A dataset from the Australian Ocean Data Network published on 2026-05-05 presents findings on the first confirmed presence of dolomite and magnesite in living crustose coralline algae Hydrolithon onkodes. The data likely contains chemical micro-analysis results quantifying mineral phases like magnesium calcite, dolomite, and magnesite within algal skeletons. This research addresses the long-standing 'Dolomite Problem' by linking modern algal mineral formation to ancient reef dolomites.
Use Cases
- Validate models of dolomite formation in modern environments based on the confirmed presence of dolomite in living algae.
- Compare mineral composition spectra between modern algal samples and fossil reef records based on the continuum of magnesium to calcium compositions described.
- Quantify potential dolomitisation rates in reef systems using the mass balance approach mentioned in the description.
- Re-evaluate previous theories of carbonate diagenesis based on the discovery of three mineral phases (magnesium calcite, dolomite, magnesite) instead of two.
Strengths
- Addresses a specific, long-standing scientific problem ('Dolomite Problem') referenced as spanning over 150 years.
- Focuses on a globally prolific coral reef species (Hydrolithon onkodes), suggesting wide relevance.
- Links modern observations to fossil records, as results are consistent with observed dolomites in fossil reefs.
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 or methodological bias inherent to data_gov_au.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Chemical micro-analysis of coralline algae skeletons, likely using a mass balance approach.
- Freshness
- Last updated 2026-05-05 00:45:14.539169; freshness should be verified.
- Geography
- Global coral reef environments, with specific reference to a raised Pleistocene reef.