U–Pb dating of zircons from middle Permian tuffs in the Canning Basin of Western Australia reveals a conflict with established spore-pollen zonation. The dataset, associated with a 2017 Australian Journal of Earth Sciences article, presents ages from chemical abrasion-isotope dilution thermal ionisation mass spectrometry (CA-IDTIMS) analysis. It includes an age of 267.04 ± 0.14 Ma from the Microbaculispora villosa Zone, which is 1.7 million years younger than tuffs from the Dulhuntyispora granulata Zone.
Use Cases
- Re-evaluating Permian spore-pollen zone ages based on high-precision CA-IDTIMS dates.
- Assessing the influence of depositional environment (non-marine vs. marginal-marine) on palynoflora assemblages.
- Calibrating regional stratigraphic correlations within the Canning Basin using conflicting age data.
- Investigating the impact of local facies on biostratigraphic zonation schemes.
Strengths
- Provides high-precision CA-IDTIMS U-Pb zircon dates with reported uncertainties (e.g., 267.04 ± 0.14 Ma).
- Directly compares radiometric ages from specific drill holes (Pittston SD-1) and core holes across a 350–400 km transect.
- Cites a peer-reviewed scientific publication (Mory et al., 2017) as its source.
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
- Mory, A. J., Crowley, J. L., Backhouse, J., Nicoll, R. S., Bryan, S. E., López Martínez, M., & Mantle, D. J. (2017). Australian Journal of Earth Sciences.
- Collection Method
- Chemical abrasion-isotope dilution thermal ionisation mass spectrometry (CA-IDTIMS) U-Pb dating of zircons from tuff beds.
- Time Range
- Middle Permian (Roadian–Wordian stages), approximately 267 million years ago.
- Freshness
- Last updated 2026-06-27 19:49:01.478740; freshness should be verified.
- Geography
- Canning Basin, Western Australia.