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Tesi sul tema "Geology Australia"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 28 luglio 2024

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1

Morante, Richard. "Permian-Triassic stable isotope stratigraphy of Australia". Phd thesis, Australia : Macquarie University, 1996. http://hdl.handle.net/1959.14/47568.

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Abstract (sommario):
"September, 1995"
Thesis (Ph.D.) -- Macquarie University, School of Earth Sciences, 1996.
Bibliography: leaves 171-183.
Introduction -- Australian ð¹³Corg-isotope profiles about the Permian-Triassic (P/TR) boundary -- Strontium isotope seawater curve in the late Permian of Australia -- ð¹³Cco₃ AND ð¹⁸Oco₃ seawater profiles through the Permian-Triassic of Australasia -- Paleomagnetic stratigraphy about the Permian/Triassic boundary in Australia -- Synthesis.
The Permian-Triassic boundary mass extinction is the largest in the Phanerozoic and therefore is the major event in the Phanerozoic. The mass extinction cause is problematical but studying global geochemical and geophysical signatures about the Permian-Triassic boundary can provide insights into the cause of the mass extinction. Global events about the Permian-Triassic boundary are marked by changes in: ð¹³C values of carbon ; ⁸⁷Sr/⁸⁶Sr in unaltered marine calcite ; magnetic polarity. -- This study aims to identify these features in the sedimentary record and to test the ca libration of the Australian biostratigraphical schemes to the global geological timescale. The following features are found in the Permian-Triassic sediments of Australia: a ð¹³Corg in Total Organic Carbon excursion in 12 marine and nonmarine sections from Northwest to Eastern Australia ; a ⁸⁷Sr/⁸⁶Sr minimum in a composite section mainly from the Bowen Basin ; a magnetic polarity reversal in the Cooper Basin, central Australia. The Australian sections are thus time correlated, as follows: The negative ð¹³Corg excursion indicates the Permian-Triassic boundary and occurs: 1) in Eastern and Central Australia at the change from coal measures to barren measures with red beds at the beginning of the Early Triassic coal gap; 2) in Northwest Australia about the boundary between the Hyland Bay Formation and the Mount Goodwin Formation in the Bonaparte Basin and at the boundary between the Hardman Formation and the Blina Shale in the Canning Basin. The base of the negative ð¹³Corg excursion lies at or near the base of the Protohaploxypinus microcorpuspalynological zone. The ⁸⁷Sr/⁸⁶Sr minimum determined about the Guadalupian/Ochoan stage boundary in North America is found in the Bowen Basin about the boundary between the Ingelara and Peawaddy Formations. The ð¹³Corg excursion in the Cooper Basin is near a magnetic reversal within the Permo-Triassic mixed superchron. The implications of these findings include: confirmation of the traditional placement of the Permian-Triassic boundary at the coal measures/barren measures with redbeds boundary in Eastern Australia ; the linking of the the Permian-Triassic boundary to a mass extinction of plant species on land and the beginning of the Triassic coal gap indicated by the Falcisporites Superzone base that is coincident with the negative ð¹³Corg excursion ; a mass extinction causal model that links the ⁸⁷Sr/⁸⁶Sr minimum determined about the Guadalupian/Ochoan stage boundary to a fall in sealevel that led to changing global environmental conditions. The model invokes greenhouse warming as a contributing cause of the mass extinction.
Mode of access: World Wide Web.
xii, 183 leaves ill., maps
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2

Bullock, Michelle. "Holocene sediments and geological history, Woolley Lake, near Beachport, South Australia /". Adelaide : Thesis (B. Sc.(Hons)) -- University of Adelaide, Dept. of Geology and Geophysics, 1994. http://web4.library.adelaide.edu.au/theses/09SB/09sbb938.pdf.

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3

Shafik, Samir. "Late Cretaceous, early Tertiary calcareous nannofossils from Australia". Title page, contents and summary only, 1989. http://hdl.handle.net/2440/19212.

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4

Dove, Melissa B. "The geology, petrology, geochemistry and isotope geology of the eastern St Peter Suite western Gawler Graton, South Australia /". Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09SB/09sbd743.pdf.

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Abstract (sommario):
Thesis (B. Sc.(Hons))--University of Adelaide, Dept. of Geology and Geophysics, 1998.
National Grid Reference 1:250 000 Geological Series Sheet SI 53-2 and Sheet SI 53-6. Includes bibliographical references (6 leaves ).
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5

Swart, Rosemary Helen. "Environmental protection of geological monuments in South Australia /". Title page, contents and abstract only, 1992. http://web4.library.adelaide.edu.au/theses/09ENV/09envs973.pdf.

