Academic literature on the topic 'Mount Isa Inlier'

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Journal articles on the topic "Mount Isa Inlier"

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BLENKINSOP, T. "Mount Isa inlier." Precambrian Research 163, no. 1-2 (May 20, 2008): 1–6. http://dx.doi.org/10.1016/j.precamres.2007.08.009.

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McConachie, B. A., M. G. Barlow, J. N. Dunster, R. A. Meaney, and A. O. Schaap. "THE MOUNT ISA BASIN—DEFINITION, STRUCTURE AND PETROLEUM GEOLOGY." APPEA Journal 33, no. 1 (1993): 237. http://dx.doi.org/10.1071/aj92018.

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The Mount Isa Basin is a new concept to describe the area of Palaeo- to Mesoproterozoic rocks south of the Murphy Inlier (not the Murphy Tectonic Ridge) and inappropriately described as the Mount Isa Inlier. The new basin concept presented in this paper allows the characterisation of basin-wide structural deformation and the recognition of areas with petroleum exploration potential.The northern depositional margin of the Mount Isa Basin is the metamorphic, intrusive and volcanic complex referred to as the Murphy Inlier. The eastern, southern and western boundaries of the basin are obscured by younger basins (Carpentaria, Eromanga and Georgina Basins). The Murphy Inlier rocks comprise the seismic basement to the Mount Isa Basin sequence. Evidence for the continuity of the Mount Isa Basin with the McArthur Basin to the northwest and the Willyama Block (Basin) at Broken Hill to the south is presented. These areas combined with several other areas of similar age are believed to have comprised the Carpentarian Superbasin.The application of seismic exploration within Authority to Prospect (ATP) 423P at the northern margin of the basin was critical to the recognition and definition of the Mount Isa Basin. The northern Mount Isa Basin is structurally analogous to the Palaeozoic Arkoma Basin of Oklahoma and Arkansas in the southern USA but as with all basins it contains unique characteristics, a function of its individual development history. The northern Mount Isa Basin is defined as the basin area northwest of the Mount Gordon Fault.
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Hutton, Laurie J., Terence J. Denaro, Courteney Dhnaram, and Geoff M. Derrick. "Mineral Systems in the Mount Isa Inlier." Episodes 35, no. 1 (March 1, 2012): 120–30. http://dx.doi.org/10.18814/epiiugs/2012/v35i1/011.

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Wilson, I. H. "Geochemistry of Proterozoic Volcanics, Mount Isa Inlier, Australia." Geological Society, London, Special Publications 33, no. 1 (1987): 409–23. http://dx.doi.org/10.1144/gsl.sp.1987.033.01.28.

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Jayawardhana, Prasantha Michael, and S. N. Sheard. "The use of airborne gamma‐ray spectrometry—A case study from the Mount Isa inlier, northwest Queensland, Australia." GEOPHYSICS 65, no. 6 (November 2000): 1993–2000. http://dx.doi.org/10.1190/1.1444883.

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An airborne survey was undertaken on the Mount Isa inlier in 1990–1992. During this survey, both airborne magnetic and gamma‐ray spectrometric data were recorded over 639 170 line-km. Because of perceived value of the radiometric data, stringent calibration procedures, including the creation of a test range, were adopted. In addition to the data from the newly‐flown areas, 76 760 line‐km of existing data were acquired from other companies, and were reprocessed and merged with the Mount Isa survey. The total area covered by the Mount Isa airborne survey was 151 300 km2. Over the last five years, several studies have been undertaken that seek to exploit the Mount Isa region gamma‐ray database and maximise the use of radiometrics for mineral exploration. This paper highlights the results of these studies by focussing on radiometric signatures of major mines in the Mount Isa Inlier, radioelement contour maps, geomagnetic/radiometric interpretation maps, lithological mapping, regolith mapping, geochemical sampling, and spatial modeling using geographical information systems (GIS). Due to the recent introduction of GIS technology and better techniques for handling high quality digital data, there has been a revived interest in making more use of image data sets. The integration of raster and vector data sets for both spectral and spatial modeling has maximized the potential of this approach.
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Passchier, C. W., and P. R. Williams. "Proterozoic extensional deformation in the Mount Isa inlier, Queensland, Australia." Geological Magazine 126, no. 1 (January 1989): 43–53. http://dx.doi.org/10.1017/s0016756800006130.

