Relevant bibliographies by topics / Rock deformation New South Wales

Academic literature on the topic 'Rock deformation New South Wales'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Rock deformation New South Wales"

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Rosenbaum, G., I. T. Uysal, and A. Babaahmadi. "The Red Rock Fault zone (northeast New South Wales): kinematics, timing of deformation and relationships to the New England oroclines." Australian Journal of Earth Sciences 62, no. 4 (May 19, 2015): 409–23. http://dx.doi.org/10.1080/08120099.2015.1052560.

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Parr, Joanna. "The preservation of pre-metamorphic colloform banding in pyrite from the Broken Hill-type Pinnacles deposit, New South Wales, Australia." Mineralogical Magazine 58, no. 392 (September 1994): 461–71. http://dx.doi.org/10.1180/minmag.1994.058.392.11.

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AbstractTwo distinct generations of pyrite, with different morphologies, are described from the Proterozoic Broken Hill-type Pinnacles deposit in western NSW. The earlier, py1, forms concentric layers interpreted as colloform banding. Although the textures are somewhat similar to those observed in supergene alteration zones, textural relationships in fresh rocks suggest that these are pre-metamorphic and that the pyrite formed as the result of precipitation from hydrothermal fluids in open veins, vugs and fissures. The second generation, py2, post-dates py1 and forms euhedral overgrowths on it. It is interpreted as being synchronous with the main phase of base metal sulphide mineralisation. The textures reported here are previously unrecorded for Broken Hill-type mineralisation, and have implications for the regional identification of feeder zones to the Broken Hill deposit. The evidence supports a model in which mineralising conditions at the Pinnacles were characterised by slightly higher oxygen and lower sulphur fugacity (further constrained by Fe contents of sphalerite) than at Broken Hill, where pyrrhotite is the major Fe sulphide.The pre-metamorphic textures observed in the pyrite at the Pinnacles deposit are also unusual because they have survived granulite facies metamorphism and five phases of deformation, whereas previously the preservation of such textures has not been recognised at metamorphic grades greater than amphibolite facies.
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Offler, R., and E. Prendergast. "Significance of illite crystallinity and bo values of K-white mica in lowgrade metamorphic rocks, North Hill End Synclinorium, New South Wales, Australia." Mineralogical Magazine 49, no. 352 (June 1985): 357–64. http://dx.doi.org/10.1180/minmag.1985.049.352.06.

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AbstractA study of low-grade metamorphism in late Silurian to early Carboniferous rocks in the North Hill End Synclinorium and adjacent anticlinoria has been made by the determination of illite crystallinity and bo values of K-white mica in eighty slates and phyllites. Illite crystallinity values vary from 0.40 Δ°2θ on the Molong Anticlinorium to 0.12 Δ°2θ within the axis of the synclinorium, suggesting anchizonal to epizonal metamorphic conditions. This is in agreement with previous observations on Ca-Al-hydrosilicate assemblages which indicated a change from prehnite-pumpellyite facies in the anticlinoria adjacent to the synclinorium to middle greenschist facies in the axis. Local variations in crystallinity are attributed to variation in ak+ in fluids migrating along cleavage zones.The mean bo value obtained from the pelites is 9.017 Å (σn = 0.008; n = 80) which is in close agreement with that obtained from part of the adjacent Capertee Anticlinorium (x̄ = 9.019 Å; σn = 0.007; n = 52). However, ‘t’ tests indicate that two bo populations are present in the synclinorium (x̄ = 9.019 and 9.022 Å), with the lower values concentrated in the southern portion of this structure. The two populations are considered to be the result of slightly different metamorphic conditions prevailing during the deformation of the rocks in the synclinorium. A higher geothermal gradient affecting rocks giving the lower bo values is attributed to the presence of granitoids at shallower depths than elsewhere in the synclinorium.
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Morand, V. J. "Emplacement and deformation of the Wyangala Batholith, New South Wales." Australian Journal of Earth Sciences 35, no. 3 (September 1988): 339–53. http://dx.doi.org/10.1080/08120098808729452.

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Montgomery, Steven S., and Geoffery W. Liggins. "Recovery of the eastern rock lobsterSagmariasus verreauxioff New South Wales, Australia." Marine Biology Research 9, no. 1 (January 2013): 104–15. http://dx.doi.org/10.1080/17451000.2012.727436.

