THE GEOLOGICAL AND STRUCTURAL FRAMEWORK OF THE OFFSHORE KIMBERLEY BLOCK (BROWSE BASIN) AREA, WESTERN AUSTRALIA

1971 ◽  
Vol 11 (1) ◽  
pp. 64 ◽  
Author(s):  
J. W. Halse ◽  
J. D. Hayes
Keyword(s):  
Western Australia ◽  
Sedimentary Basin ◽  
Petroleum Exploration ◽  
The South ◽  
Canning Basin ◽  
The North ◽  
Structural Framework ◽  
Block Area ◽  
Basin Area

The Offshore Kimberley Block area is mainly held under petroleum exploration permit by a group of companies of which B.O.C. of Australia Ltd. is operator. Exploration activities of the Group have shown the area to be a distinctive and separate major sedimentary basin, which it is proposed to term the Browse Basin. The basin is separated from the Bonaparte Gulf Basin in the north by the Londonderry Arch, and from the Offshore Canning Basin to the south by the Leveque Platform. It covers an area of over 60,000 square miles.

Uncovering the Canning Basin: a new comprehensive SEEBASE® model

2018 ◽  
Vol 58 (2) ◽  
pp. 793
Author(s):  
Karen Connors ◽  
Cedric Jorand ◽  
Peter Haines ◽  
Yijie Zhan ◽  
Lynn Pryer
Keyword(s):  
Western Australia ◽  
Potential Field ◽  
Field Data ◽  
Regional Scale ◽  
Structural Evolution ◽  
Potential Field Data ◽  
Canning Basin ◽  
The North ◽  
Wide Range ◽  
Order Of Magnitude

A new regional scale SEEBASE® model has been produced for the intracratonic Canning Basin, located in the north of Western Australia. The 2017 Canning Basin SEEBASE model is more than an order of magnitude higher resolution than the 2005 OZ SEEBASE version — the average resolution is ~1 : 1 M scale with higher resolution in areas of shallow basement with 2D seismic coverage — such as the Broome Platform and Barbwire Terrace. Post-2005 acquisition of potential field, seismic and well data in the Canning Basin by the Geological Survey of Western Australia (GSWA), Geoscience Australia and industry provided an excellent opportunity to upgrade the SEEBASE depth-to-basement model in 2017. The SEEBASE methodology focuses on a regional understanding of basement, using potential field data to interpret basement terranes, depth-to-basement (SEEBASE), regional structural geology and basement composition. The project involved extensive potential field processing and enhancement and compilation of a wide range of datasets. Integrated interpretation of the potential field data with seismic and well analysis has proven quite powerful and illustrates the strong basement control on the extent and location of basin elements. The project has reassessed the structural evolution of the basin, identified and mapped major structures and produced fault-event maps for key tectonic events. In addition, interpretative maps of basement terranes, depth-to-Moho, basement thickness, basement composition and total sediment thickness have been used to calculate a basin-wide map of basement-derived heat flow. The 2017 Canning Basin SEEBASE is the first public update of the widely used 2005 OZ SEEBASE. All the data and interpretations are available from the GSWA as a report and integrated ArcGIS project, which together provide an excellent summary of the key features within the Canning Basin that will aid hydrocarbon and mineral explorers in the region.

THE COOPER'S CREEK BASIN

1966 ◽  
Vol 6 (1) ◽  
pp. 71 ◽  
Author(s):  
Adrian Kapel
Keyword(s):  
Sedimentary Basin ◽  
The South ◽  
The North ◽  
Geophysical Surveys ◽  
Lower Palaeozoic ◽  
Basement Ridge

Results of past surface and subsurface geological and geophysical surveys indicate that the Cooper's Creek area has been a sedimentary basin from Lower Palaeozoic time to at least the beginning of Cretaceous time.The Cooper's Creek Basin is bounded to the east by the Canaway Ridge, to the south by a basement ridge that runs from Naryilco to Kopperamanna, to the north by a folded trend that runs from Warbreccan to Kopperamanna.Sediments from Cambrian to Recent age have been encountered in wells drilled by Delhi-Santos. It is postulated that the present basin originated in post-Siluro-Devonian time after the Bowning orogeny.Physiographically the axis of the basin is reflected by the Cooper's Creek.

