THE GEOLOGY OF THE MOUNT HORNER OILFIELD, PERTH BASIN, WESTERN AUSTRALIA

1988 ◽  
Vol 28 (1) ◽  
pp. 88 ◽  
Author(s):  
B.J. Warris
Keyword(s):  
Transition Zone ◽  
Western Australia ◽  
Lower Triassic ◽  
Oil Price ◽  
Fault Block ◽  
Main Fault ◽  
Coal Measures ◽  
The Town ◽  
Triassic Sandstone ◽  
Commercial Oil

The Mount Horner oilfield is located 30 km east of the town of Dongara, some 360 km north of Perth, Western Australia. It was discovered by WAPET in 1965 but it was not until 1980-81 that a further four appraisal wells were drilled on the field. One additional appraisal well was drilled in 1987.The structure consists of a tilted fault block downthrown to the east with a roll-over anticline on the downthrown side of the fault. Sandstones within the Lower Triassic Kockatea Shale produced oil in 1965 from Mount Horner No. 1 on the upthrown tilted fault block. This well was eventually plugged and abandoned due to the low productivity of the reservoirs and the then prevailing low oil price. Production also occurred in the Basal Triassic Sandstone on the downthrown side of the fault. Mount Horner Nos 4 and 5 produced from this horizon from 1984 to 1986, when they were shut in due to increasing water cut.At the top of the Lower to Middle Jurassic Cockleshell Gully Formation, a complex transition zone exists between the fluvial sandstones of the Cattamarra Coal Measures Member and the marine sediments of the Champion Bay Group. Sandstones in this transition zone produce oil from Mount Horner No. 5 which was re-completed in 1986 and from No. 7 which was drilled in 1987.There are four distinct oil pools on the Mount Horner structure. Geochemical and maturation studies have shown that the bulk of the reserves was generated from the basal part of the Kockatea Shale and has migrated up the main fault and into the Jurassic reservoirs.Recent workover and appraisal drilling programs on the field have established the first commercial oil production from Jurassic sediments in the Perth Basin. This opens up an exciting new exploration play in the northern Perth Basin.

THE STRATIGRAPHY OF THE BASAL TRIASSIC SANDSTONE, NORTH PERTH BASIN, WESTERN AUSTRALIA

1971 ◽  
Vol 11 (1) ◽  
pp. 59
Author(s):  
P. Hosemann
Keyword(s):  
Western Australia ◽  
Lower Triassic ◽  
Upper Permian ◽  
Lower Permian ◽  
Gas Field ◽  
Depositional History ◽  
History Of ◽  
Near Shore ◽  
Strand Line ◽  
Triassic Sandstone

The Basal Triassic Sandstone is the basal member of the Lower Triassic Kockatea Shale. It is widely distributed adjacent to, and on the Precambrian Greenough Block in the northern Perth Basin, Western Australia. This member is lowermost Lower Triassic in age in the subsurface of the Don-gara gas field. In outcrop on the Greenough Block, the member is represented by a thin basal conglomerate, conformably overlain by upper Lower Triassic Kockatea Shale. In this stratigraphic study, detailed well-to-well correlations and lithologic studies were integrated to reconstruct the depositional history of the interval encompassing the Basal Triassic Sandstone. This sandstone is a composite of near-shore marine, and strand line accumulations deposited around the flanks and on the Greenough Block during a Lower Triassic marine transgression. The sandstone bodies were deposited on a drowned, topography of low relief, on progressively truncated Permian formations and Precambrian basement. The topography was formed following uplift and tilting of the Greenough Block and the overlying Lower Permian formations during mild Upper Permian tectonism.