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KREFFT, GERARD. "5. DESCRIPTION OF A NEW SPECIES OF ROCK-KANGAROO FROM NEW SOUTH WALES." Proceedings of the Zoological Society of London 33, no. 1 (July 6, 2010): 324–25. http://dx.doi.org/10.1111/j.1469-7998.1865.tb02343.x.

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Short, J. "The Diet of the Brush-Tailed Rock-Wallaby in New-South-Wales." Wildlife Research 16, no. 1 (1989): 11. http://dx.doi.org/10.1071/wr9890011.

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The diet of the brush-tailed rock-wallaby, Petrogale penicillata, was studied at two sites on the central coast and tablelands of New South Wales over a 12-month period of below-average rainfall. Diet was assessed by microscopic analysis of faeces. Particles within the faeces were identified to broad categories of vegetation: grasses, sedges, forbs, parallel-veined shrubs, reticulate-veined shrubs, and ferns. Diets were similar at both sites despite considerable differences in annual average rainfall (1330 v.577mm) and vegetation. Grasses constituted 35-50% of the diet, forbs 25-40%, and browse 12-30%. Ferns and sedges were of minor importance or were absent from the diet. Preferences for particular plant categories (measured as abundance in diet divided by abundance in habitat) were greatest in summer. Parallel-veined shrubs and trees and forbs were most preferred at one site; grasses and shrubs and trees at the other. Ferns were preferred least.
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Perkins, C., M. C. Hinman, and J. L. Walshe. "Timing of mineralization and deformation, Peak Au mine, Cobar, New South Wales∗." Australian Journal of Earth Sciences 41, no. 5 (October 1994): 509–22. http://dx.doi.org/10.1080/08120099408728161.

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Clegg, John, and Simon Ghantous. "Rock-paintings of exotic animals in the Sydney Basin, New South Wales, Australia." Before Farming 2003, no. 1 (January 2003): 1–12. http://dx.doi.org/10.3828/bfarm.2003.1.7.

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McCarthy, Frederick D. "Catalogue of the Aboriginal Relics of New South Wales. Part I. Rock Engravings." Mankind 3, no. 3 (February 10, 2009): 91–99. http://dx.doi.org/10.1111/j.1835-9310.1942.tb00155.x.

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Dissertations / Theses on the topic "Rock deformation New South Wales"

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Prior, D. J. "Deformation processes in the Alpine Fault mylonites, South Island, New Zealand." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384072.

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Campbell, Heather, and n/a. "Partitioning of plate boundary deformation in South Westland, New Zealand : controls from reactivated structures." University of Otago. Department of Geology, 2005. http://adt.otago.ac.nz./public/adt-NZDU20060705.150820.

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The Australian-Pacific plate boundary is an uncomplicated structure along most of its length in the South Island, New Zealand. In South Westland, south of the Arawata River, however, several terranes converge onto the Alpine fault. Inherent anisotropies arising from the position of pre-existing fault structures, lithological contacts and rheological heterogeneities within these give rise to an atypically diffuse and complex zone, the overall geometry of which resembles a regional scale transpressive flower structure. The flower structure is a broad deformation zone 60 km in length extending approximately 7 km from the Alpine fault to its eastern limit, the Dun Mountain Ophiolite Belt. Integral parts of the structure are the Hollyford Fault System and the Livingstone Fault System. The area is characterised by an array of left-stepping, subparallel faults with an average 060� strike linked by 020� striking structures. All fault traces offset Quaternary features. Fractions of the total interplate slip are partitioned across the reactivated structures. Additionally, kinematic indicators reveal partitioning of strike-slip and oblique/dip-slip deformation across the related secondary fault zones. The behaviour of the plate boundary zone in South Westland is fundamentally controlled by reactivation of the Hollyford Fault System and the Livingstone Fault System which partition slip away from the Alpine fault. As a consequence, the eastward transferral of slip onto the curved geometry of the converging fault systems has ultimately created a left-stepping contractional regime, the equivalent of a restraining bend in the plate boundary zone. The competent Dun Mountain Ophiolite Belt controls the geometry and evolution of the reactivated structures. It also acts as an indenter and imposes additional boundary conditions adding to the shortening component in the region and the onset of complex transpressional strain patterns. The geometry and kinematics of the flower structure in the upper crust is mimicked in the ductile mid to lower crust. Upper greenschist facies mylonites reveal a complex fold pattern developed in response to contemporaneous non-coaxial and coaxial deformation. The folding formed during a continuation of deformation associated with mylonitisation at depths within the fault system. The fact that strain localisation and transpressive strain patterns in the brittle crust continue into the ductile zones suggests there is a feedback relationship between the two regimes. The reactivation of pre-existing structures and the influence of rheological factors are considered as first order factors controlling strain partitioning in the plate boundary zone. Recognition of local strain partitioning is important for assessing slip rates and earthquake recurrence. Similarly, the faults extend down below the seismogenic zone so that interaction of the different structures with each other may produce changes in fault behaviour which affects earthquake nucleation. Although the Alpine fault is a major structure in the South Island of New Zealand with over 400 km of dextral movement, the reactivated structures still exert a degree of control locally on the structure and kinematics of the plate boundary zone. Reactivation of inherent fault structures has important implications for the initiation of plate boundary faults and the alteration of the plate boundary geometry with evolving deformation.
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Dove, Michael Colin Geography Program UNSW. "Effects of estuarine acidification on survival and growth of the Sydney rock oyster Saccostrea glomerata." Awarded by:University of New South Wales. Geography Program, 2003. http://handle.unsw.edu.au/1959.4/20485.

