High-energy resolution fluorescence detection x-ray absorption spectroscopy characterized uranium speciation in 11 sediment samples from the Cretaceous Toolebuc Formation. Results suggest 20 to 30% of uranium in marine black shales exists as U(VI) despite anoxic conditions, with variation at the nanoscale. The dataset was presented at the 2023 Goldschmidt Conference in Lyon, France.
Use Cases
- Model uranium redox behavior in organic-rich shales based on U(VI) proportion data.
- Correlate uranium speciation with total organic carbon content for hydrocarbon exploration.
- Assess nanoscale uranium distribution patterns associated with organic matter or sulphide minerals.
- Evaluate uranium mobilization potential in groundwater based on oxidation state findings.
Strengths
- Uses high-energy resolution fluorescence detection x-ray absorption spectroscopy for precise speciation.
- Includes 11 characterized samples with total organic carbon content ranging from 0.3 to 13.4 wt%.
- Quantifies a significant proportion of U(VI) (20-30%) in reducing black shale environments.
Limitations
- Description metadata is limited; actual data quality requires manual inspection after download.
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- High-energy resolution fluorescence detection x-ray absorption spectroscopy and nanoscale secondary ion mass spectrometry.
- Time Range
- Cretaceous period
- Freshness
- Last updated 2026-06-16 18:39:15.329704; freshness should be verified.
- Geography
- Toolebuc Formation, Eromanga Basin, Australia