Australian Triassic Palynostratigraphy Recalibrated with CA-IDTIMS Dating
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Description
A dataset from the Australian Ocean Data Network, last updated in 2026, recalibrating Triassic palynostratigraphy to the international geologic timescale. It uses high-precision Chemical Abrasion-Isotope Dilution Thermal Ionisation Mass Spectrometry (CA-IDTIMS) dating of volcanic tuffs from Queensland, New South Wales, Tasmania, New Zealand, and Timor-Leste. This work provides numerical age constraints for biozone boundaries used in petroleum exploration.
Use Cases
Refine burial history models for petroleum systems based on updated numerical ages for palynological zones.
Correlate Australian Triassic biozones with the international geologic timescale using the provided CA-IDTIMS age constraints.
Calibrate biostratigraphic dating in petroleum exploration workflows based on the high-precision tuff dates.
Facilitate international correlation of dinocyst and spore-pollen zones using data from New Zealand and Timor-Leste.
Strengths
Employs high-precision CA-IDTIMS dating on volcanic tuffs, a method described as providing more accurate ages than inferred correlations.
Covers multiple Australian regions (Queensland, New South Wales, Tasmania) and includes international data points (New Zealand, Timor-Leste).
Builds on a previously published approach successfully used for Permian palynozone recalibration.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Row count is unknown, which may limit suitability assessment.
Data is provided in PDF format, which may require extraction and structuring for analysis.
Provenance
Source
Australian Ocean Data Network
Collection Method
Chemical Abrasion-Isotope Dilution Thermal Ionisation Mass Spectrometry (CA-IDTIMS) dating of interbedded volcanic tuffs.
Time Range
Triassic period
Freshness
Last updated 2026-06-23 00:38:18.084695; freshness should be verified.
Geography
Queensland, New South Wales, Tasmania (Australia); New Zealand; Timor-Leste.
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