A Middle Pleistocene to recent chronology constructed from U/Th, TL, AMS 14C, and amino acid racemization dating of speleothems, corals, dune units, paleosols, and land snails. The dataset describes skeletal carbonate eolianite and beach calcarenite stratigraphy on Lord Howe Island, divisible into the Searles Point and Neds Beach Formations. It was published by the Australian Ocean Data Network and last updated on 2026-06-04.
Use Cases
- Reconstructing paleo-sea levels based on the record of up to 7 discrete depositional phases.
- Analyzing carbonate diagenesis based on descriptions of pore-filling sparite, microsparite, and recrystallised grains.
- Studying dune morphodynamics based on evidence of transverse and climbing dunes sourced from below the modern shoreline.
- Correlating depositional events with global climate cycles based on linkage to oxygen isotope stages 7 and 5.
Strengths
- Chronology integrates multiple dating methods: U/Th, TL, AMS 14C, and amino acid racemization.
- Stratigraphic framework divides deposits into two distinct formations with described lithologies and bounding surfaces.
- Description details specific depositional phases linked to Oxygen Isotope Stages 7, 5e, and 5a.
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 data_gov_au, focusing solely on Lord Howe Island.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Field stratigraphy and laboratory geochronological analysis.
- Time Range
- Middle Pleistocene to recent.
- Freshness
- Last updated 2026-06-04 08:17:49.434567; freshness should be verified.
- Geography
- Lord Howe Island, southwestern Pacific Ocean.