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New insights into the Late Permian–Early Triassic depositional history in the southern Bonaparte Basin – Extended Abstract 2021 APPEA Conference

Created 02/03/2026

Updated 02/03/2026

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The upper Permian to Lower Triassic sedimentary succession in the southern Bonaparte Basin represents an extensive marginal marine depositional system that hosts several gas accumulations. Of these, the Blacktip gas field has been in production since 2009, while additional identified gas resources are under consideration for development. The sedimentary succession extends across the Permian–Triassic stratigraphic boundary, and shows a change in lithofacies changes from the carbonate dominated Dombey Formation to the siliciclastic dominated Tern and Penguin formations. The timing, duration, distribution and depositional environments of these formations in the Petrel Sub-basin and Londonderry High is the focus of this study. The sedimentary succession extending from the Dombey to the Penguin formations is interpreted to represent marginal marine facies which accumulated during a long-lasting marine transgression that extended over previous coastal and alluvial plain sediments of the Cape Hay Formation. The overlying Mairmull Formation represents the transition fully to marine deposition in the Early Triassic. Regional scale well correlations and an assessment of available biostratigraphic data suggest marginal marine deposition systems were initiated outboard before the End Permian Extinction event, subsequently migrated inboard at about the Permian–Triassic stratigraphic boundary, and continued to be deposited through the faunal and floral recovery phase as Triassic species became established. The depositional history of the basin is translated to a chronostratigraphic framework which has implications for predicting the character and distribution of petroleum system elements in the Petrel Sub-basin and Londonderry High.

Appeared in The APPEA Journal 61(2) 699-706, 2 July 2021

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Field Value
Title New insights into the Late Permian–Early Triassic depositional history in the southern Bonaparte Basin – Extended Abstract 2021 APPEA Conference
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/0298702e-8703-429c-86ba-f934ae4f7adb
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 08/04/2019
Geospatial Coverage
Map data © OpenStreetMap contributors
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      ],
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  "type": "Polygon"
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Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "New insights into the Late Permian–Early Triassic depositional history in the southern Bonaparte Basin – Extended Abstract 2021 APPEA Conference". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/new-insights-into-the-late-permianearly-triassic-depositional-history-in-the-southern-bonaparte7