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6

Williamson, Grant. "The geology and origin of manganese deposits at Pernatty Lagoon, South Australia /". Title page, table of contents and abstract only, 1987. http://web4.library.adelaide.edu.au/theses/09SB/09sbw729.pdf.

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7

Millikan, Michael I. "The quaternary geology of the Pelican Lagoon area, Kangaroo Island, South Australia /". Title page, table of contents and abstract only, 1994. http://web4.library.adelaide.edu.au/theses/09S.B/09s.bm654.pdf.

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Abstract (sommario):
Thesis (B. Sc.(Hons.))--University of Adelaide, Dept. of Geology and Geophysics, 1995.
Australian National Grid Reference Penneshaw Sheet (SI 53) 6426-I 1: 50 000. Includes bibliographical references.
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8

Wirtz, Peter D. "The quaternary geology of the American River area, Kangaroo Island, South Australia /". Title page, contents and abstract only, 1994. http://web4.library.adelaide.edu.au/theses/09SB/09sbw799.pdf.

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Abstract (sommario):
Thesis (B. Sc.(Hons.))--University of Adelaide, Dept. of Geology and Geophysics, 1995.
Australian National Grid Reference Penneshaw Sheet (SI 53) 6246-I 1: 50 000. One col. folded map in pocket, inside back cover. Includes bibliographical references.
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9

Rankine, Graham M. "Gold metallogeny of Australia". Thesis, Rhodes University, 1987. http://hdl.handle.net/10962/d1004676.

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Abstract (sommario):
The gold metallogeny of Australia is predominantly confined to the Archaean and Palaeozoic Provinces. The Archaean gold occurrences are predominantly hosted in ultramafic-mafic dominated greenstone belts, with less associated tofelsic-volcanic and sedimentary sequences. Most gold occurrences are confined to shear zones or faults, and adjacent discoveries of economic laterite-hosted deposits, host rocks. Recent are presently under investigation and will supply a significant proportion of production in the future. The Proterozoic gold deposits of Australia , are confined to geosyncinal sequences, commonly turbidites (eg: Telfer), with other hydrothermal deposits associated directly to granites. An important feature of the North Australian Craton deposits, is the spatial association of most deposits to granite bodies, although a genetic link has not been established conclusively. The Roxby Downs deposit in South Australia is a unique occurrence of gold in association to copper, uranium and R.E.E. This deposit is tentatively related to intraplate alkaline-magmatism, with further work necessary. The most significant recent discovery of gold mineralization in Australia is in the Drummond Basin in Queensland. This epithermal is tentatively related to mineralization within the Georgetown Inlier. The latter mineralization is Permo-Carboniferous, in a Proterozoic (and possibly Archaean) sequence of schists. It is tentatively suggested that all the gold mineralization in northern Queensland may be related to single tectonic event, a feature which requires further study . Other mineralization in the Phanerozoic includes the turbidite-hosted metamorphogenic deposits of Victoria, the rift related deposits in New South Wales and magmatic related deposits in Queensland. The gold deposits in Australia may in the future be classified in a tectonogeological framework, similiar to the layout of this dissertation, particularly once further data becomes available on recent discoveries.
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10

Wycherley, Helen Louise. "Origins and distribution of carbon dioxide and associated gases, Cooper Basin, Australia". Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270974.

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11

Hapugoda, Hapugoda Udage Sarath. "Late Archaean and Early Proterozoic crustal evolution of the Georgetown Block, Northeast Queensland, Australia /". St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16503.pdf.

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12

Ruth, Dawn C. S. "Impact Spherules From Western Australia : A Textural Analysis of Really Old Tiny Rocks". Oberlin College Honors Theses / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=oberlin1411722854.

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13

Hull, Jonathan N. F. "Sequence stratigraphic evolution of the Albian to recent section of the Dampier Sub-basin, North West Shelf, Australia". Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phh9128.pdf.

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Abstract (sommario):
Four folded maps in pocket on back cover. Copy of author's previously published work inserted. Includes bibliographical references (9 leaves). An integrated biostratigraphic, wireline, seismic, lithological and 3D-Chronostrat sequence stratigraphic study has been conducted to investigate the evolution of the Albian to recent section of the Dampier Sub-basin on Australia's North West Shelf,.
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14

Haidarian, Mohammad Reza. "Aeromagnetic interpretation of a section of the Willyama Inliers in the Curnamona Craton, South Australia /". Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phh149.pdf.

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15

Coxon, Brian Duncan. "Lateritisation and secondary gold distribution with particular reference to Western Australia". Thesis, Rhodes University, 1993. http://hdl.handle.net/10962/d1005586.

