Authors / CoAuthors
Grosjean, E. | Boreham, C.J. | Jones, A.T. | Jorgensen, D.C. | Mantle, D.J. | Kennard, J.M.
Abstract
The hydrocarbon generative potential and the thermal maturity of source rocks in the offshore northern Perth Basin was reassessed based on existing and new geochemical data to get a better understanding of the basin's prospectivity. The study establishes for the first time that the main source of onshore accumulations, the Late Permian-Early Triassic Hovea Member, is well developed offshore and contains organic-rich sediments of oil-prone character. This finding shatters the long-held view that the Hovea Member was either absent or of poor quality offshore and provides a new perspective on the basin's prospectivity. The source potential of the Hovea Member varies spatially with best source rocks observed in the Beagle Ridge and Central Abrolhos Sub-basin. The Late Permian Irwin River Sequence and several Jurassic Sequences are also identified as prime potential source rocks offshore, mostly for their gas-generative potential. Oil-generative potential was identified in the Middle to Late Jurassic Yarragadee Sequence and possibly in the Middle Jurassic Cadda Sequence.
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nonGeographicDataset
eCat Id
75225
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Keywords
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- External PublicationScientific Journal Paper
- ( Theme )
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- marine
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Organic Geochemistry
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- Published_Internal
Publication Date
2013-01-22T00:00:00
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geoscientificInformation
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Organic Geochemistry