Talitrid amphipods from ocean beaches along the New South Wales coast of Australia (Amphipoda, Talitridae)

Zootaxa ◽  
2012 ◽  
Vol 3575 (1) ◽  
pp. 1 ◽  
Author(s):  
J. K. LOWRY
Keyword(s):  
Western Australia ◽  
New Genus ◽  
New South ◽  
New South Wales ◽  
Original Description ◽  
North Coast ◽  
The South ◽  
Shark Bay ◽  
The North ◽  
South Wales

The sand-hopper Bellorchestia mariae sp. nov. is described from Honeymoon Bay on the north coast of Jervis Bay, NewSouth Wales, Australia. It is the sister species of B. richardsoni Serejo & Lowry, 2008 and appears to have a limited dis-tribution from about Narrawallee in the south to northern Jervis Bay. The distribution of B. richardsoni Serejo & Lowry,2008 is extended from Point Ricardo, Victoria, northwards to Ulladulla on the New South Wales coast. A new synonymyis proposed for the sand-hopper Notorchestia quadrimana (Dana, 1852) which includes N. novaehollandiae (1899) andN. lobata Serejo & Lowry, 2008. It is considered to be a wide-ranging species from Shark Bay in Western Australia aroundthe south coast to at least Maitland Bay in central New South Wales. The beach-hopper Orchestia dispar Dana, 1852 isdescribed from Valla Beach in northern New South Wales and moved to the new genus Vallorchestia. This is the first re-cord of V. dispar since its original description 160 years ago. The beach-hopper Platorchestia smithi sp. nov. is describedfrom Brooms Head, New South Wales, Australia. It is common on ocean beaches from Bendalong in the south to Ballina in northern New South Wales. South of Bendalong beach-hoppers on ocean beaches appear to be absent.

PALEOSEISMOLOGICAL INVESTIGATIONS AT THE FRONT OF THE EASTERN SOUTHERN ALPS (NE Italy)

2020 ◽  
Author(s):  
Giulia Patricelli ◽  
Maria Eliana Poli ◽  
Giovanni Paiero ◽  
Giovanni Monegato ◽  
Francesco Marinoni ◽  
...  
Keyword(s):  
Damage Zone ◽  
Southern Alps ◽  
Alluvial Fan ◽  
The South ◽  
Active Deformation ◽  
The North ◽  
Ne Italy ◽  
Structural Framework ◽  
Accademia Dei Lincei ◽  
The Village

<p>In the framework of the III level Seismic Microzonation of the Pieve del Grappa municipality (Treviso, NE Italy), three paleoseismological trenches were dug, in order to investigate activity and capacity of the Crespano del Grappa backthrust.</p><p>The study area is located in the Veneto foothills, where the Plio-Quaternary external front of the Eastern Southern Alps (Castellarin and Cantelli, 2000) presently propagates with a 2-3 mm/y velocity towards the south (Serpelloni et al., 2016). The external front is composed of a series of arcuated WSW-ENE striking, S verging structures (Galadini et al, 2005). Moreover, the area is characterized by a medium-to-low seismicity with only one M>6 earthquake during the last millennium: the 1695 Asolo event, Mw 6.45 (Rovida et al., 2016).</p><p>Regarding the structural framework, the study area is located between the Bassano-Vittorio Veneto Thrust to the north and the Bassano-Cornuda Thrust to the south. The investigated tectonic structure, i.e. the Bassano-Cornuda backthrust, is a N-verging E-W striking reverse structure. Moving from east to the west, it widely crops out near the Castelcucco village, causing a hundred meters displacement in the Miocene Molasse (Braga, 1970). In particular in Crespano village the thrust is responsible of an about 10 m vertical throw in the Quaternary alluvial conglomerates of Lastego river (Parinetto, 1987). Because of the urbanization, the paleoseismological trenches were realized at the eastern (Col Canil) and western (San Vito) borders of the village. In the former case, the trench cut through thick colluvial deposits that probably buried an abandoned valley. Differently, the second and the third trenches affected wide coalescent LGM alluvial fans, which border the southern slope of Mt. Grappa.</p><p>The results testify an intense Pleistocene-Holocene deformation of the Crespano del Grappa backthrust. Particularly, active deformation evidence deals with:</p><ul><li>back-tilting of the Holocene colluvial units;</li> <li>pronounced polyphasic liquefaction episodes, locally completely altering the sedimentary structures of colluvial units;</li> <li>a wide damage zone in the proximity of the morphological scarp and associated with the peak of the induced polarization. This observation testifies that the Crespano del Grappa backthrust reached the surface and displaced topography in the past, probably at the occurrence of one or more events which generated the paleoliquefaction effects;</li> <li>the 3-4 m displacement of the LGM alluvial fan deposits.</li> </ul><p>Concerning the age of the deformation, the dating of the involved units suggests a post LGM activation, probably recent-to-historical.</p><p> </p><p>REFERENCES</p><p>Braga GP, 1970. Rendiconti Fisici dell’Accademia dei Lincei, serie 8, 48(4): 451-455.</p><p>Castellarin A. and Cantelli L., 2000. Journal of Geodynamics. DOI: 10.1016/S0264-3707(99)00036-8.</p><p>Galadini et al., 2005. Geophysical Journal International. DOI: 10.1111/j.1365-246X.2005.02571.x.</p><p>Parinetto A., 1987. Aspetti morfotettonici del versante meridionale del Grappa e delle colline antistanti. Unpublished degree thesis. University of Padova, Italy.</p><p>Rovida et al., 2016. DOI: http://doi.org/10.6092/INGV.IT-CPTI15.</p><p>Serpelloni et al., 2016. Tectonophysics, https://doi.org/10.1016/j.tecto.2016.09.026.</p>