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Abstract (sommario):
Lateritisation is associated with tropical climates and geomorphic conditions of peneplanation where hydromorphic processes of weathering predominate. Laterites are products of relative (residual) and absolute(chemical) accumulation after leaching of mobile constituents. Their major element chemistry is controlled by the aluminous character of bedrock and drainage. Bauxitisation is characterised by residual gibbsite neoformation and lateritisation, by both residual accumulation and hydromorphic precipitation of goethite controlled by the redox front at the water table. The laterite forms part of a weathering profile that is underlain by saprock, saprolite, the mottled zone and overlain by a soil horizon. The secondary gold in laterites has its source invariably with mineralised bedrock. The distribution of secondary gold is controlled by mechanical eluviation and hydromorphic processes governed by organic, thiosulphate and chloride complexing. The precipitation of secondary gold is controlled by pH conditions, stability of the complexing agent and ferrolysis. Gold-bearing laterites are Cainozoic in age and are best developed on stable Archean and Proterozoic cratons that have suffered epeirogenesis since lateritisation. Mechanical eluviation increases in influence at the expense of hydromorphic processes as a positive function of topographic slope and degradation rate. Gradients greater than 10⁰ are not conducive for lateritisation, with latosols forming instead. High vertical degradation rates may lead to the development of stone lines. In the Western Australian case, post-laterite aridification has controlled the redistribution of secondary gold at levels marked by stabilisation of the receding palaeowater table. Mineable reserves of lateritic ore are located at Boddington, Westonia and Gibson toward the south-west of the Yilgarn Block. A significant controlling variable appears to be the concentration of chloride in the regolith. Based on the Boddington model, the laterite concentrates the following elements from bedrock gold lodes: i) Mo, Sb, W, Hg, Bi and Au as mobile constituents. ii) As and Pb as immobile constituents. Geochemical sampling of ferruginous lag after bedrock and laterite has provided dispersed anomalies that are easily identifiable. "Chalcophile corridors" up to 150 km in length are defined broadly by As and Sb but contain more discrete anomalies of Bi, Mo, Ag, Sn, W, Se or Au, in the Yilgarn Block. The nature of the weathered bedrock, the tabular distribution of secondary gold ore deposition and the infrastructural environment lends the lateritic regolith to low cost, open-cut mining. The western Australian lateritic-gold model perhaps can be adapted and modified for use elsewhere in the world.
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16

Schaefer, Bruce F. "Insights into protenozoic tectonics from the southern Eyre Peninsula, South Australia /". Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phs2938.pdf.

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17

Hein, Kim A. A. "The geology and genesis of mineralization at the Tarcoola Goldfield, Tarcoola, South Australia /". Title page, contents and abstract only, 1989. http://web4.library.adelaide.edu.au/theses/09SB/09sbh468.pdf.

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18

Szmidel, Rebekah. "The structural geology of Sellick Hill to Myponga Beach, Fleurieu Peninsula, South Australia /". Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09SB/09sbs998.pdf.

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Abstract (sommario):
Thesis (B. Sc.(Hons.))--University of Adelaide, Dept. of Geology and Geophysics, 1996.
National Grid reference (SI-54)6527 - II, (SI-54) 6627 - III 1:10 000 sheet. Includes bibliographical references (leaves 32-39).
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19

Pʻu-chʻüan, Ting. "Structural and tectonic evolution of the Eastern Arunta Inlier in the Harts Range area of Central Australia /". Title page, contents and abstract only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phd5839.pdf.

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Abstract (sommario):
Thesis (Ph. D.)--University of Adelaide, 1989.
Typescript (Photocopy). Copies of 4 published papers co-authored by author, and 7 maps, in back cover pocket. Includes bibliographical references (leaves 203-218).
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20

Smith, Michael S. "Development, hydrology and salinisation of the regolth at Bamganie-Meredith, Victoria, Australia". Thesis, Federation University Australia, 2001. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/164964.

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Abstract (sommario):
The thesis looks at landscape evolution and salinisation in the Bamganie-Meredith region of Victoria. The importance of reducing waterlogging is stressed if successful land management is to be achieved.
Master of Applied Science
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21

Van, der Linden Thérèse E. (Thérèse Elizabeth). "Depositional facies, cyclicity and sequence stratigraphy of the oligo-myocene Torquay Basin, Southeastern Australia". Thesis, The University of Sydney, 1997. https://hdl.handle.net/2123/27648.