THE STRATIGRAPHY OF THE PERMIAN OF THE NORTHERN PERTH BASIN, WESTERN AUSTRALIA

1966 ◽  
Vol 6 (1) ◽  
pp. 100
Author(s):  
M. H. Johnstone ◽  
S. P. Willmott
Keyword(s):  
Western Australia ◽  
West Coast ◽  
Oil And Gas ◽  
Lower Triassic ◽  
Lower Permian ◽  
Glacial Cycle ◽  
The West ◽  
Maximum Width ◽  
Northern Margin ◽  
Coal Measures

The Perth Basin is a narrow, deep graben flanking the lower 400 miles of the west coast of Western Australia. It attains a maximum width of 60 miles and may contain more than 40,000 feet of sediments.Permian rocks crop out around the northern margin of the basin, between the Greenough Precambrian Inlier on the west and the Darling Fault on the east. Bores near the northern margin of the basin and down the west coast for some 120 miles south of Geraldton have encountered Permian rocks. Because of the limited nature of the outcrop, most of our information concerning variations of stratigraphy within the Permian comes from these bores.As in other basins in Australia, the Permian sedimentation in the Perth Basin started with a cycle of intense glaciation. Two units were deposited: the lower one is a submarine tillite consisting of boulders set in a sandstone and siltstone matrix; the upper unit is a fossiliferous marine shale. The thickest development of these units is adjacent to the eastern boundary fault of the basin. They thin rapidly to the west by sedimentary onlap on to the Beagle Ridge.The glacial cycle is followed by a continual cycle in which coal measures predominate. This unit shows a remarkable constancy of thickness, indicating very stable tectonic conditions during its deposition.The coal measures are followed by a monotonous marine siltstone unit which completes the Lower Permian (Artinskian) sequence in this basin.After a hiatus in which both tectonism (faulting and tilting) and erosion occurred, a series of estuarine lakes developed in uppermost Permian times, and the Wagina Sandstone was deposited. These rather restricted lakes were then followed by the more widespread Lower Triassic transgression in which the Kockatea Shale blankets most of the Permian.Significant signs of oil are seen in several of the Permian units-oil in the Coal Measures, oil and gas in the overlying marine strafes, and oil and gas associated with the Wagina Sandstone. Thus the Permian ranks as one of the best potential source and reservoir sequences for hydrocarbons in the Perth Basin.

scholarly journals IV.—On the Geology of the Nottingham District

1874 ◽  
Vol 1 (7) ◽  
pp. 314-319 ◽  
Author(s):  
A. Irving
Keyword(s):  
Short Distance ◽  
Coal Measures ◽  
The Town

A Glance at the map stows that within a short distance of the town of Nottingham there are Coal-measures, Permian, Bunter, keuper, and Lias rocks. A paper therefore on the district must of necessity be somewhat lengthy, but perhaps of all the greater interest as dealing with the border-land of the Palæozoic and Mesozoic epochs. The generally supposed unconformability between the Permian and Triassic rocks does not appear to exist in this area; while that between the Permian and the Coal-measures is very considerable.

John Norman Collie 1859-1942

1943 ◽  
Vol 4 (12) ◽  
pp. 329-356 ◽  
Keyword(s):  
High School ◽  
Western Australia ◽  
The Other ◽  
Napoleonic Wars ◽  
Royal Navy ◽  
The Third ◽  
University College ◽  
University College London ◽  
The One ◽  
The Town

Born on 10 September 1859, John Norman Collie was the second son of John Collie and the grandson of George Collie, an Aberdeen merchant, whose ancestors came from Ireland in the days of Cromwell. George Collie married Margaret Roy, the daughter of Captain Roy McGregor. George Collie’s brother was a surgeon in the Royal Navy during the Napoleonic wars. He served on the warships which annexed Western Australia. He discovered the Collie river, and the town of Collie, also named after him, celebrated its centenary in 1935 when the Premier of Western Australia unveiled a statue to him. Dr Collie wrote to his brother George a number of letters in which he described his experiences in Western Australia, and these letters, as the result of negotiations by Professor N. T. M. Wilsmore, himself a native of Perth, W. A.,and a student and later a lecturer at University College, London, are now in the archives of the cities of Perth and Canberra. John Collie married Selina Mary, the third daughter of Henry Winkworth, the son of the Rev. Henry Winkworth who was the vicar of St Saviour’s, Southwark. Henry Winkwrorth married Miss Dickenson of Kentish origin and had by her four daughters, Catherine, Susanna, Selina Mary and Alice, and two sons. Catherine was the author of Lyra Germanica , and Susanna wrote a life of Catherine. Susanna worked for many years in Clifton and Bristol on the provision of model dwellings for workpeople and was in fact one of the pioneers in this field. John Collie and his wife had four sons, the two eldest being Henry and John Norman, and one daughter, Susan Margaret, who was their third child and for many years Head of the Bedford High School for Girls. The foregoing epitome of John Norman’s ancestry is of considerable interest. On the one side he had Highland blood in him and from the other he inherited the Winkworth personality which revealed itself in so many members of that family. To this may be attributed the outstanding personality with which he was unquestionably endowed.