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AbstractThe earliest of four distinct phases of deformation recognized in the central part of the Proterozoic Mount Isa inlier involved brittle extensional faulting at shallow crustal levels. Extensional faulting produced stacks of imbricate fault slices, listric normal faults and characteristic tourmalinerich breccias. Structures belonging to this phase occur over a large part of the inlier and indicate an important phase of basin-forming crustal or lithospheric extension at 1750–1730 Ma. Late intense ductile deformation and tight folding of the imbricate systems destroyed part of these older structures, and obscures their existence in many parts of the inlier.
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Narelle, Neumann, Southgate Peter, and Gibson George. "A new chronostratigraphic framework for the Mount Isa Inlier." ASEG Extended Abstracts 2006, no. 1 (December 2006): 1–2. http://dx.doi.org/10.1071/aseg2006ab124.

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Passchier, C. W. "Evidence for early extensional tectonics in the Proterozoic Mount Isa inlier, Australia." Geology 14, no. 12 (1986): 1008. http://dx.doi.org/10.1130/0091-7613(1986)14<1008:efeeti>2.0.co;2.

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Stumpfl, E. F. "Geology of the Mount Isa Inlier and Environs, Queensland and Northern Territory." Ore Geology Reviews 4, no. 3 (March 1989): 275–76. http://dx.doi.org/10.1016/0169-1368(89)90020-6.

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Neudert, Martin K. "Geology of the Mount Isa Inlier and Environs, Queensland and Northern Territory." Earth-Science Reviews 27, no. 3 (May 1990): 277–78. http://dx.doi.org/10.1016/0012-8252(90)90014-m.

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Dissertations / Theses on the topic "Mount Isa Inlier"

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Bruce, Matthew. "The structural setting of the Knapdale Quartzite, Mount Isa Inlier /." Title page, abstract and contents only, 1999. http://web4.library.adelaide.edu.au/theses/09SB/09sbb887.pdf.

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Thesis (B.Sc.(Hons.))--University of Adelaide, Dept. of Geology and Geophysics, 1999.
National grid reference Quamby (6957) 1:100 000 sheet. One col. folded map in pocket pasted onto back cover. Includes bibliographical references (4 leaves).
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McLaren, Sandra. "The role of internal heat production during metamorphism of the Eastern Arunta Complex, central Australia, and the Mount Isa Inlier, Queensland /." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09SB/09sbm161.pdf.

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Thesis (B. Sc.(Hons.))--University of Adelaide, Dept. of Geology and Geophysics, 1997?
National Grid reference SF53-14 (Alice Springs), SF54-1 (Mount Isa) (1:250 000). Includes bibliographical references (leaves [32-36]).
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Loosveld, Ramon J. H. "Structure and tectono-thermal history of the Eastern Mount Isa Inlier, Australia." Phd thesis, 1988. http://hdl.handle.net/1885/140534.

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Murison, C. "Characteristics and ore genesis of the Mount Cuthbert deposit, Kalkadoon-Leichardt Belt, Mt Isa Inlier, north west Queensland." Thesis, 2015. http://hdl.handle.net/2440/118206.

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The Mount Cuthbert mine is situated ~100km NE of Mt Isa near the eastern edge of the Kalkadoon Leichhardt Belt (KLB); a Proterozioc block of the Mt Isa Inlier that divides the world class mineral regions of the IOCG-style Eastern Fold Belt (EFB) and the Mount Isa style copper deposits of the Western Fold Belt (WFB). KLB hosted deposits display characteristics related to both the EFB and WFB style of mineralisation; however mineralisation at Mount Cuthbert is indicative of a genesis for KLB hosted deposits related to metasomatic and tectonic events responsible for mineralisation in the EFB. The Mount Cuthbert mine is a low tonnage-high grade, shear controlled, retrograde chalcopyrite-pyrite-pyrrhotite deposit hosted within silica-dolomite and biotite-chlorite altered schists and felsic volcanic units of the Leichhardt Volcanics. The paragenetic alteration sequence is composed of 5 alteration stages: Stage 1) sodic alteration (albite + quartz); Stage 2) K-Fe-Ca alteration (siderite + calcite + dolomite+ quartz + biotite ± magnetite ± ilmenite ± apatite ± pyrite); Stage 3) mineralisation (chalcopyrite + quartz ± pyrite ± pyrrhotite ± calcite ± chlorite); Stage 4) major chloritisation; Stage 5) oxidation and localised enrichment to chalcocite. The alteration halo within the deposit is characterised by a proximal alteration envelope (<50m) consisting of chalcopyrite, pyrite, quartz, dolomite and chlorite, an intermediate alteration envelope (50-500m) described by quartz-carbonate veining with minor chalcopyrite, pyrite and pyrrhotite, in addition to extensive biotite and chlorite alteration and minor magnetite alteration. A distal alteration envelope (>500m) is identified tentatively as albite dominant. The trace geochemistry of the main chalcopyrite ± pyrite ore phase reveals elevated Ni, Zn, Cd and Hg in pyrite and elevated Sn, Pb, Se, V, Cr, Te, Ga, As, Cd, Mo, Ga, Bi and Sb in chalcopyrite. Differing elemental trends within the ore minerals supports paragenetic evidence suggesting several phases of sulphide growth. The characteristics and features of the Mount Cuthbert deposit outlined in this study show the greatest number of similarities to other low tonnage-high grade, shear hosted deposits present in the KLB (i.e. Mighty Atom, Orphan). This suggests that despite having a genesis related to that of the EFB, KLB deposits are uniquely their own style of mineralisation. This supports a shear-zone associated exploration model that is specific to the KLB.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2015
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Ford, Arianne. "Application of fractal and multifractal analysis to mineralized systems with special reference to the Mount Isa Inlier." Thesis, 2007. https://researchonline.jcu.edu.au/4785/3/02whole.pdf.

