Quaternary Calcarenite Stratigraphy and Coastal Carbonate Deposition on Lord Howe Island

A chronology constructed from U/Th, TL, AMS 14C, and amino acid racemization dating indicates deposition phases from the Middle Pleistocene through Oxygen Isotope Stage 5. The dataset describes the lithostratigraphy of two formations, the Searles Point and Neds Beach Formations, on Lord Howe Island in the southwestern Pacific Ocean. It was published by Geoscience Australia Data and last updated in March 2026.

Use Cases

• Modeling coastal dune depositional history based on described eolianite and beach calcarenite units.
• Analyzing paleoclimate indicators based on the record of discrete deposition phases and paleosols.
• Correlating stratigraphic units based on the constructed chronology using multiple dating methods.
• Studying diagenetic processes in carbonate rocks based on described cement types like sparite and micrite.

Strengths

• Chronology is constructed from multiple dating methods: U/Th, TL, AMS 14C, and amino acid racemization.
• Stratigraphic record covers up to 7 discrete phases of deposition from the Middle Pleistocene.
• Data is associated with a specific geographic location, Lord Howe Island in the southwestern Pacific Ocean.

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

Field observations and laboratory dating analyses as described.

Time Range

Middle Pleistocene through Oxygen Isotope Stage 5 (e.g., OIS 7, 5e, 5a).

Freshness

Last updated 2026-03 25 16:24:13.923944; freshness should be verified.

Geography

Lord Howe Island, southwestern Pacific Ocean.