scholarly journals The northern river shark Glyphis sp. C (Carcharhinidae) discovered in Western Australia

Zootaxa ◽  
2004 ◽  
Vol 685 (1) ◽  
pp. 1 ◽  
Author(s):  
DEAN C. THORBURN ◽  
DAVID L. MORGAN
Keyword(s):  
Papua New Guinea ◽  
Western Australia ◽  
Gene Pool ◽  
Northern Territory ◽  
Pectoral Fins ◽  
Northern River ◽  
Count Range ◽  
High Incidence ◽  
Mean Diameter ◽  
The Town

Seven specimens of Glyphis sp. C were collected from macrotidal mangrove systems near the town of Derby in the Kimberley region of Western Australia, which represents the first capture in this state. The five males and two females ranged in length from 906 to 1418 mm TL, weighed between 5150 and 18640 g and had a vertebral count range outside that previously reported for the species, i.e. 140 151 cf 147 148. The unusually high incidence of fused vertebrae and spinal deformation may suggest a small gene pool in this population. Previous occurrences of this species were restricted to rivers in the Northern Territory (Australia) and Papua New Guinea. The presence of a small eye (mean diameter 0.87% of total length), large dorsal and pectoral fins, and well defined sensory ampullae may be reflective of living in an environment subjected to extreme turbidity and flows.

Chromosome, morphometric and breeding system studies in the Stylidium caricifolium species complex (Stylidiaceae)

1981 ◽  
Vol 29 (4) ◽  
pp. 397 ◽  
Author(s):  
DJ Coates
Keyword(s):  
Transition Zone ◽  
Western Australia ◽  
Breeding System ◽  
Species Complex ◽  
Leaf Morphology ◽  
Evolutionary Relationships ◽  
Geographic Patterns ◽  
Floral Characters ◽  
Ecological Transition

Evolutionary relationships among the five species in the Stylidium caricifolium species complex were investigated by chromosome, morphometric and breeding system studies. Marked interspecific chromosome differences were found between all five species and chromosomally polymorphic individuals detected in populations of S. affine, S. caricifolium and S, sp. 2. In addition, chromosomal and morphological intermediates between S. affine and S. caricifolium were found in a region corresponding to an ecological transition zone between the wheat belt and Darling Scarp vegetation systems in southern Western Australia. The origin of these transition-zone forms, although conjectural at this stage, is discussed in the light of information available from chromosome studies. Morphometric studies demonstrated that S. affine, S. sp. 1 and S. sp. 2 can readily be distinguished from each other and from S. nungarinense and S. caricifolium. The last two species, although not detectably different in the floral characters measured, can be separated on leaf morphology. Breeding system studies suggested that all species with the exception of S. affine and S. caricifolium are effectively isolated from each other reproductively. The possible significance of chromosome repatterning and eco-geographic patterns in the evolution of the S. caricifolium species complex is discussed.

The Cygnus Field, Blocks 44/11a and 44/12a, UK North Sea

2020 ◽  
Vol 52 (1) ◽  
pp. 151-162 ◽  
Author(s):  
Ian Dredge ◽  
Gary Marsden
Keyword(s):  
North Sea ◽  
Horizontal Wells ◽  
Third Party ◽  
Production Well ◽  
Field Development ◽  
Fault Block ◽  
Main Fault ◽  
Sandstone Formation ◽  
The Uk ◽  
Gas Bearing

