Biosiliceous sediments sampled from a submarine valley system on the continental shelf of East Antarctica contain intervals of ripple cross-lamination interspersed with massively bedded units. Radiocarbon dates from a core on the Mac.Robertson Shelf indicate the most intensely cross-laminated sediments were deposited between 6,000 and 3,500 years before present. The dataset is hosted by the Australian Ocean Data Network.
Use Cases
- Analyze sedimentary deposition patterns based on intervals of ripple cross-lamination.
- Study Holocene climate events based on radiocarbon-dated sediment layers.
- Investigate bottom water production episodes based on the presence of cross-laminated sediments.
- Model submarine valley system dynamics based on sediment sample locations.
Strengths
- Contains radiocarbon dates providing a temporal anchor between 6,000 and 3,500 years BP.
- 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 bias inherent to the specific submarine valley system sampled.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Sediment sampling from a submarine valley system.
- Time Range
- Holocene, with specific focus on 6,000 to 3,500 years before present.
- Freshness
- Last updated 2026-05-05 00:50:15.078814; freshness should be verified.
- Geography
- East Antarctic continental shelf, specifically the Mac.Robertson Shelf.