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Geological Cross-section of the Wessel Rise, Eastern Arafura Basin

Created 17/10/2025

Updated 17/10/2025

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The eastern Arafura Basin contains a sedimentary sequence over 12 km thick, comprising Mid Proterozoic, Cambrian, Ordovician, Devonian, Cretaceous and Tertiary aged sediments. Analysis is dependant on jump correlation to the well data that occurs outside the area in the Goulburn Graben, and to the outcrop in the Wessel Islands. The thicknesses present include up to 1 km of Mesozoic, 2 to 3.5 krn of Lower Palaeozoic and over 9 km of Mid Proterozoic. The Mesozoic sequence thickens to the east, and the Palaeozoic and Proterozoic thicken to the north and northeast. Excellent source potential occurs within the Proterozoic and Lower Palaeozoic, and good potential exists for both seal and reservoir units within the Palaeozoic. Low geothermal gradients enhance the prospectivity of the Palaeozoic in this area. Very little structuring is evident in the Phanerozoic, but a major angular unconformity is present within the Mid Proterozoic sequence.

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Field Value
Title Geological Cross-section of the Wessel Rise, Eastern Arafura Basin
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/defec03a-d1e5-455b-b47c-58d16bd5cd59
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Geological Cross-section of the Wessel Rise, Eastern Arafura Basin". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/geological-cross-section-of-the-wessel-rise-eastern-arafura-basin