Molecular fossils from a 1.64-billion-year-old basin in northern Australia reveal the ecological structure of mid-Proterozoic marine communities. The data includes biomarkers for phototrophic purple and green sulphur bacteria, indicating anoxic, sulphidic, and sulphate-poor deep waters. This evidence supports models of a long-lasting Proterozoic world with oxygen levels well below modern concentrations.
Use Cases
- Modeling ancient ocean chemistry based on biomarker evidence for anoxic and sulphidic conditions.
- Studying the co-existence of microbial communities like Chromatiaceae and Chlorobiaceae in stratified seas.
- Calibrating timelines for the rise of atmospheric oxygen using hydrocarbon biomarker data.
- Reconstructing paleoenvironments in the mid-Proterozoic interval (1.8-0.8 Gyr ago) from specific geological samples.
Strengths
- Data provides direct biomarker evidence from a specific 1.64-billion-year-old geological formation.
- Findings are tied to a major geological transition period ~1.8 billion years ago.
- Platform tags indicate the dataset is classified as 'Large Scale'.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment for quantitative analysis.
- Description metadata is limited; actual data quality requires manual inspection after download.
Provenance
- Source
- Geoscience Australia Data
- Collection Method
- Analysis of hydrocarbon biomarkers (molecular fossils) from geological samples.
- Time Range
- Mid-Proterozoic, specifically from a 1.64-billion-year-old basin.
- Freshness
- Last updated 2026-03-25 18:02:22.023954; freshness should be verified.
- Geography
- Northern Australia