South-east South Australia's stranded coastal barriers preserve a record of sea-level variations over the past 800,000 years. This dataset presents new single-aliquot regenerative-dose optically stimulated luminescence (SAR-OSL) ages for quartz extracts from these dunes, extending the tested age range to 0-250 ka. The data, sourced from Geoscience Australia, compares these ages with an existing independent chronology to validate the SAR-OSL dating method.
Use Cases
- Validating the single-aliquot regenerative-dose (SAR) procedure for quartz OSL dating based on comparisons with an independent chronology.
- Reconstructing regional sea-level variations over the past 800 ka based on the sequence of stranded coastal barriers.
- Establishing a chronological framework for coastal dune sequences like the Robe II and Robe III ranges, whose ages are reported as 60 ka and 100 ka respectively.
- Assessing the accuracy of SAR-OSL ages for older deposits (>240 ka) where error margins may differ from younger dunes.
Strengths
- Provides specific age estimates for key geomorphic features, such as the Robe II range (60 ka) and Robe III range (100 ka).
- Tests the SAR-OSL dating method over an extended and explicitly stated age range of 0-250 ka.
- Compares results with an independent chronology, allowing for method validation with stated error limits (1σ for younger dunes, 2σ for older dunes).
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 coastal sequence in south-east South Australia.
Provenance
- Source
- Geoscience Australia Data
- Collection Method
- Single-aliquot regenerative-dose optically stimulated luminescence (SAR-OSL) dating on quartz extracts from stranded coastal dunes.
- Time Range
- Covers an age range of 0-250 ka, with the broader dune sequence recording up to 800 ka.
- Freshness
- Last updated 2026-04-20 03:51:25.971259; freshness should be verified.
- Geography
- Stranded coastal barrier sequence in south-east South Australia, including the Robe and West Naracoorte ranges.