scholarly journals Deep structure of the Porcupine Basin from wide-angle seismic data

2016 ◽  
Vol 8 (1) ◽  
pp. 199-209 ◽  
Author(s):  
Louise Watremez ◽  
Manel Prada ◽  
Tim Minshull ◽  
Brian O'Reilly ◽  
Chen Chen ◽  
...  
Keyword(s):  
North Atlantic Ocean ◽  
Deep Structure ◽  
Petroleum Exploration ◽  
Wide Angle ◽  
The South ◽  
Seismic Profiles ◽  
The North ◽  
Volcanic Feature ◽  
Porcupine Basin ◽  
Mud Diapir

AbstractThe Porcupine Basin, part of the frontier petroleum exploration province west of Ireland, has an extended history that commenced prior to the opening of the North Atlantic Ocean. Lithospheric stretching factors have previously been estimated to increase from <2 in the north to >6 in the south of the basin. Thus, it is an ideal location to study the processes leading to hyper-extension on continental margins. The Porcupine Median Ridge (PMR) is located in the south of the basin and has been alternatively interpreted as a volcanic feature, a serpentinite mud diapir or a tilted block of continental crust. Each of these interpretations has different implications for the thermal history of the basin. We present results from travel-time tomographic modelling of two approximately 300 km-long wide-angle seismic profiles across the northern and southern parts of the basin. Our results show: (1) the geometry of the crust, with maximum crustal stretching factors of up to 6 and 10 along the northern and southern profiles, respectively; (2) asymmetry of the basin structures, suggesting some simple shear during extension; (3) low velocities beneath the Moho that could represent either partially serpentinized mantle or mafic under-plating; and (4) a possible igneous composition of the PMR.

PETROLEUM IN WESTERN AUSTRALIA: A REVIEW OF EXPLORATION, PRODUCTION, AND FUTURE PROSPECTS

1975 ◽  
Vol 15 (2) ◽  
pp. 72
Author(s):  
Phillip E. Playford
Keyword(s):  
Western Australia ◽  
Gas Production ◽  
Oil Field ◽  
Petroleum Exploration ◽  
Oil Reserves ◽  
The North ◽  
Recent Success ◽  
Northern Carnarvon Basin ◽  
Exploration Activity ◽  
Carnarvon Basin