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Abstract (sommario):
The Torquay Group outcrops between Bells Headland and Bird Rock, southwest of Torquay on the coast of Victoria. It formed part of the basis of the Haq et al. (1988) sealevel Curve, and has been portrayed as a classical example of sequence stratigraphic development generated by global eustatic oscillations. This study tests that assertion, based on a detailed investigation of the sedimentology and stratigraphy within the Torquay section, using mainly three cores from the larger Torquay Drilling Program, supplemented by cliff face stratigraphic sections from the present and previous studies.
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22

Burgess, Jamie M. "Carbon isotope stratigraphy of the interglacial Umberatana Group, Adelaide, Fold Belt, South Australia /". Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phb9552.pdf.

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23

Thomson, Kirstie. "Evolutionary patterns and consequences of developmental mode in Cenozoic gastropods from southeastern Australia". Thesis, University of Liverpool, 2013. http://livrepository.liverpool.ac.uk/17953/.

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Abstract (sommario):
Gastropods, like many other marine invertebrates undergo a two-stage life cycle. As the adult body plan results in narrow environmental tolerances and restricted mobility, the optimum opportunity for dispersal occurs during the initial larval phase. Dispersal is considered to be a major influence on the evolutionary trends of different larval strategies. Three larval strategies are recognised in this research: planktotrophy, lecithotrophy and direct development. Planktotrophic larvae are able to feed and swim in the plankton resulting in the greatest dispersal potential. Lecithotrophic larvae have a reduced planktic period and are considered to have more restricted dispersal. The planktic period is absent in direct developing larvae and therefore dispersal potential in these taxa is extremely limited. Each of these larval strategies can be confidently inferred from the shells of fossil gastropods and the evolutionary trends associated with modes of development can be examined using both phylogenetic and non-phylogenetic techniques. This research uses Cenozoic gastropods from southeastern Australia to examine evolutionary trends associated with larval mode. To ensure the species used in analyses are distinct and correctly assigned, a taxonomic review of the six families included in this study was undertaken. The families included in this study were the Volutidae, Nassariidae, Raphitomidae, Borsoniidae, Mangeliidae and Turridae. Phylogenetic analyses were used to examine the relationships between taxa and to determine the order and timing of changes in larval mode throughout the Cenozoic. Traditionally, planktotrophy has been considered the ancestral mode of development. However, using maximum parsimony and maximum-likelihood analysis, this research suggests that the ancestral developmental mode cannot be confidently determined in gastropods from southeastern Australia. Similarly, evidence that transitions between larval strategies might be reversible contradicts the general view that regaining the specialised structures associated with planktotrophy is so difficult that it is considered extremely unlikely to occur. When the timing of switches in larval mode was examined they were found to be scattered at different points in time rather than clustered to specific periods and therefore no inference can be made as to the likely factors driving transitions between larval modes. The correlation between mode of development and macroevolutionary trends was examined using non-phylogenetic techniques. The results do not concur with the hypothesis that species with planktotrophic larvae will exhibit wider geographic ranges, longer species durations and lower speciation rates then lecithotrophic or direct developing taxa. The analyses are thought to be hindered by a strong preservation bias and gaps within the fossil record. The quality of the fossil record and the congruence between phylogenies and stratigraphy is examined using the Stratigraphic Consistency Index, the Relative Completeness Index and the Gap Excess Ratio.
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24

Paul, Eike Gunther. "The geometry and controls on basement-involved deformation in the Adelaide Fold Belt, South Australia /". Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09php3241.pdf.

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25

Kennedy, Sean. "A study of the Patchawarra Formation, Tirrawarra Field, Southern Cooper Basin, South Australia". Title page, contents and abstract only, 1988. http://web4.library.adelaide.edu.au/theses/09SM/09smk36.pdf.

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26

Green, Michael Godfrey. "Early archaean crustal evolution evidence from 3̃.5 billion year old greenstone successions in the Pilgangoora Belt, Pilbara Craton, Australia /". Connect to full text, 2001. http://hdl.handle.net/2123/505.

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Abstract (sommario):
Thesis (Ph. D.)--University of Sydney, 2002.
Title from title screen (viewed Apr. 23, 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Geosciences, Division of Geology and Geophysics. Degree awarded 2002; thesis submitted 2001. Includes bibliography. Also available in print form.
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27

Allen, Rosemary. "Relationship of thermal evolution to tectonic processes in a proterozoic fold belt : Halls Creek Mobile Zone, East Kimberley, West Australia /". Title page, contents and introduction only, 1986. http://web4.library.adelaide.edu.au/theses/09PH/09pha4288.pdf.

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28

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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Abstract (sommario):
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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29

Krcmarov, Robert. "The geology, petrology and geochemistry of the volcanic unit at Olympic Dam, South Australia /". Title page, contents and abstract only, 1987. http://web4.library.adelaide.edu.au/theses/09SB/09sbk91.pdf.