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Estuarine acidification, caused by disturbance of acid sulfate soils (ASS), is a recurrent problem in eastern Australia. Affected waters are characterised by low pH and elevated concentrations of metals, principally aluminium and iron. The effects of acid and elevated metal concentrations associated with ASS, on adult Sydney rock oysters, have not been previously investigated. This study tested links between ASS-affected drainage, subsequent estuarine acidification and Sydney rock oyster production problems on the Hastings and Manning Rivers, mid north coast New South Wales. The primary objective of this thesis was to establish if estuarine acidification causes mortality and slow growth in individual Sydney rock oysters by exposing oysters to low pH, iron and aluminium using field and laboratory experiments. Water quality data showed that estuarine acidification was spatially extensive in the Hastings and Manning Rivers following heavy rainfall and was due to mineral acids originating from drained or excavated ASS. Estuarine acidification regularly affected areas used for Sydney rock oyster production following heavy rainfall. Field experiments showed that Sydney rock oyster mortality rates were significantly higher at sites exposed to ASS-affected waters compared to locations that were isolated from ASS-affected waters. Oyster mortality increased with the time of exposure and smaller oysters (mean weight = 5 g) experienced significantly higher mortality relative to larger oysters (mean weight = 29 g). This was caused by acid-induced shell degradation resulting in perforation of the smaller oysters??? under-developed shells. Additionally, Sydney rock oyster growth rates were dramatically reduced at sites exposed to ASS-affected waters and the overall mean condition index of oysters at ASS-affected field sites was significantly lower than the overall mean condition index of oysters at non-impacted sites. Findings from laboratory experiments showed that ASS-affected water alters oyster valve movements and significantly reduces oyster feeding rates at pH 5.5. Acidic treatments (pH 5.1) containing 7.64 mg L-1 of aluminium or ASS-affected water caused changes in the mantle and gill soft tissues following short-term exposure. Degenerative effects described in oysters in this study were also due to iron contained in ASS-affected waters. Iron precipitates accumulated on the shell, gills and mantle and were observed in the stomach, intestine, digestive tubules and rectum. This study concluded that Sydney rock oysters are unable to tolerate acidic conditions caused by ASS outflows and cannot be viably cultivated in acid-prone areas of the estuary.
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Washburn, Malissa. "Architecture of the Silurian sedimentary cover sequence in the Cadia porphyry Au-Cu district, NSW, Australia : implications for post-mineral deformation." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1064.

