Geoscience Australia Data provides a dataset describing Quaternary calcarenite stratigraphy on Lord Howe Island. The data likely contains lithostratigraphic divisions, cement types, and a chronology constructed from U/Th, TL, AMS 14C, and amino acid racemization dating. The record details up to 7 discrete phases of carbonate deposition during the Middle Pleistocene and oxygen isotope stages.
Use Cases
- Reconstructing paleo-coastal environments based on described eolianite and beach calcarenite units.
- Analyzing depositional phases based on the record of up to 7 discrete phases of deposition.
- Studying diagenetic processes based on described cement types like pore-filling sparite and grain-contact cements.
- Correlating stratigraphic units with global climate cycles based on oxygen isotope stage (OIS) dating.
Strengths
- Chronology is constructed from multiple dating methods: U/Th, TL, AMS 14C, and amino acid racemization.
- Description details specific lithostratigraphic formations (Searles Point and Neds Beach Formations) and their characteristics.
- The dataset provides a temporal framework linking deposits to specific oxygen isotope stages (e.g., OIS 7, 5e, 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
- Geoscience Australia Data
- Collection Method
- Field observations and laboratory dating analyses as described.
- Time Range
- Middle Pleistocene to Late Pleistocene (oxygen isotope stages 7 through 5).
- Freshness
- Last updated 2026-05-14 05:09:44.994193; freshness should be verified.
- Geography
- Lord Howe Island, Southwestern Pacific Ocean.