Modern petroleum exploration has been in progress in Western Australia since 1952, and has been concentrated mainly in the Perth, Carnarvon, Canning, and Bonaparte Gulf Basins. Two large onshore fields have been developed, the Barrow Island oilfield in the Carnarvon Basin (found in 1964), and the Dongara gasfield in the Perth Basin (found in 1966). Small gasfields have also been developed at Mondarra, Gingin, and Walyering in the Perth Basin, but Gingin and Walyering are now virtually depleted.Major gas-condensate fields have been found offshore. These are the North Rankin, Goodwyn, West Tryal Rocks, and Angel fields in the northern Carnarvon Basin, and the Scott Reef field in the Browse Basin. They were found during the period 1971 to 1973, but none has yet been developed.Since 1968 the accent has been on offshore exploration, and this reached a peak in 1972. Exploration activity, both onshore and offshore, is currently declining, owing to the lack of recent success and the unfavourable exploration climate prevailing in Australia today.Original reserves in the Dongara gasfield amounted to about 13 billion cubic metres, of which nearly 2.1 billion have now been produced. Current gas production from Dongara and the small adjoining Mondarra field is about 2.2 million cubic metres per day, and production will continue at about this rate until 1981, after which it will begin declining. Production will fall steeply in 1987, when existing contracts expire. At that time about 90% of the reserves will have been depleted.The original in-place reserves of the Barrow Island oil-field amounted to some 750 million barrels, and it is expected that about 240 million will be recovered. Current oil production is around 37,000 barrels per day, compared with the peak of 48.000 barrels per day reached in 1970. Nearly 43% of the original reserves have now been produced.Total reserves of the major fields in the offshore northern Car-narvon Basin (in the proved and probable categories) are more than 345 billion cubic metres of gas and 320 million barrels of condensate. Of these amounts more than 220 billion cubic metres of gas and 180 million barrels of condensate are in the North Rankin field, which is the largest gasfield in Australia and is a giant by world standards. This is followed by Goodwyn (about 65 billion cubic metres of gas and 90 million barrels of condensate), West Tryal Rocks (more than 30 billion cubic metres of gas) and Angel (about 30 billion cubic metres of gas and 50 million barrels of condensate).Further drilling will be required before gas reserves of the Scott Reef field can be estimated, but the results of the first well and the size of the structure indicate that they could be very large. It is clear that future exploration in Western Australia will be mainly concentrated offshore, in the Carnarvon, Browse, Bonaparte Gulf, and Perth Basins. However, there are still some prospective onshore areas in the Perth, Carnarvon, and Canning Basins.The chances of finding giant oilfields in Western Australia have declined markedly in recent years, as It seems that the generative sequences are mainly gas prone, and most of the obvious structures have now been drilled. However, the prospects are good for further large gas discoveries, and there is a reasonable chance that significant oil reserves will also be found.

scholarly journals Hydrocarbon source rock sampling in Peary Land 1980

1981 ◽  
Vol 106 ◽  
pp. 99-103
Author(s):  
F Rolle
Keyword(s):  
Sedimentary Basin ◽  
Carbonate Platform ◽  
Early Carboniferous ◽  
Early Cambrian ◽  
The South ◽  
Hydrocarbon Source Rock ◽  
The North ◽  
Lower Palaeozoic ◽  
North Greenland ◽  
Land Region

The Peary Land region in North Greenland (fig. 31) contains a sequence of Lower Palaeozoic sediments which is probably more than 4 km thick (Dawes, 1976; Christie & Peel, 1977; Hurst, 1979; Christie & Ineson, 1979; Hurst & Surlyk, 1980; Ineson & Peel, 1980; Surlyk, Hurst & Bjerreskov, 1980). From Early Cambrian to Wenlock the area was divided into a northern turbidite trough and a southern, mainly carbonate platform (fig. 32). The platform seems to have undergone several phases of backstepping to the south, accompanied by expansion of the turbidite basin (fig. 32) (Surlyk et al., 1980). The region was affected by an orogeny of assumed Devonian - early Carboniferous age (Dawes, 1976). Deformation is most intense in northern Johannes V. Jensen Land (fig. 31), where an amphibolite facies is attained along the north eoast (Dawes & Soper, 1973) and decreases southwards, leaving the platform earbonates virtually undeformed. A separate, strongly block-faulted sedimentary basin, the Wandel Sea Basin is present in eastern Peary Land and farther to the south-east (Dawes & Soper, 1973; Håkansson, 1979). It eontains a sequenee of Upper Palaeozoie carbonates and Upper Palaeozoic - Mesozoic mainly coarse clastics more than 3 km thick.

scholarly journals Observations on the Upper Permian of Wegener Halvø, East Greenland

1979 ◽  
Vol 95 ◽  
pp. 90-92
Author(s):  
L Stemmerik
Keyword(s):  
Sedimentary Basin ◽  
Upper Permian ◽  
The South ◽  
East Greenland ◽  
Eastern Side ◽  
The North ◽  
North Greenland

The Upper Permian sediments of East Greenland are exposed from Scoresby Land in the south to Clavering Ø in the north (fig. 30). The deposits on Wegener Halvø appear to be situated on the eastern side of the southern end of an elongated, approximately 80 km wide, sedimentary basin (Birkelund & Perch-Nielsen, 1976). Whether this basin extended northwards to include the Upper Permian deposits of North Greenland, has yet to be established.

