Holocene-era biosiliceous sediments sampled from a submarine valley system on the East Antarctic continental shelf. The data includes radiocarbon dates from a core on the Mac.Robertson Shelf, indicating the most intensely cross-laminated sediments were deposited between 6,000 and 3,500 years before present. The dataset is provided by Geoscience Australia Data.
Use Cases
- Reconstructing past episodes of bottom water production based on sediment cross-lamination patterns.
- Analyzing Holocene climate variability in East Antarctica based on sediment core stratigraphy.
- Correlating sediment deposition events with regional oceanographic changes based on radiocarbon dating.
Strengths
- Includes radiocarbon dates providing temporal context for sediment layers.
- Focuses on a specific geographic region: the Mac.Robertson Shelf on the East Antarctic continental shelf.
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/temporal bias inherent to data_gov_au.
Provenance
- Source
- Geoscience Australia Data
- Collection Method
- Sediment cores collected from a submarine valley system.
- Time Range
- Holocene, with specific focus on 6,000 to 3,500 years before present.
- Freshness
- Last updated 2026-05-14 03:45:46.592044; freshness should be verified.
- Geography
- East Antarctic continental shelf, specifically the Mac.Robertson Shelf.