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30

Rohrlach, Bruce D. "The structural geology and mineralization at the Reedy's Gold Mines, Murchison Goldfield, Western Australia /". Title page, abstract and contents only, 1987. http://web4.library.adelaide.edu.au/theses/09SB/09sbr739.pdf.

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31

Randabel, Joseph Pierre Jerome. "The geology of the Snug Cove area, north west coast Kangaroo Island, South Australia /". Adelaide, 1992. http://web4.library.adelaide.edu.au/theses/09S.B/09s.br187.pdf.

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Abstract (sommario):
Thesis (B. Sc.(Hons.))--University of Adelaide, Dept. of Geology and Geophysics, 1992.
"National grid reference: Snug Cove SI-53-6226-1. Australia 1:50000 series and Kingscote SI-53-16 1:250000 sheet." Includes bibliographical references.
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32

Barrett, Lyon. "The structural geology of the Rapid Bay-Second Valley area, Fleurieu Peninsula, South Australia /". Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09SB/09sbb274.pdf.

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33

Hopper, Derek J. "Crustal evolution of paleo- to mesoproterozoic rocks in the Peake and Denison Ranges, South Australia /". [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18288.pdf.

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34

Norman, Anthony Richard. "A structural analysis of the southern Hornsby plateau, Sydney Basin". Thesis, The University of Sydney, 1986. http://hdl.handle.net/2123/15656.

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35

Redfern, Jonathan. "The sedimentology and stratigraphy of the Permo-Carboniferous Grant Group, Barbwire Terrace, Canning Basin, Western Australia". Thesis, University of Bristol, 1990. http://hdl.handle.net/1983/79d4d3ba-71cb-4e52-8f26-d4acd7fa27f0.

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Abstract (sommario):
The Canning Basin is a large intra-cratonic basin which underlies an onshore area of 430,000sq. km. The study area, located on the Barbwire Terrace, contains a series of stratigraphic boreholes drilled by Western Mining Corporation Ltd., which provide fully cored sections through the previously poorly exposed Grant Group. From this core, integrated with seismic data and wireline logs, the Grant Group has been divided into three new formations, each containing a number of distinctive and intimately related facies types. The basal Hoya Formation comprises a complex suite of interbedded diamictites, sandstones and mudstones. The diamictites are interpreted as lodgement tills, melt-out tills and flow tills, deposited from the retreating ice sheet. Interbedded with the diamictites are massive and laminated mudstones, deposited under fluctuating marine and lacustrine conditions. Stacked cross-bedded sandstone units are restricted to the west of the study area, forming subsurface linear mounded features, clearly displayed on the regional seismic. These sandstones are interpreted to be deposited from braided fluvial outwash systems. However, the majority of sandstones are massive and normally graded, of mass-flow origin, deposited from a series of subaqueous fans fed by meltwater from the ice sheet. The overlying Calytrix Formation contains a thin basal sandstone unit, rich in marine fauna, but is characterised by a thick sequence of basinal mudstones. It is overlain by the Clianthus Formation, which has a basal fluvial sandstone unit, capped by heterolithic sandstones, siltstones and mudstones, interpreted to be shallow marine shelf deposits. The Grant Group sediments record the gradual deglaciation of the basin, and indicate that the ice sheet was extensive during the Perm- Carboniferous. The Hoya Formation contains all the glaciogenic sediments, and provides evidence for periodic ice advance and retreat. The mudrock dominated Calytrix Formation is interpreted to reflect the rise in sea level subsequent to the main deglaciation phase, and the regressive package of sediments that form the Clianthus Formation result from isostatic uplift and basin fill under post glacial conditions.
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36

Haines, Peter W. "Carbonate shelf and basin sedimentation, late Proterozoic Wonoka Formation, South Australia /". Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09phh152.pdf.

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37

Greenfield, John Edward. "Migmatite formation at Mt. Stafford, Central Australia". Phd thesis, Department of Geology and Geophysics, 1997. http://hdl.handle.net/2123/10592.

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38

Shen, Jian-Wei. "Effects of differing tectono-stratigraphic settings on late Devonian and early carboniferous reefs, Western Australia, Eastern Australia, South China, and Japan /". St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17417.pdf.

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39

Conor, Colin H. H. "The geology of the Eateringinna 1:100 000 sheet area, eastern Musgrave Block, South Australia /". Title page, contents and abstract only, 1987. http://web4.library.adelaide.edu.au/theses/09SM/09smc753.pdf.

