Australian Triassic Palynozone Ages Calibrated with CA-IDTIMS Dating

A recalibration of Australian Triassic palynostratigraphic zones to the international geologic timescale using high-precision Chemical Abrasion-Isotope Dilution Thermal Ionisation Mass Spectrometry (CA-IDTIMS) dating of volcanic tuffs. The dataset, sourced from the Australian Ocean Data Network, provides numerical age constraints for biozone boundaries based on samples from Queensland, New South Wales, Tasmania, New Zealand, and Timor-Leste. It was last updated on 2026-04-16.

Use Cases

• Recalibrating burial history models for petroleum exploration based on revised biozone ages.
• Correlating Australian Triassic palynological zones with the international geologic timescale.
• Integrating high-precision CA-IDTIMS dates with regional biostratigraphic frameworks.

Strengths

• Uses high-precision CA-IDTIMS dating on volcanic tuffs, a method described as providing more accurate numerical ages than inference and interpolation.
• Samples cover multiple Australian states (Queensland, New South Wales, Tasmania) and include international locations (New Zealand, Timor-Leste) for correlation.
• The work builds on a previous successful recalibration of middle and late Permian palynozones using the same approach.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The primary data format is PDF, which may require extraction to be used computationally.

Provenance

Source

Australian Ocean Data Network

Collection Method

Chemical Abrasion-Isotope Dilution Thermal Ionisation Mass Spectrometry (CA-IDTIMS) dating of interbedded volcanic tuffs from targeted formations.

Time Range

Triassic period

Freshness

Last updated 2026-04-16 08:39:03.297662; freshness should be verified.

Geography

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