Australian Triassic Palynostratigraphy Recalibrated with CA-IDTIMS Dating

Australian Ocean Data Network provides data from a project recalibrating Australian Triassic palynostratigraphy to the international geologic timescale using high-resolution CA-IDTIMS dating of volcanic tuffs. The dataset includes dates from tuffs across Queensland, New South Wales, Tasmania, New Zealand, and Timor-Leste. It was last updated on 2026-04-10.

Use Cases

• Recalibrating burial history models for petroleum exploration based on updated numerical ages for palynozones.
• Correlating Australian Triassic biozones with the international geologic timescale based on high-precision CA-IDTIMS dates.
• Refining chronostratigraphic understanding of Triassic petroleum systems in Australian basins like the Northern Carnarvon and Roebuck Basins.

Strengths

• Data is tied to the international geologic timescale via high-precision CA-IDTIMS dating, a method described as more direct than previous inferential approaches.
• Samples cover multiple geographic regions including Queensland, New South Wales, Tasmania, New Zealand, and Timor-Leste, which may support broader correlation.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

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 2026-04-10 18:40:12.659207; freshness should be verified.

Geography

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