Hydrocarbon biomarkers from a 1.64-billion-year-old basin in northern Australia reveal the structure of mid-Proterozoic marine communities. The data, published by Geoscience Australia, includes evidence for phototrophic purple and green sulphur bacteria, indicating anoxic, sulphidic, and sulphate-poor deep waters. It supports models of a prolonged Proterozoic period with ocean oxygen levels well below modern standards.
Use Cases
- Modeling ancient ocean chemistry based on biomarker evidence for anoxic and sulphidic conditions.
- Studying the ecological co-existence of microbial communities like Chromatiaceae and Chlorobiaceae in stratified seas.
- Calibrating timelines for the rise of atmospheric oxygen using the 1.8-billion-year transition marker mentioned.
- Investigating the persistence of sulphate-poor marine environments during the mid-Proterozoic interval (1.8-0.8 Gyr ago).
Strengths
- Data provides direct molecular fossil evidence from a specific 1.64-billion-year-old geological site.
- Findings are tied to a major geological transition event ~1.8 billion years ago.
- Source is Geoscience Australia Data, a national geological survey.
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
- Analysis of hydrocarbon biomarkers (molecular fossils) from geological samples.
- Time Range
- Palaeoproterozoic era, specifically 1.64 billion years ago.
- Freshness
- Last updated 2026-04-30 13:54:01.014148; freshness should be verified.
- Geography
- Northern Australia