Results from a 2023 Goldschmidt Conference study characterize uranium speciation in Cretaceous organic-rich marine sediments from Australia. The dataset likely contains analytical results from high-energy resolution fluorescence detection x-ray absorption spectroscopy on nine carbonaceous shale and two coquinite samples. The data was aggregated by the Australian Ocean Data Network.
Use Cases
- Model uranium redox dynamics in reducing marine environments based on reported U(VI) proportions.
- Improve hydrocarbon exploration models based on uranium speciation correlations with organic carbon content.
- Assess environmental risks of uranium mobilization in groundwater based on oxidation state findings.
- Study nanoscale uranium distribution patterns based on NanoSIMS association data mentioned in the description.
Strengths
- Analysis includes nine shale samples with specific total organic carbon (TOC) ranges from 5.9 to 13.4 wt%.
- Results quantify a significant proportion of uranium (~20 to 30%) as U(VI) within samples.
- Methodology employs high-resolution techniques (HERFD XAS and NanoSIMS) for speciation characterization.
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
- 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 (specifically Toolebuc Formation)
- Geography
- Eromanga Basin, Australia