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Alkalic porphyry style Au-Cu deposits of the Cadia district are associated with Late-Ordovician monzonite intrusions, which were emplaced during the final phase of Macquarie Arc magmatism at the end of the Benambran Orogeny. N-striking faults, including the curviplanar, northerly striking, moderately west-dipping basement thrust faults of the Cadiangullong system, developed early in the district history. NE-striking faults formed during rifting in the late Silurian. Subsequent E-W directed Siluro- Devonian extension followed by regional E-W shortening during the Devonian Tabberabberan Orogeny dismembered these intrusions, thereby superposing different levels porphyry Au-Cu systems as well as the host stratigraphy. During the late Silurian, the partially exhumed porphyry systems were buried beneath the Waugoola Group sedimentary cover sequence, which is generally preserved in the footwall of the Cadiangullong thrust fault system. The Waugoola Group is a typical rift-sag sequence, deposited initially in local fault-bounded basins which then transitioned to a gradually shallowing marine environment as local topography was overwhelmed. Basin geometry was controlled by pre-existing basement structures, which were subsequently inverted during the Devonian Tabberabberan Orogeny, offsetting the unconformity by up to 300m vertically. In the Waugoola Group cover, this shortening was accommodated via a complex network of minor detachments that strike parallel to major underlying basement faults. For this reason, faults and folds measured at the surface in the sedimentary cover can be used as a predictive tool to infer basement structures at depth.
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Dibden, Julie Ann. "Drawing in the land : rock-art in the upper Nepean, Sydney basin, New South Wales : Vol.1 & 2." Phd thesis, 2011. http://hdl.handle.net/1885/150760.

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The Upper Nepean River catchment in the Sydney Basin has a rich repertoire of visual imagery - rock-art, and a variety of other types of marks on stone. This thesis examines the diversity and spatial distribution across the land of these rock markings and change over time. The theoretical focus is on materiality, practice and performance. In previous research conducted in the Sydney Basin, rock-art located in shelters has been considered, at least implicitly, to be functionally equivalent across both space and time. The research in this thesis, by comparison, has been developed to explore both synchronic and diachronic variability in sheltered rock-art and to give consideration to the occupational and contextual diversity this represents. The rock-art corpus is analysed in accordance with its material diversity in order to explore the qualitatively different forms of behavioural expression that this variation may embody. A fundamental distinction is made between graphically structured, imposed form on the one hand, and gestural marks on the other. The material relationship between the rock-art and the rock on and within which it is set, is also examined. The different data sets are explored dialectically and in accordance with their geographic and environmental location in order to gain an appreciation of the experience and engagement between Aboriginal people and the land in this part of the Sydney Basin. The analysis employs both quantitative and explicitly narrative approaches to examine the spatial and temporal dimensions of occupation. While this research has been conducted without the support of any direct dating or archaeological context, the methodology has, nevertheless allowed for the discrimination of temporal diversity in spatial patterns, and concomitantly, the manner in which the land has been occupied and created as landscape, over time. In order to achieve this, it has been crucial to analyse the rock markings not only in respect of their behaviour correlates, but also their material locations within geographic, environmental and micro-topographic space. The analysis of the Upper Nepean rock-art reveals a pattern of diachronic change in which the marking of the land with imagery became increasingly diverse in a number of formal and material ways, and geographically and environmentally common and widespread. The results suggests that regional bodies of rock-art are likely to have been produced in accordance with a diversity of motivations and functional purposes and that significant temporal change in the impetus to mark the land, and the choice of how and where to do so, can occur over relatively short time frames. It is argued that the practice of marking the land in the Upper Nepean was a dynamic dialectic, both constitutive and transformative, of being and place. Over time, people drew the land into an object world which became, with ever increasing inscription and embellishment, a marked and painted landscape, both productive of and reflecting, a complex history.
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Krassoi, Frederick Rudolf. "Population ecology of the Sydney rock oyster saccostrea commercialis and the pacific oyster crassostrea gigas in a New South Wales estuary." 2001. http://hdl.handle.net/2100/1107.

