Nine carbonaceous shale samples with total organic carbon content ranging from 5.9 to 13.4 wt% were analyzed. The dataset characterizes uranium speciation in Cretaceous Toolebuc Formation sediments using high-energy resolution fluorescence detection x-ray absorption spectroscopy. Results suggest a significant proportion of uranium (~20 to 30%) exists as U(VI) in these organic-rich shales.
Use Cases
- Model uranium redox state variability based on total organic carbon content and sediment type
- Analyze uranium distribution associations based on organic matter matrix or sulfide minerals mentioned in the description
- Compare uranium speciation between carbonaceous shales and coquinite samples
- Investigate implications for uranium fixation processes during sedimentation based on oxidation state proportions
Strengths
- Specific uranium oxidation state proportions (~20 to 30% U(VI)) are reported
- Total organic carbon content for samples is quantified (5.9 to 13.4 wt%)
- Analysis includes comparison samples (coquinite with TOC 0.3 and 2.4 wt%)
Limitations
- 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 (HERFD) x-ray absorption spectroscopy and nanoscale secondary ion mass spectrometry (NanoSIMS)
- Time Range
- Cretaceous period
- Freshness
- Last updated 2026-04-16 16:30:24.826659; freshness should be verified
- Geography
- Toolebuc Formation, Eromanga Basin, Australia