TRENDS AND OUTLOOK FOR EXPLORATION IN WESTERN AUSTRALIA

2001 ◽  
Vol 41 (1) ◽  
pp. 497
Author(s):  
W.L. Tinapple
Keyword(s):  
Western Australia ◽  
Petroleum Industry ◽  
Petroleum Exploration ◽  
North West ◽  
The North ◽  
The Government ◽  
Water Gas ◽  
Increased Activity ◽  
Western Australian ◽  
Positive Results

Petroleum exploration activity in Western Australia over the past decade has been on the increase, boosted by the positive results of many new discoveries, mainly on the North West Shelf but also in frontier areas. Significant discoveries in 1999–2000 resulted from new exploration concepts including deep plays in the Barrow/Dampier Sub-basins, heavy oil plays in the Carnarvon Basin, a deep-water gas play west of Gorgon, large gas/condensate plays in the Browse Basin, and a new gas play in the southern Bonaparte Basin. Discovery itself is a great incentive to the industry to further exploration; however, concerns over oil price, the Australian dollar, markets, policies and perceived prospectivity impact on exploration spending. The short-term outlook for WA is good as a result of existing work commitments including an average of 50 exploration wells to be drilled each year for the next three years. Onshore, where exploration has been subdued, there are signs of increased activity. The Western Australian government is playing a key role in promoting the State through gazettals, promotional activities— conferences and publications, acquiring precompetitive data and making petroleum data more accessible. The government funded Petroleum Exploration Initiatives program is continuing and efforts are being made to facilitate exploration. Sustained high oil prices, improvements in technology and efforts to expedite access to land are just some of the factors which will assist companies in their endeavours. In the longer term, continued growth in Western Australia’s petroleum industry is projected.

THE GEOLOGY OF THE OFFSHORE CANNING BASIN, WESTERN AUSTRALIA

1970 ◽  
Vol 10 (1) ◽  
pp. 78 ◽  
Author(s):  
A. Challinor
Keyword(s):  
Western Australia ◽  
Close Association ◽  
Structural Features ◽  
Geophysical Data ◽  
Petroleum Exploration ◽  
Canning Basin ◽  
Hydrocarbon Reservoir ◽  
Geophysical Surveys ◽  
Australian Continent ◽  
Carnarvon Basin

The Canning Basin is a major geological province of Western Australia and of the Australian continent. It constitutes a major crustal down-warp between the Precambrian Kimberley and Pilbara Blocks and extends offshore onto the wide Rowley Shelf. A large part of this shelf is held under petroleum exploration permit by a group of companies of which B.O.C. of Australia Limited is operator.To date no wells have been drilled in this offshore Canning Basin but extensive geophysical surveys have allowed an interpretive geological model to be presented. This model is based upon an interpretation of geophysical data by extrapolation from offshore data and well control in the Carnarvon Basin and onshore well, outcrop and geophysical data in the Canning Basin.The major Palaeozoic structural features of the Broome Swell and Fitzroy Graben which characterise the onshore Canning Basin extend offshore beneath Mesozoic and Tertiary cover. Thick Palaeozoic and Permo-Triassic sediments are thus expected offshore in the Fitzroy Graben extension and in a major sub-basin at the offshore margin of the Pilbara Block called the Bedout Sub-basin. This sub-basin is believed to have had continued development during the Mesozoic with the accumulation of large thicknesses of Jurassic-Cretaceous sediments. It is restricted further offshore by the structurally positive Rankin Platform, a feature reflected in a large positive gravity anomaly.Mesozoic deposition was associated with a westerly tilt of the Rowley Shelf and Mesozoic thickness consequently increases westwards. The tilt increased during the Tertiary with the development of a major Tertiary stratigraphic wedge locally reaching 8000-10,000 feet in thickness at the shelf edge.Sedimentary deposition was controlled throughout Phanerozoic time by periodic epeirogenic warping related to uplift of the two major blocks. These movements caused considerable structural fragmentation and initiated periods of exiensive erosion. Complex lithofacies variations are thus expected and multiple intra-sectional unconformities are evident.The area contains many fault induced fold features, some compressional folds and extensive stratigraphic trap potential. Coarse clastic units with high hydrocarbon reservoir potential are expected to occur in close association with postulated marine Mesozoic basinal shale sequences. Similar deposits in the Carnarvon Basin and its offshore extension have been proved to be hydrocarbon bearing and productive (Barrow Island). The hydrocarbon potential of the offshore Canning Basin is thus rated highly.

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