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University of Technology, Sydney, 2001.
The study of place was often divided between the spatial interests of geographers and local historians intent on constructing heroic lineages. In the period of accelerated globalization however, discrete discourses on time and space are no longer tenable. Histories of place engage the transdisciplinary approach of recent scholarship in understanding the complexities and fluidity of the world in which we live. Places are constructed out of the enmeshing of the material, social and cultural. The reasons why people migrate both within and to particular places are also critical to the ongoing perceptions of that place, and the dynamics by which local communities operate within global networks. This thesis is an historical study of a recent sewage ocean outfall dispute between residents and the local council at Emerald Beach, in the Coffs Harbour region of New South Wales' Mid-North Coast. Alongside documentary sources, it uses oral testimony to examine the factors that contributed to people's understanding of their place, and the processes that resulted in the public contestation over that place. It argues that the positions taken in the sewage dispute cannot simply be perceived as a function of individual residents' responses within a bounded local context, but were a result of the complex processes of internal migration to the region since colonisation, and especially since the 1970s, that brought competing visions for the same place. In exploring the historical traces of the dispute, the thesis examines the first wave of non-Aboriginal migration to the coastal hinterland before turning attention to the second intensive wave of migration in the postwar period. Attention shifted away from the hinterland to the coast, and the chapters examine competing uses for the coast as local born residents, tourists and the influx of new settlers from the 1970s brought diverse dreams for the warm North Coast. In particular, the sewage conflict that grew into the direct-action protests at Emerald Beach provides clear insights into the flows of migration and settlement that led to the particular mix of people who fought for their divergent conceptions of place as critical to their lifestyle and residency. Without examining historical representations of places and events, conflict situations such as the sewage dispute at Emerald Beach cannot be fully illuminated. By demonstrating the force of internal migration on perceptions of, and contestation within place, this thesis provides one framework from which other places might be investigated.
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Books on the topic "Rock deformation New South Wales"

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Dibden, Julie. Drawing in the Land: Rock Art in the Upper Nepean, Sydney Basin, New South Wales. ANU Press, 2019.

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Benwell, Andrew. Plants of Subtropical Eastern Australia. CSIRO Publishing, 2020. http://dx.doi.org/10.1071/9781486313662.

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Plants of Subtropical Eastern Australia describes the rich flora of this biogeographically distinct region located on the east coast of Australia, covering the north coast of New South Wales and coastal South-East Queensland. This guide presents a selection of common, threatened and ecologically significant plants found in the region’s major vegetation habitats including rainforest, heathland, grassy forest, wetlands and rock outcrops. More than 500 plants are featured, with photographs and descriptive features enabling the reader to identify these species if encountered. Interesting biological, cultural and historical characteristics of each species are included, along with notes on the plant’s biogeography and a map of its distribution. Suitable for anyone with an interest in plant ecology and botany, Plants of Subtropical Eastern Australia is the definitive guide to this fascinating region of Australia and its unique flora.
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Book chapters on the topic "Rock deformation New South Wales"

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Gratchev, Ivan, Sinnappoo Ravindran, Dong Hyun Kim, Chen Cui, and Qianhao Tang. "Mechanisms of Shallow Rainfall-Induced Landslides from Australia: Insights into Field and Laboratory Investigations." In Progress in Landslide Research and Technology, Volume 1 Issue 1, 2022, 113–22. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-16898-7_7.

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AbstractThis paper presents and discusses the mechanisms of rainfall-induced shallow landslides that commonly occur in South East Queensland (SEQ) and northern New South Wales (NSW), Australia. The major factors causing the formation of landslide mass such as geology, weathering, and rainfall patterns were discussed. Results from field surveys and laboratory testing of rock/soil material from landslide masses were presented, and relationships between the material strength and landslide occurrence were drawn. It was found that most of shallow slides were related to sandstone deposits. Those failures occurred on natural slopes and road cuts with the inclination of the failure plane being in the range of 35–45°. For natural slopes where the landslide mass mostly consisted of coarse-grained soil, the relationship between the soil strength and water content was established. In addition, the relationship between rainfall patterns such as intensity and duration, and the landslide occurrence was presented. Based on the data from field work and laboratory results including a series of flume tests, the mechanism of shallow landslides triggered by rainfall events was identified and discussed.
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Harris, Anthony C., David R. Cooke, Ana Liza Garcia Cuison, Malissa Groome, Alan J. Wilson, Nathan Fox, John Holliday, and Richard Tosdal. "Chapter 30: Geologic Evolution of Late Ordovician to Early Silurian Alkalic Porphyry Au-Cu Deposits at Cadia, New South Wales, Australia." In Geology of the World’s Major Gold Deposits and Provinces, 621–43. Society of Economic Geologists, 2020. http://dx.doi.org/10.5382/sp.23.30.