AbstractThe Cygnus Field is located in Blocks 44/11a and 44/12a of the UK Southern North Sea. The field was first discovered in 1988 as a tight lower Leman Sandstone Formation gas discovery by well 44/12- 1. After the licences had sat idle for several years, GDF Britain (now Neptune E&P UK Ltd) appraised the field from 2006 to 2010. During the appraisal phase, the lower Leman Sandstone was found to be of better quality than first discovered and the gas-bearing lower Ketch Member reservoir was also encountered. The field development was sanctioned in 2012.The field has been developed from two wellhead platforms targeting Leman Sandstone and Ketch Member reservoirs. Five main fault blocks have been developed, with two wells in each fault block planned in the field development plan. The wells are long horizontal wells completed with stand-alone sand screens. At the time of writing, the production plateau is 320 MMscfgd (266 MMscfgd when third-party constraints apply), producing from nine wells with the final production well to be drilled.

scholarly journals Colonial Expressions of Identity in Funerals, Cemeteries, and Funerary Monuments of Nineteenth-Century Perth, Western Australia

Genealogy ◽  
2018 ◽  
Vol 2 (3) ◽  
pp. 23 ◽  
Author(s):  
Sandra F. Hayward
Keyword(s):  
Nineteenth Century ◽  
Western Australia ◽  
Colonial Period ◽  
Jewish Communities ◽  
Funerary Monuments ◽  
Gendered Identity ◽  
The Town

A general cemetery was established in 1829–1830 for the town of Perth, Western Australia, and during the rest of the nineteenth century, other cemeteries were added to the complex to cater for various Christian denominations as well as for Chinese and Jewish communities. In all, seven contiguous cemeteries were used over the colonial period in Perth. By 1899, when the cemetery complex was closed, approximately ten thousand people were buried there. The deceased or their bereaved loved ones chose funerals, epitaphs, burial locations, and funerary monuments to express social, ethnic, religious, familial, and gendered identity. These expressions of identity provide more information than just birth and death dates for genealogists and family historians as to what was important to the deceased and their family. In the first half of the nineteenth century, identities were dominantly related to family, whereas later in the century, identities included religion, ethnicity, and achievements within the colony of Western Australia. Some expressions of identity in Perth contrast with those found in other Australian colonies, especially in regard to the use and types of religious crosses in the Christian denominations.

REGIONAL PHOTOGEOLOGY OF THE IPSWICH BASIN-ESK TROUGH, QUEENSLAND

1966 ◽  
Vol 6 (1) ◽  
pp. 121
Author(s):  
Jon T. Jorgenson ◽  
Robert H. Barton
Keyword(s):  
Surface Structure ◽  
The South ◽  
The West ◽  
Fault Block ◽  
Main Emphasis ◽  
Jurassic Rock ◽  
Tectonic Framework ◽  
The Town ◽  
Tectonic Line ◽  
Jurassic Sequence

The Ipswich Basin-Esk Trough Area of south-eastern Queensland was mapped photogeologically with the main emphasis on extending a uniform Jurassic sequence from the Surat Basin located to the west into the area under discussion. The photogeologic units are correlated with the Jurassic Hutton, Evergreen and Precipice formations. The remaining photogeologic units within the Ipswich Basin-Esk Trough Area are correlated with the previously established stratigraphic nomenclature.The structural interpretation agrees regionally with the basic tectonic framework as summarised by Hill (1961). The northern part of the Esk Trough is interpreted to be a westward tilted, compressed fault block. The resulting regional surface structure of the Esk Trough consists of two main synclines separated by a fault zone.The Triassic Esk Trough is unconformably overlapped to the south by the Jurassic rock sequence of the Ipswich Basin. The nature and southern extent of the Esk Trough under the Ipswich Basin is not known. The steeply dipping Mesozoic sequence located immediately west of the town of Ipswich and the asymmetric, faulted, South Moreton Anticline are both on trend with the eastern boundary of the Esk Trough and probably are tectonically related to it. An alignment of igneous intrusives in the south-western part of the Ipswich Basin may be controlled by a southerly trending surface extension of the tectonic line forming the west edge of the Esk Trough.

Sign in / Sign up

Export Citation Format

Share Document