Geoscience Australia - Product Database



Browse Basin

Entity ID: 22102 Compiled by: Miyazaki, S. Year: 2002 Status: Defined

Last Revised: 2014

Rank: province Type: sedimentary Subtype: polyhistory Location: WA, AC Off-shore

Synonyms: NA Symbol: NA

Minimum age: Holocene Age method: inferred, biostratigraphic correlation

Maximum age: Early Carboniferous Age method: inferred

Summary: The Early Carboniferous to Holocene Browse Basin is a large, offshore hydrocarbon-proven basin on the northwestern Australian poly-phased margin containing more than 15 km of siliciclastic non-marine and marine rocks.

Area (square kilometres): 218000
State: WA
State: AC
Minimum present water depth (m): 0
Maximum present water depth (m): 5000
Main rock types: carbonate sediments and sedimentary rocks
Main rock types: siliciclastic sediments and sedimentary rocks
Main depositional environment: marine and non-marine
Minimum sediment thickness (m): 0
Maximum sediment thickness (m): 15000
Resources: Gas
Resources: Oil
Present crustal setting: continental
Country: AUS

Parent: No data

Child Provinces: Scott Plateau, Barcoo Sub-basin, Seringapatam Sub-basin

Adjoins - Ashmore Platform, Bonaparte Basin, Canning Basin, Londonderry High, Roebuck Basin, Vulcan Sub-basin

Constituent units: Echuca Shoals Formation, Fenelon Formation, Jamieson Formation, Plover Formation, Sahul Group, Turnstone Formation, Woolaston Formation, Calypso Formation, Johnson Formation, Blina Shale, BB1 (Middle Devonian? to base Namurian.), BB2 (Base Namurian to intra-Early Permian (Artinskian).), BB3 (Intra-Early Permian to Late Permian, chronostratigraphic equivalent of Hyland Bay Fm.), BB4 (Base Early Triassic to Late Triassic, chronostratigraphic equivalent to Mt Goodwin Fm.), BB5 (Late Triassic (Carnian/Norian) to Early Jurassic (Pliensbachian).), BB6 (Pliensbachian to Aalenian), BB7 (Aalenian to intra-Callovian), BB8a (Intra-Callovian to lower Kimmeridgian), BB8b (Lower Kimmeridgian to lower Tithonian), BB8c (Upper Tithonian to lower Berriasian), BB9 (Lower Berriasian to Intra-Valanginian), BB10 (Intra-Valanginian to lower Barremian), BB11 (Lower Barremian to early Aptian), BB12a (Intra-Aptian to late Aptian/lower early Albian), BB12b (Lower early Albian to upper early Albian), BB12c (Upper early/middle Albian to intra-Cenomanian), BB13 (Turonian to lower Campanian), BB14 (Intra Campanian to late Campanian), BB15a (Late Campanian/early Maastrichtian to intra-Maastrichtian), BB15b (Intra-Maastrichtian), BB15c (Late Maastrichtian to early Tertiary?), BB16 (Intra-Paleocene to late Paleocene), BB17 (Late Paleocene/early Eocene), BB18 (Early Eocene to Late Eocene), BB19 (Early Oligocene to Late Oligocene), BB20 (Late Oligocene to middle Miocene), BB21 (Middle Miocene), BB22 (Middle Miocene to Recent), Borde Marl Member, Prudhoe Member, Puffin Member, Puffin Sandstone Member

Events: No data

Mineral Deposits: No data

Key Reference: Blevin, J.E., Struckmeyer, H.I.M., Cathro, D.L., Totterdell, J.M., Boreham, C.J., Romine, K.K., Loutit, T.S., Sayers, J. 1998, Tectonostratigraphic framework and petroleum systems of the Browse Basin North West Shelf., in Purcell, P.G. & Purcell, R.R. (eds), The sedimentary basins of Western Australia 2. Proceedings of a PESA Symposium, Perth, , 369-395 (Refid:13354)

Comments: No data

Overview: The Early Carboniferous to Holocene Browse Basin is a large, offshore basin on the northwestern Australian poly-phased margin. The basin is a proven hydrocarbon province, with major undeveloped gas/condensate fields in the outer and central basin, and minor oil discoveries on the basin's eastern margin. The Browse Basin developed during six major tectonic phases: Late Carboniferous to Early Permian extension; Late Permian to Triassic thermal subsidence; Late Triassic to Early Jurassic inversion; Early to Middle Jurassic extension; Late Jurassic to mid-Tertiary thermal subsidence; and Late Miocene inversion. Initial extension resulted in half-graben geometries and the formation of two distinct depocentres, the Caswell and Barcoo sub-basins. These depocentres contain in excess of 15 km sedimentary section, and lie in 100 to 1800 m water depth. The outer Browse Basin comprises the deep-water Scott Plateau (1500 to 5000 m water depth) and Seringapatam Sub-basin. The Carboniferous section is predominantly fluvio-deltaic, and the Permian to Lower Triassic section is mostly marine. Middle to Upper Triassic rocks include fluvial and shallow marine clastics and minor carbonates. Lower to Middle Jurassic syn-rift sediments comprise deltaic and coastal-plain clastics and coal. Widespread erosion occurred in the Callovian, with onlapping Upper Jurassic sandstones and shales providing a thin regional seal across most pre-Callovian structures. Widespread transgression commenced in the Valanginian and peaked in the Turonian, and resulted in the deposition of thick open marine claystones. The Turonian to Cenozoic section records a major progradational clastic-to-carbonate cycle. The Lower Cretaceous claystones provide a thick regional seal and contain potential oil-prone source rocks. Potential source rocks also occur in the Upper Jurassic, Middle to Lower Jurassic, Triassic and syn-rift Palaeozoic sections. Reservoir facies are best developed in sandstones of the fluvio-deltaic Middle to Lower Jurassic section, and in Cretaceous submarine fans of Berriasian, Barremian, Campanian and Maastrichtian age.

Images: No data

Other media: No data

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This report was generated on Saturday, January 31, 2015 5:43:38 AM EST.