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Previous studies have suggested that controls on mineralization can be inferred from fractal analysis of mineral deposit distributions. However, many of these potential controls have been suggested on a qualitative rather than a quantitative basis. Whereas fractal analysis of mineral deposit distributions simply considers the location of the deposits, multifractal analysis can examine variation in values of attributes assigned to each deposit location such as deposit size. Yet no comprehensive study of the multifractal properties of mineral production data has been presented. Coupled deformation and fluid flow modelling has been used to verify sites of importance for mineralization in both two- and three-dimensional modelling space. Numerical modelling in three-dimensions of strike-slip faulting has yet to fully examine the effect of variation in fault geometry. Quantitative analysis of model outputs can provide criteria for ranking of different fault geometry parameters in terms of their relative prospectivity. The Proterozoic Mount Isa Inlier is a rich base metal province in northwest Queensland, Australia. As a well studied and well mineralized terrain, with comprehensive literature, and detailed geological and mineral deposit databases available, the Mount Isa Inlier is an ideal study area for investigating and verifying new techniques for brownfields exploration targeting. A quantitative examination of the controls on base metal deposition in the Mount Isa Inlier has substantial implications for future exploration in the region, with the techniques being readily applicable to other study areas and commodities. A new method is presented which evaluates mineral occurrence distributions by combining fractal analysis of clustering with Weights of Evidence (WofE). Variation in clustering of copper occurrences from the Mount Isa Inlier has a strong positive correlation with variation in clustering of fault bends (R=0.823), fault intersections (R=0.862), and mafic intrusions (R=0.885). WofE analysis as quantified by contrast values indicates that the copper occurrences have a strong spatial association with fault intersections, and fault bends. Correlation of the variation of clustering of copper occurrences and geological features shows a linear relationship with the contrast values indicating that the geological features controlling the clustering of the copper occurrences may be the same features controlling their localization. A fractal dimension can be used to quantify geological complexity, which characterises the distribution of faults and lithological boundaries. Two-dimensional analysis of geological complexity in the Mount Isa Inlier suggests that there exists a strong spatial relationship between geological complexity and copper endowment (R=0.914). A weak inverse relationship exists between complexity gradients and copper endowment. The results indicate that geological complexity could be used as an exploration targeting tool for copper in the Mount Isa Inlier. The de Wijs model was developed to describe the distribution of element enrichment and depletion in the crust. An expansion of the de Wijs model is presented to investigate the distribution of ore tonnage as well as grade. The expanded model produces a log-normal relationship between ore tonnage and grade. Multifractal analysis suggests that ore tonnage values from the expanded model are not multifractal. Analysis of production data from the Zimbabwe craton displays a log-normal relationship between ore tonnage and grade, and indicates that ore tonnage is not multifractal, as suggested by the expanded de Wijs model. Variation of fault bend and fault jog system geometry parameters during coupled deformation and fluid flow modelling of strike-slip faulting reveals that having a low dipping fault, a contrast in lithology and a wide fault width generates the highest dilation and integrated fluid flux values which can be considered proxies for prospectivity. It is demonstrated that little difference is seen between the results obtained for restraining and releasing fault bend and fault jog geometries. The fault geometries observed in the modelling to be the most prospective could be incorporated into exploration targeting strategies.
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Creus, Pieter K. "3D structural controls of the shear zone hosted Dugald River zinc-lead-silver deposit, Mount Isa Inlier, Australia." Thesis, 2022. https://researchonline.jcu.edu.au/76653/1/JCU_76653_Creus_2022_thesis.pdf.

