Triassic Palynostratigraphy Recalibration Using CA-IDTIMS Dating

CA-IDTIMS dating of volcanic tuffs provides high-precision numerical ages for recalibrating Australian Triassic palynological biozones. The dataset includes samples from Queensland, New South Wales, Tasmania, New Zealand, and Timor-Leste. It was published by the Australian Ocean Data Network and last updated in April 2026.

Use Cases

• Recalibrate numerical ages for Triassic palynozone boundaries using CA-IDTIMS dates from interbedded volcanic tuffs.
• Correlate Australian biozones with the international geologic timescale by linking dated tuff samples to specific spore-pollen and dinocyst zones.
• Refine burial history models for petroleum systems by applying revised biozone ages from samples across the Northern Carnarvon and Roebuck Basins.

Strengths

• Uses high-precision CA-IDTIMS dating on volcanic tuffs for accurate geochronological control.
• Covers multiple geological formations across three Australian states and two other countries for broad correlation.

Limitations

• Data format is PDF, limiting direct machine-readability and computational analysis.
• Sample size and specific row/column counts are unknown, obscuring the dataset's scale.
• Focus is on specific Triassic formations, which may limit applicability to other geological periods or regions.

Provenance

Source

Australian Ocean Data Network

Collection Method

Chemical Abrasion-Isotope Dilution Thermal Ionisation Mass Spectrometry (CA-IDTIMS) dating of volcanic tuff samples.

Time Range

Triassic Period

Freshness

null

Geography

Queensland, New South Wales, Tasmania (Australia); New Zealand; Timor-Leste.