Australian Triassic Palynozone Ages Recalibrated with CA-IDTIMS Dating

Australian Triassic palynostratigraphic biozones are recalibrated to the international geologic timescale using high-precision CA-IDTIMS dating of volcanic tuffs. The dataset includes samples from Queensland, New South Wales, Tasmania, New Zealand, and Timor-Leste. It is hosted by the Australian Ocean Data Network and was last updated on 2026-06-27.

Use Cases

• Recalibrating burial history models for petroleum exploration based on revised biozone ages.
• Correlating Australian Triassic biozones with the international geologic timescale based on CA-IDTIMS dates.
• Refining chronostratigraphic understanding of Triassic petroleum systems in Australian basins based on palynological data.

Strengths

• Uses high-precision CA-IDTIMS dating methods on volcanic tuffs, as described.
• Samples cover multiple Australian states and international locations (Queensland, NSW, Tasmania, New Zealand, Timor-Leste).
• Directly addresses a need for revision of Triassic biozone ages, as indicated by preliminary results.

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 complicate direct computational 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 2026-06-27 15:49:29.274213; freshness should be verified.

Geography

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