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Perth Basin

Entity ID: 22020 Compiled by: Bradshaw, B.E. Year: 2002 Status: Defined

Last Revised: 2013

Rank: province Type: sedimentary Subtype: polyhistory Location: WA On-shore and off-shore

Synonyms: NA Symbol: NA

Minimum age: Recent Age method: inferred, biostratigraphic correlation

Maximum age: Early Permian Age method: inferred, biostratigraphic correlation

Summary: The Permian to Recent Perth Basin is a large, onshore and offshore immature to frontier petroleum basin on the southwest Australian passive margin, containing about 15km of predominantly siliciclastic marine and nonmarine sedimentary rocks.

Attributes:
Area (square kilometres): 172000
State: WA
Minimum present water depth (m): 0
large part of basin is onshore
Maximum present water depth (m): 4500
Main rock types: siliciclastic sediments and sedimentary rocks
some coals and carbonates are also present
Main depositional environment: marine and non-marine
Maximum sediment thickness (m): 15000
Resources: Oil
Resources: Coal - undifferentiated
Resources: Gas
Country: AUS

Parent: No data

Child Provinces: Dandaragan Trough, Dongara Terrace, Vasse Shelf, Zeewyck Sub-basin, Abrolhos Sub-basin, Vlaming Sub-basin, Houtman Sub-basin, Turtle Dove Ridge

Relationships:
Adjoins - Eucla Basin, Gascoyne Sub-basin, Southern Carnarvon Basin, Yallingup Shelf

Constituent units: Porpoise Bay Formation, Haycock Marl, Challenger Formation, Wanneroo Member, Pinjar Member, Mariginiup Member, Kardinya Shale Member, Cullacabardee Sand Member, Bouvard Reefs, Arranoo Member, Amberley, Yarragadee Formation, Warnbro Group, Trealla Limestone, Toolonga Calcilutite, Tamala Limestone, South Perth Shale, Spearwood Sands, Sabina Sandstone, Poison Hill Greensand, Otorowiri Siltstone (now upgraded to Otorowiri Formation), Noondine Chert, Nangetty Formation, Muderong Shale, Miria Formation, Mardie Greensand Member, Leederville Formation, Korojon Calcarenite, Kockatea Shale, Kings Park Formation, Jandakot Member, High Cliff Sandstone, Greenough Sandstone, Gingin Chalk, Gage Sandstone, Dongara Sandstone, Coolyena Group, Cooloongup Sand, Cattamarra Coal Measures, Cardabia Calcarenite, Cadda Formation, Bringo Shale, Breton Marl, Bookara Sandstone Member, Birdrong Sandstone, Beckett Member, Ascot Formation, Carnac Member (now upgraded to Carnac Formation), Bassendean Sand, Cockleshell Gully Formation, Kojarena Sandstone, Lesueur Sandstone, Molecap Greensand, Woodada Formation, Leschenault Formation, Stockton Group, Irwin River Coal Measures, Eaton Sand, Colalura Sandstone, Becher Sand, Eneabba Formation, Tumblagooda Sandstone, Parmelia Formation (now upgraded to Parmelia Group), Kwinana Group, Wagina Sandstone, Wittecarra Sandstone, Dandaragan Sandstone, Sharks Formation, Wadjemup Formation, Lancelin Formation, Gearle Siltstone, Windalia Radiolarite, Winning Group, Holmwood Shale, Bellevue Limestone Member, Clifton Downs Member, Carynginia Formation, Osborne Formation, Beekeeper Formation, Straggler Member, Charlotte Sandstone, Mangles Member, Hawley Member, Jervoise Sandstone, Wagina Formation, Sue Group, Mosswood Formation, Willespie Formation, Ashbrook Sandstone, Redgate Coal Measures, Rosabrook Coal Measures, Woodynook Sandstone, Parmelia Group, Carnac Formation, Otorowiri Formation, Stragglers Member, Wonnerup Member, Bassendean Dune System, Muderup Beach Rock, Yalgorup Member, Mirrabooka Member, Cullens Diamictite"", Perth Formation, Preston Beach Coquina, Springhill Limestone Member, Quindalup Dunes, Yarragadee Sequence, Woodada Sequence, Holmwood Sequence, Irwin River Sequence, Nangetty Sequence, High Cliff Sequence, Coolyena Group, Lower, Coolyena Group, Upper

Events: No data

Mineral Deposits: Waroona Shoreline, Bookara, Yoganup Group/Iluka, Scott River, Eneabba area (Iluka Mid West), Talisker, Vasse River, Jangardup, Hill River, Beenup, Cooljarloo (TRONOX), Treeton, Eneabba, Capel, Green Head, Minninup Shoreline, Irwin River, Sargon, Eradu, Irwin River

Key Reference: Mory, A.J., Iasky, R.P. 1996, Stratigraphy and structure of the onshore northern Perth Basin Western Australia, Geological Survey of Western Australia. Report, 46, 102pp (Refid:23279)

Comments: No data

Overview: The Early Permian to Recent Perth Basin is a north-south trending, onshore and offshore basin extending about 1300 km along the southwestern margin of the continent and covers about 172,000 sq. km. The basin is bounded to the east by the Darling Fault and extends west to the edge of continental crust. The onshore portion is extensively explored, with 216 wells drilled (Oct 2002); it produces gas and minor oil in the north. The offshore portion is underexplored with only 27 wells and a recent commercial oil discovery at Cliff Head (Oct 2002). The basin has a maximum sediment thickness of 15,000 m with several major depocentres. These include the mostly onshore Dandaragan Trough, Bunbury Trough, Coolcalalaya Sub-basin, and offshore Vlaming Sub-basin, Houtman Sub-basin, Abrolhos Sub-basin and Zeewyck Sub-basin. Initial rifting established a series of Permian to Early Triassic depocentres for fluvial and marine siliciclastics with minor carbonates and coals in the north, while in the south fluvial siliciclastics and coals dominated. These Permian and Lower Triassic rift-sag deposits are associated with the major petroleum system in the Perth Basin. A second phase of rifting in the Late Triassic and Early Jurassic was associated with widespread fluvial and deltaic deposits, including a thick succession of siliciclastics and coals, that are overlain by Middle Jurassic marine shales in the north. These Lower to Middle Jurassic strata form another important petroleum system in the Perth Basin. Major rifting occurred in the Middle Jurassic to earliest Cretaceous, followed by a period of uplift and erosion associated with break-up. This final rift and break-up phase was associated with deposition of fluvial and marine siliciclastics that are associated with the main petroleum system in the Vlaming Sub-basin. Late Cretaceous and Tertiary sedimentation has occurred under stable passive margin conditions and produced a thin cover of marine carbonates. Petroleum traps include tilted fault blocks, anticlines, compressional rollovers and structural/stratigraphic traps.

Images: Perth Basin regional cross-section Profile 1 (53 KB), Perth Basin regional setting and cross-section location map (101 KB), Perth Basin regional cross-section Profile 2 (42 KB), Perth Basin regional cross-section Profile 3 (56 KB), Perth Basin regional cross-section Profile 4 (65 KB), Perth Basin regional cross-section Profile 5 (63 KB), Perth Basin regional cross-section Profile 6 (58 KB), Perth Basin regional cross-section Profile 7 (48 KB), Perth Basin regional cross-section Profile 8 (45 KB), Northern Perth Basin stratigraphy (80 KB), Southern Perth Basin stratigraphy (78 KB)

Other media: No data

Source Information:

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This report was generated on Saturday, November 25, 2017 6:46:28 PM EST.