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Abstract The Cadia district of New South Wales contains four alkalic porphyry Au-Cu deposits (Cadia East, Ridgeway, Cadia Hill, and Cadia Quarry) and two Cu-Au-Fe skarn prospects (Big Cadia and Little Cadia), with a total of ~50 Moz Au and ~9.5 Mt Cu (reserves, resources, and past production). The ore deposits are hosted by volcaniclastic rocks of the Weemalla Formation and Forest Reefs Volcanics, which were deposited in a submarine basin on the flanks of the Macquarie Arc during the Middle to Late Ordovician. Alkalic magmatism occurred during the Benambran orogeny in the Late Ordovician to early Silurian, resulting in the emplacement of monzonite intrusive complexes and the formation of porphyry Au-Cu mineralization. Ridgeway formed synchronous with the first compressive peak of deformation and is characterized by an intrusion-centered quartz-magnetite-bornite-chalcopyrite-Au vein stockwork associated with calc-potassic alteration localized around the apex of the pencil-like Ridgeway intrusive complex. The volcanic-hosted giant Cadia East deposit and the intrusion-hosted Cadia Hill and Cadia Quarry deposits formed during a period of relaxation after the first compressive peak of the Benambran orogeny and are characterized by sheeted quartz-sulfide-carbonate vein arrays associated with subtle potassic, calc-potassic, and propylitic alteration halos.
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Franklin, Natalie R. "Rock engravings in western New South Wales:." In Aesthetics, Applications, Artistry and Anarchy: Essays in Prehistoric and Contemporary Art, 37–58. Archaeopress Publishing Ltd, 2019. http://dx.doi.org/10.2307/j.ctvndv846.8.

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"Use of several different methods for characterising a fractured rock aquifer, case study Kempfield, New South Wales, Australia." In Fractured Rock Hydrogeology, 329–50. CRC Press, 2014. http://dx.doi.org/10.1201/b17016-24.

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Taçon, Paul S. C., Wayne Brennan, Graham King, Dave Pross, and Matthew Kelleher. "The contemporary cultural significance of Gallery Rock, a petroglyph complex recently found in Wollemi National Park, New South Wales, Australia." In Aesthetics, Applications, Artistry and Anarchy: Essays in Prehistoric and Contemporary Art, 71–85. Archaeopress Publishing Ltd, 2019. http://dx.doi.org/10.2307/j.ctvndv846.10.

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Graham, Linda J., Penny Van Bergen, and Naomi Sweller. "Caught between a rock and a hard place: disruptive boys' views on mainstream and special schools in New South Wales, Australia." In Alternative Educational Programmes, Schools and Social Justice, 35–54. Routledge, 2019. http://dx.doi.org/10.4324/9781351211888-4.

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Baird, Graham B., Fawna J. Korhonen, and Kevin R. Chamberlain. "Pressure-temperature-deformation-time path for the Seve Nappe Complex, Kebnekaise Massif, Arctic Swedish Caledonides." In New Developments in the Appalachian-Caledonian- Variscan Orogen. Geological Society of America, 2022. http://dx.doi.org/10.1130/2021.2554(12).

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ABSTRACT The Seve Nappe Complex in the Scandinavian Caledonides records a range of peak metamorphic conditions and timings. To better understand pressure-temperature-deformation-time differences throughout the complex and possible tectonic scenarios, metamorphosed mafic rocks within the Tarfala Valley of the Kebnekaise Massif (Sweden) were investigated using integrated petrologic and geochronologic techniques. Thermodynamic modeling of two samples using domainal and whole-rock compositions integrated with mineral chemistry, mineral textures, and titanite and zircon U-Pb geochronology constrained a portion of the pressure-temperature (P-T) path. Peak metamorphic conditions of 590–660 °C and 9.7–10.5 kbar were followed by near-isothermal decompression or a subsolidus clockwise P-T path. Amphibolite units in the valley record retrograde conditions at 450–550 °C at less than 7.5 kbar, although mineral modes and textures are most consistent with pressures <4 kbar. The majority of titanite growth occurred due to the introduction of hydrous fluids during cooling and following exhumation to midcrustal levels. U-Pb ages of retrograde titanite define a spread from ca. 480 to 449 Ma, and the oldest age is interpreted to constrain the timing of retrogression following exhumation. This interpretation is supported by a U-Pb zircon crystallization age of 481 ± 7 Ma for a metamorphosed intermediate to felsic synkinematic dike hosted in one of the amphibolite units. These results indicate that the Kebnekaise region records Early Ordovician deformation and metamorphism that was of lower grade compared to other Seve Nappe Complex locations to the south. The tectonic history of these rocks includes metamorphism and exhumation during the Cambrian–Ordovician pre-Scandian event, followed by thrusting of the Seve Nappe Complex and neighboring rocks onto Baltica during the Silurian Scandian orogeny.
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Conference papers on the topic "Rock deformation New South Wales"