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40

Marsh, Stuart Harry. "Geological mapping in the proterozoic Mt. Isa Inlier, Queensland, Australia, using radiometric and multispectral remotely sensed data". Thesis, Durham University, 1992. http://etheses.dur.ac.uk/5723/.

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Abstract (sommario):
Landsat Thematic Mapper, NSOOl Aircraft Thematic Mapper, Geoscan Mk. II. Multispectral Scanner and Airborne Gamma Radiometric data have been used to address a variety of geological problems in the Mary Kathleen area, 60 km east of Mt. Isa, NW Queensland. This area forms part of the Cloncurry Complex, a structurally complicated mass of diverse igneous and metamorphic rocks in the Precambrian Mt. Isa Inlier for which many stratigraphic problems remain to be solved. The Landsat Thematic Mapper data have been the most extensively used in this study. They are the least problematic data type and provide new geological information at scales up to 1:50 000. The NSOOl Aircraft Thematic Mapper data have similar spectral but superior spatial resolution in comparison with the satellite data. They suffer from increased geometric and noise-related problems, but the increase in spatial resolution has allowed the solution of problems, at scales up to 1:10 000, which could not be comprehensively addressed with the satellite data. The higher spectral resolution Geoscan Mk. II Multispectral Scanner aircraft data used in the latter part of the study can be used to remotely identify surface mineralogy. The logarithmic residual technique has proved the most successful approach to enhancing the radiance data sets. When applied to the lower spectral resolution data the technique achieves good discrimination of most lithologies, produces an albedo image useful for structural mapping and yields more information than can be extracted using conventional techniques. When applied to the higher spectral resolution data the technique allows remote mineral identification. Many of the geological problems in the area have been wholly or partially solved using suitably processed radiance data. The Airborne Gamma Radiometric data have the lowest spatial resolution. Only discrimination has been possible with this data set. These data contain no terrain information and are therefore difficult to use in the field. Integration of the gamma radiometric data with satellite data has been successful in overcoming this problem. The gamma radiometric data have allowed the separation of some lithologies which cannot be separated using the radiance data sets but have contrasting radiometric counts.
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41

Morrison, Christopher S. "A regional investigation of the thermal and fluid flow history of the Drummond Basin, Central Queensland, Australia /". St. Lucia, Qld, 2002. http://adt.library.uq.edu.au/public/adt-QU20030526.073825/index.html.

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42

Quintavalle, Marco. "Lower to Middle Ordovician palynomorphs of the Canning Basin, Western Australia /". [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18370.pdf.

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43

Shi, Zhiqun. "Automatic interpretation of potential field data applied to the study of overburden thickness and deep crustal structures, South Australia". Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phs5548.pdf.

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Bibliography: leaves 189-203. Deals with two interpretation methods, a computer program system AUTOMAG and spectral analysis, used for studying overburden thickness and density structure of the crust. The methods were applied to the Gawler Craton, Eyre Peninsula.
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44

Scowen, Pamela Anne Hadleigh. "The geology and geochemistry of the Narndee intrusion, Western Australia". Phd thesis, 1991. http://hdl.handle.net/1885/140643.

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45

Dowell, Katherine Margaret. "Precious opals in Australia". Master's thesis, 2008. http://hdl.handle.net/1885/148372.

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46

Cooper, Steven Alan. "Geology, development, & economics of zeolite mining in Australia". Thesis, 1993. https://eprints.utas.edu.au/18869/1/whole_CooperStevenAlan1993_thesis.pdf.