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Pieter Creus undertook a detailed 3D structural geological study of the Dugald River Zn-Pb-Ag deposit. In the study he found that the deposit formed during two successive mineralisation events. The mineralisation model is a new style of shear-zone hosted Zinc mineralisation in the region.
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McLaren, Sandra N. (Sandra Noeline). "Long-term consequences of the redistribution of heat producing elements within the continental crust: Australian examples / Sandra N. McLaren." 2001. http://hdl.handle.net/2440/19839.

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Includes copies of articles co-authored by author during the preparation of this thesis in back pocket.
Includes bibliographical references (leaves 113-124).
viii, 172 leaves : ill. (some col.), maps ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Focuses on the impact of change in the distribution of heat producing elements on lithospheric thermal regimes and on temperature dependent processes such as metamorphism, magmatism and deformation, with application to Proteozoic Australia (Mount Isa and Mount Painter inliers).
Thesis (Ph.D.)--Adelaide University, Dept. of Geology and Geophysics, 2001
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McLaren, Sandra N. (Sandra Noeline). "Long-term consequences of the redistribution of heat producing elements within the continental crust: Australian examples / Sandra N. McLaren." Thesis, 2001. http://hdl.handle.net/2440/19839.

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Includes copies of articles co-authored by author during the preparation of this thesis in back pocket.
Includes bibliographical references (leaves 113-124).
viii, 172 leaves : ill. (some col.), maps ; 30 cm.
Focuses on the impact of change in the distribution of heat producing elements on lithospheric thermal regimes and on temperature dependent processes such as metamorphism, magmatism and deformation, with application to Proteozoic Australia (Mount Isa and Mount Painter inliers).
Thesis (Ph.D.)--Adelaide University, Dept. of Geology and Geophysics, 2001
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O'Brien, S. P. "Structural and mineralogical controls on the formation of the ‘Inter-lens’ at the Ernest Henry Deposit, Queensland." Thesis, 2016. http://hdl.handle.net/2440/121125.

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The Ernest Henry Iron-oxide Copper Gold (IOCG) deposit is by far the largest in the Eastern Succession of the Mount Isa Inlier. In the current genetic model, the release of CO2 from fluids sourced from enriched mantle was critical to brecciation and mineralisation. However, a weakly mineralised and brecciated shear zone within the orebody named the ‘Inter-lens’ separates the orebody into two distinct lenses. The Inter-lens was not well reported early in the life of the mine and has not been taken into account in the current ore deposit models. Establishing the relative timing of the Inter-lens structure provides strong geological constraints for the formation of the orebody. In this study, optical petrographic investigations, Scanning Electron Microscopy (SEM) and Mineral Liberation Analysis (MLA) were used to investigate the protolith. Key mineral relationships and textures were assessed to reveal the paragenesis of the Inter-lens. Structural observations in oriented drill core complemented underground mapping of exposures of the Inter-lens to reveal the deformational history of the Inter-lens with respect to the Ernest Henry orebody. The protolith was revealed to be Mount Fort Constantine Metavolcanics that have undergone intense deformation with a metasomatic evolution broadly consistent with the main orebody. Mineralisation stages overprinted tectonic fabrics via veining, replacement and infill, providing direct evidence that the Inter-lens is a pre-mineralisation structure. Preservation of the Inter-lens during brecciation and mineralisation of the Ernest Henry deposit requires that the currently accepted ‘explosive’ breccia model must be revised.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2016
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Austin, James R. "The Cloncurry Lineament: a long-lived deep crustal structure that acted as a metasomatic pathway during ca 1530-1500 Cu-Au mineralisation, Mount Isa Inlier, Australia." Thesis, 2007. https://researchonline.jcu.edu.au/18948/2/18948-austin-2007-thesis-chapters.pdf.

