Six accretional beach-ridge units in Keppel Bay, central Queensland, Australia, preserve a sediment record from the historical period back to the middle Holocene. Optically stimulated luminescence (OSL) ages indicate periods of rapid progradation approximately 1500, 1000, 450, and 230 years before present. The dataset, sourced from the Australian Ocean Data Network, provides insights into sediment accumulation linked to Fitzroy River floods and catchment land-use changes.
Use Cases
- Modeling sediment provenance changes based on the described trace-element composition of younger ridges.
- Analyzing coastal progradation rates based on OSL-dated beach-ridge units.
- Investigating links between flood recurrence intervals and sediment supply to the coast.
- Assessing the impact of historical vegetation clearing on sediment erosion and delivery.
Strengths
- Includes optically stimulated luminescence (OSL) ages pinpointing deposition periods at approximately 1500, 1000, 450, and 230 years BP.
- Quantifies the sediment store, estimating beach ridges trap the equivalent of 79% of the Fitzroy River's estimated long-term average annual bedload.
- Links sediment characteristics to specific catchment processes, such as floods with an average recurrence interval of at least 7 years.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Freshness should be verified; last updated metadata indicates a future date (2026-06-04).
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Field study and laboratory analysis (e.g., optically stimulated luminescence dating, sediment composition analysis).
- Time Range
- Middle Holocene to present, with specific OSL ages around 1500, 1000, 450, and 230 years BP.
- Freshness
- Last updated 2026-06-04 08:41:29.550813
- Geography
- Keppel Bay, central Queensland, Australia, and the Fitzroy River catchment.