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Zeolite mining in Australia has been developing at a steady, if slow pace since late 1987, when the first Australian zeolite mine commenced operation at Escott. This inaugural economic deposit, likely to be joined by others, is situated in altered ignimbrite, air fall pyroclastic, and volcaniclastic lacustrine sediments of the Late Carboniferous Currabubula Formation in north-eastern New South Wales. The Early Carboniferous Ducabrook Formation of the Drummond Basin in central Queensland is another zeolite deposit with good economic potential. While generally the regional geology for each deposit is relatively simple and understood, characterisation of the zeolitic mineralisation has been determined by a wide range of geochemical, petrological, physical, SEM, and recently thermal XRD and nuclear magnetic resonance (NMR) methods. Studies have confirmed that the prominent zeolite mineral mined at Escott is low thermal stability. Ca-clinoptilolite, and that this zeolite mineral is likely at the other prospects. This Characterisation is important as the natural zeolitic rock produced has physical properties (density, hardness, age, etc.) different from most overseas zeolitic rocks, thereby requiring specific trials to be developed to examine the application of its different properties. Also, different deposits show physical and chemical variations that might play an unknown part in performance for particular markets. The aim of this study is to compile and obtain new information of the characterisation of the Australian natural zeolites, in the manner outlined by Sheppard (1983). Such determination is essential for establishing a rational basis for the commercial use and application research of natural zeolites. No systematic compilation or examination had been made to date on the increasingly large amount of laboratory and exploration material collected over six years. It is hoped that this thesis provides a reference source, both for geological and other disciplines utilising zeolites. A starting point for any new zeolite deposit is the established characterisation methods for natural zeolitic rocks developed by the New South Wales Department of Mineral Resources (Fredrickson, 1986). Sale and marketing information gained in' Australian over its six year history has shown the importance of working with clients, and the development of innovative technology for the utilisation of natural zeolites (Stephen & Gout, 1993). Product development has ranged over packaging, particle sizing and selective high grade mining, with strong encouragement for bilateral communication with potential clients during trialing. Main barriers to expanded growth in some markets are milling and freight costs, which are currently being addressed. Future developments will include chemical and physical modification of the natural zeolite to meet certain client requirements. One threat to market development is the potential health implications of the fibrous zeolite erionite currently mined overseas. The natural zeolite industry in Australia is established, with total invoiced sales to date of over a million dollars, but growth is slow and difficult due to volume related inefficiencies resulting in high costs and slow consumer appreciation of the products. Geological studies have been minimal due to the need for low cost development, but this has changed with the realisation that detailed characterisation is essential. The role of the geologist has thus also changed, from that of active exploration, to technical coordinator for a mineral group with extremely wide product applications.
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47

Wade, Benjamin P. "Unravelling the tectonic framework of the Musgrave Province, Central Australia". Thesis, 2006. http://hdl.handle.net/2440/57768.