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Major geophysical lineaments are commonly associated with active to ancient faults at a variety of scales. They may correlate with the edges of rifts, depositional basins, orogenic belts or plate boundaries, and they commonly represent corridors along which deformation, mineralisation, magmatism and intra-crustal heat flow is concentrated. In many instances, they encompass a number of these features. The Cloncurry Lineament, a major feature in wavelet processed magnetic and gravity potential field (worm) data over the Mount Isa Inlier Eastern Succession, displays several such characteristics. It is over 200 km long and inferred to extend to at least 30 km depth. It delineates a contact between two major Paleoproterozoic sedimentary sequences, implying that it originated as a normal fault during rifting and basin formation. Magnetic forward modelling results suggest it corresponds to the eastern margin of a 5-10 km wide deformation zone within the calc-silicate Doherty Formation; the Cloncurry Fault Zone. The Cloncurry Fault Zone encompasses a continuum of deformation from ~1.6 to1.5 Ga. While D₁-D₂ deformation is regionally dominant, D₃ is more significant in the fault zone itself as evidenced by much lower temperatures during mylonitisation (500- 350°C) and the superimposition of mylonitic fabrics on Maramungee aged (~1550 Ma) granites. Mapping and structural fabric analysis of the Cloncurry Fault Zone show that D₃ involved WSW shortening, sub-perpendicular to a pre-existing basin-bounding fault. D₃ created an anastomosing shear zone system displaying variable slip vectors with synchronous variably NNW or SSE plunging folds. Penetrative fabrics are attributed to strain partitioning in the D₃ event, rather than a more complex history of overprinting. During D₄-D₅ a sinistral Riedel strike-slip fault system formed, coincident with massive Na-Ca brecciation. Intrusive magmatism and IOCG, Cu, and Au mineralisation also occurred during the D₃-D₅ history of the Cloncurry Fault Zone, highlighting its importance as a magmatic and hydrothermal pathway. Sodic-calcic (Na-Ca) metasomatism, associated with Cu-Au mineralisation in the Mount Isa Eastern Succession, is widely recognised but heterogeneously distributed, and difficult to map regionally. Hence, a method to map Na-Ca alteration remotely was developed. ASTER Band ratios were ineffective for mapping amphiboles and carbonates as a proxy for sodic-calcic alteration due to numerous mineral species having similar absorption features in ASTER band 8. Therefore, the low Kradiometric and highly magnetic properties of Na-Ca alteration were integrated with ASTER band 8 to form a Sodic-Calcic Alteration Index. The Index highlights albiteactinolite- magnetite assemblages that are coincident copper with Cu-Au mineralisation in the Eastern Succession, and the Index is useful for regional exploration in the Mount Isa Inlier. Weights-of-evidence analysis identifies the Cloncurry Lineament as an important crustal-scale control on Au, Au-Cu, Cu-Au, and Cu mineralisation, and autocorrelation is used to identify local structural controls within the broad regional control. This integrated approach, using worms and weights-of-evidence and autocorrelation, may prove a useful exploration tool for mineralised terrains under Phanerozoic cover. Mineralisation along the Cloncurry Lineament appears to be facilitated by two main factors. Firstly, it is associated with long, deep-crustal structure lying above dynamic lower crust/mantle, which has concentrated magmatism and metasomatism. Secondly, the associated structures have been repeatedly reactivated; increasing the chances that dilation may coincide in space and time with upflow of mineralising fluids to form a mineral deposit. These two factors appear to be consistent in several of the world's major mineralised lineaments.
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Books on the topic "Mount Isa Inlier"

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Geology of the Mount Isa Inlier and environs, Queensland and Northern Territory. Canberra: Australian Govt. Pub. Service, 1987.

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Hone, I. G. Physical property measurements on rock samples from the Mount Isa Inlier, northwest Queensland. Canberra: Australian Govt. Pub. Service, 1987.

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J, Stewart A., Blake, D. H., fl. 1967-, and Australia. Bureau of Mineral Resources, Geology and Geophysics., eds. Detailed studies of the Mount Isa inlier. Canberra: Australian Govt. Pub. Service, 1992.

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Book chapters on the topic "Mount Isa Inlier"

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Eriksson, K. A., E. L. Simpson, and M. J. Jackson. "Stratigraphical Evolution of a Proterozoic Syn-Rift to Post-Rift Basin: Constraints on the Nature of Lithospheric Extension in the Mount Isa Inlier, Australia." In Tectonic Controls and Signatures in Sedimentary Successions, 203–21. Oxford, UK: Blackwell Publishing Ltd., 2009. http://dx.doi.org/10.1002/9781444304053.ch12.

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Conference papers on the topic "Mount Isa Inlier"

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Horvath, Peter, and Jürgen Reinhardt. "LOW-PRESSURE, HIGH-TEMPERATURE METAPELITIC ROCKS FROM THE CENTRAL MOUNT ISA INLIER, NW QUEENSLAND, AUSTRALIA: NEW RESULTS FROM QUANTITATIVE PHASE DIAGRAM CALCULATIONS." In GSA Connects 2022 meeting in Denver, Colorado. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022am-380451.

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