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Fityus, Stephen, and J. Gibson. "Rock Mass Stability in the Southern New England Fold Belt, New South Wales, Australia." In First Southern Hemisphere International Rock Mechanics Symposium. Australian Centre for Geomechanics, Perth, 2008. http://dx.doi.org/10.36487/acg_repo/808_57.

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Sainsbury, David. "Analysis of River Bed Cracking Above Longwall Extraction Panels in the Southern Coalfield of New South Wales, Australia." In First Southern Hemisphere International Rock Mechanics Symposium. Australian Centre for Geomechanics, Perth, 2008. http://dx.doi.org/10.36487/acg_repo/808_137.

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Al-Sulaimi, Ghadna, Loic Bazalgette, Salim Al-Shuaili, Mohammed Al-Harthi, Fakhriya Al-Shuaibi, and Samantha Large. "Is Water Cut Influenced by Natural Fractures in South of Sultanate of Oman Porous Clastic Reservoirs? An Answer Based on Integrated Observations." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211658-ms.

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Abstract The field location is in the South of the Sultanate of Oman. It produces from two clastic reservoirs which are mainly developed by closely spaced horizontal wells. One of the key challenges is the quick development of a high water cut. During the recent past years, this behavior was attributed to water shortcutting through a supposed network of natural open fractures in the reservoir. For this reason, the usual mitigation consisted in acquiring borehole images (BHI) to detect supposedly natural open fractures. The corresponding well sections were then isolated using swellable packer (EZIP) technology to delay water cut development. Questioning the presence of an abundant network of open natural fractures in the reservoir and their potential role in high water cut, an integrated technical study was performed to evaluate the adequacy of data acquisition and mitigation plans. Through the integration of multidisciplinary static and dynamic data a better understanding of fracture geomechanics in this specific reservoir was reached. The main building blocks of this integrated study were: – Thorough QC of the initial BHI interpretations. Re-interpretation had to be performed in multiple occasions to keep interpretation methods and nomenclature uniform. – Analysis of the mechanical behavior of high porosity / low cohesion sandstone reservoirs developed in the field. Evaluation of the likelihood of encountering natural open fractures in such lithologies based on elementary principles of rock mechanics. – Analysis of fluid production history and of dynamic data with regards to the potential origins of early water breakthrough. Our main results were the following: – The quantities of natural open fractures originally interpreted from borehole images were significantly overestimated. Electrically resistive traces on BHI were almost systematically interpreted as open fractures in the reservoirs. – The application of elementary rock mechanics principles (based on Mohr-Coulomb laws) does not support the presence of dense networks of natural open fractures in high porosity/low cohesion clastic rocks under the deformation conditions to which the field was exposed. Therefore, the presence of highly connected fracture patterns is unlikely in such rocks. – Dynamic observations indicate that water short circuiting in high permeability matrix is most likely due to the fluid mobility contrasts for heavy oil reservoir supported by relatively strong aquifer (water "fingering" through oil in high permeability matrix). Based on these results we recommended to reconsider the systematic acquisition of BHI in these reservoir formations as a mitigation for early water breakthrough as well as the systematic isolation of supposedly fractured intervals. Conversely, the improvement of the characterization of the distribution, geometry, and spatial organization of sand bodies and of their connectivity in the reservoir units was suggested. This task is challenging but will be supported by optimizing the utilization of the large amount of already acquired borehole image data. With this aim in mind new images may also be collected in selected wells. A proper understanding of the impact of the detailed reservoir architecture on water versus oil flow through the reservoir is now needed to provide an enhanced mitigation plan to early water breakthroughs. Provisional solutions rely in adapting production parameters such as the rates of oil offtake for the new infill wells. Investing in well and reservoir surveillance (WRS) will also increase the value of the current well stock.
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