Permian Tuff and Palynology Ages from the Canning Basin, Western Australia

U–Pb dating of zircons from middle Permian tuffs in the Canning Basin reveals a conflict with established spore-pollen zonation. The dataset includes an age of 267.04 ± 0.14 Ma from the M. villosa Zone, which is 1.7 million years younger than tuffs from the D. granulata Zone. This research was published by Mory et al. in the Australian Journal of Earth Sciences in 2017.

Use Cases

• Calibrating Permian spore-pollen biozones based on radiometric dates mentioned in the description
• Investigating facies-dependent biases in palynological assemblages based on the described non-marine vs. marginal-marine environment conflict
• Refining age models for the Roadian–Wordian boundary using the provided CA-IDTIMS zircon dates
• Assessing the local influence of depositional environment on fossil records as suggested by the study

Strengths

• Includes high-precision CA-IDTIMS zircon U–Pb dates, such as 267.04 ± 0.14 Ma
• Compares ages from two distinct geographic locations (350–400 km apart) and facies types
• Provides context from Ar–Ar dating of intrusive sills, indicating a Late Triassic age

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

Geoscience Australia Data

Collection Method

Chemical abrasion-isotope dilution thermal ionisation mass spectrometry (CA-IDTIMS) on zircon from tuffs, and palynological analysis.

Time Range

Middle Permian (Roadian–Wordian), specifically around 267 million years ago.

Freshness

Last updated 2026-05-14 04:05:11.294314; freshness should be verified

Geography

Canning Basin, Western Australia, with samples from Pittston SD-1 and core holes 350–400 km to the northeast.