source

Australian Ocean Data Network (via data.gov.au).

Collection Method

Marine geological survey and radiocarbon dating of sediment cores.

Time Range

Mid-Holocene, approximately 3,000 to 5,000 years before present.

Freshness

Last updated in April 2026.

Geography

Continental shelf of East Antarctica, in a glacial trough off George V Land.