Stranded Beach Dune Sequence in South-east South Australia with SAR-OSL Ages

A sequence of stranded coastal barriers in south-east South Australia preserves a record of sea-level variations over the past 800,000 years. This dataset from Geoscience Australia 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 results show the Robe II range is 60 ka and Robe III is 100 ka old, with ages increasing monotonically to the West Naracoorte range.

Use Cases

• Validate single-aliquot regenerative-dose (SAR) OSL dating procedures based on comparisons with an existing independent chronology.
• Reconstruct past sea-level variations based on the chronology of stranded coastal barriers over 800 ka.
• Calibrate luminescence dating methods for older sediments based on the dataset's extended age range of 0-250 ka.
• Study coastal dune system evolution in South Australia based on the dated sequence from Robe II to West Naracoorte.

Strengths

• Compares SAR-OSL ages with an independent chronology over an extended age range of 0-250 ka.
• Provides specific age estimates for geological features, such as the Robe II range (60 ka) and Robe III (100 ka).
• Data originates from Geoscience Australia, a national geological survey organization.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Single-aliquot regenerative-dose (SAR) optically stimulated luminescence (OSL) dating on quartz extracts from stranded coastal dunes.

Time Range

Covers past 800,000 years, with specific testing range of 0-250 ka.

Freshness

Last updated 2026-04-30 12:59:30.058862; freshness should be verified.

Geography

Stranded coastal barriers in south-east South Australia, including Robe and Naracoorte ranges.