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Abstract (sommario):
The importance of the Musgrave Province in continental reconstructions of Proterozoic Australia is only beginning to be appreciated. The Mesoproterozoic Musgrave Province sits in a geographically central location within Australia and is bounded by older and more isotopically evolved regions including the Gawler Craton of South Australia and Arunta Region of the Northern Territory. Understanding the crustal growth and deformation mechanisms involved in the formation of the Musgrave Province, and also the nature of the basement that separates these tectonic elements, allows for greater insight into defining the timing and processes responsible for the amalgamation of Proterozoic Australia. The ca. 1.60-1.54 Ga Musgravian Gneiss preserves geochemical and isotopic signatures related to ongoing arc-magmatism in an active margin between the North Australian and South Australian Cratons (NAC and SAC). Characteristic geochemical patterns of the Musgravian Gneiss include negative anomalies in Nb, Ti, and Y, and are accompanied by steep LREE patterns. Also characteristic of the Musgravian Gneiss is its juvenile Nd isotopic composition (ɛNd1.55 values from -1.2 to +0.9). The juvenile isotopic signature of the Musgravian Gneiss separates it from the bounding comparitively isotopically evolved terranes of the Arunta Region and Gawler Craton. The geochemical and isotopic signatures of these early Mesoproterozoic felsic rocks have similarities with island arc systems involving residual Ti-bearing minerals and garnet. Circa 1.40 Ga metasedimentary rocks of the eastern Musgrave Province also record vital evidence for determining Australia.s location and fit within a global plate reconstruction context during the late Mesoproterozoic. U-Pb detrital zircon and Sm-Nd isotopic data from these metasedimentary rocks suggests a component of derivation from sources outside of the presently exposed Australian crust. Best fit matches come from rocks originating from eastern Laurentia. Detrital zircon ages range from Palaeoproterozoic to late Mesoproterozoic, constraining the maximum depositional age of the metasediments to approximately 1.40 Ga, similar to that of the Belt Supergroup in western Laurentia. The 1.49-1.36 Ga detrital zircons in the Musgrave metasediments are interpreted to have been derived from the voluminous A-type suites of Laurentia, as this time period represents a “magmatic gap” in Australia, with an extreme paucity of sources this age recognized. The metasedimentary rocks exhibit a range of Nd isotopic signatures, with ɛNd(1.4 Ga) values ranging from -5.1 to 0.9, inconsistent with complete derivation from Australian sources, which are more isotopically evolved. The isotopically juvenile ca. 1.60-1.54 Ga Musgravian Gneiss is also an excellent candidate for the source of the abundant ca. 1.6-1.54 Ga detrital zircons within the lower sequences of the Belt Supergroup. If these interpretations are correct, they support a palaeogeographic reconstruction involving proximity of Australia and Laurentia during the pre-Rodinia Mesoproterozoic. This also increases the prospectivity of the eastern Musgrave Province to host a metamorphised equivalent of the massive Pb-Zn-Ag Sullivan deposit. The geochemical and isotopic signatures recorded in mafic-ultramafic rocks can divulge important information regarding the state of the sub continental lithospheric mantle (SCLM). The voluminous cumulate mafic-ultramafic rocks of the ca. 1.08 Ga Giles Complex record geochemical and Nd-Sr isotopic compositions consistent with an enriched parental magma. Traverses across three layered intrusions, the Kalka, Ewarara, and Gosse Pile were geochemically and isotopically analysed. Whole rock samples display variably depleted to enriched LREE patterns when normalised to chondrite ((La/Sm)N = 0.43-4.72). Clinopyroxene separates display similar depleted to enriched LREE patterns ((La/Sm)N = 0.37-7.33) relative to a chondritic source. The cumulate rocks display isotopically evolved signatures (ɛNd ~-1.0 to .5.0 and ɛSr ~19.0 to 85.0). Using simple bulk mixing and AFC equations, the Nd-Sr data of the more radiogenic samples can be modelled by addition of ~10% average Musgrave crust to a primitive picritic source, without need for an enriched mantle signature. Shallow decompressional melting of an asthenospheric plume source beneath thinned Musgravian lithosphere is envisaged as a source for the parental picritic magma. A model involving early crustal contamination within feeder zones is favoured, and consequently explorers looking for Ni-Cu-Co sulphides should concentrate on locating these feeder zones. Few absolute age constraints exist for the timing of the intracratonic Petermann Orogeny of the Musgrave Province. The Petermann Orogeny is responsible for much of the lithospheric architecture we see today within the Musgrave Province, uplifting and exhuming large parts along crustal scale E-W trending fault/shear systems. Isotopic and geochemical analysis of a suite of stratigraphic units within the Neoproterozoic to Cambrian Officer Basin to the immediate south indicate the development of a foreland architecture at ca. 600 Ma. An excursion in ɛNd values towards increasingly less negative values at this time is interpreted as representing a large influx of Musgrave derived sediments. Understanding the nature of the basement separating the SAC from the NAC and WAC is vital in constructing models of the amalgamation of Proterozoic Australia. This region is poorly understood as it is overlain by the thick sedimentary cover of the Officer Basin. However, the Coompana Block is one place where basement is shallow enough to be intersected in drillcore. The previously geochronologically, geochemically, and isotopically uncharacterised granitic gneiss of the Coompana Block represents an important period of within-plate magmatism during a time of relative magmatic quiescence in the Australian Proterozoic. U-Pb LA-ICPMS dating of magmatic zircons provides an age of ca. 1.50 Ga, interpreted as the crystallisation age of the granite protolith. The samples have distinctive A-type chemistry characterised by high contents of Zr, Nb, Y, Ga, LREE with low Mg#, Sr, CaO and HREE. ɛNd values are high with respect to surrounding exposed crust of the Musgrave Province and Gawler Craton, and range from +1.2 to +3.3 at 1.5 Ga. The tectonic environment into which the granite was emplaced is also unclear, however one possibility is emplacement within an extensional environment represented by interlayered basalts and arenaceous sediments of the Coompana Block. Regardless, the granitic gneiss intersected in Mallabie 1 represents magmatic activity during the “Australian magmatic gap” of ca. 1.52-1.35 Ga, and is a possible source for detrital ca. 1.50 zircons found within sedimentary rocks of Tasmania and Antarctica, and metasedimentary rocks of the eastern Musgrave Province.
Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2006
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48

Wade, Benjamin P. "Unravelling the tectonic framework of the Musgrave Province, Central Australia". 2006. http://hdl.handle.net/2440/57768.

Testo completo
Abstract (sommario):
The importance of the Musgrave Province in continental reconstructions of Proterozoic Australia is only beginning to be appreciated. The Mesoproterozoic Musgrave Province sits in a geographically central location within Australia and is bounded by older and more isotopically evolved regions including the Gawler Craton of South Australia and Arunta Region of the Northern Territory. Understanding the crustal growth and deformation mechanisms involved in the formation of the Musgrave Province, and also the nature of the basement that separates these tectonic elements, allows for greater insight into defining the timing and processes responsible for the amalgamation of Proterozoic Australia. The ca. 1.60-1.54 Ga Musgravian Gneiss preserves geochemical and isotopic signatures related to ongoing arc-magmatism in an active margin between the North Australian and South Australian Cratons (NAC and SAC). Characteristic geochemical patterns of the Musgravian Gneiss include negative anomalies in Nb, Ti, and Y, and are accompanied by steep LREE patterns. Also characteristic of the Musgravian Gneiss is its juvenile Nd isotopic composition (ɛNd1.55 values from -1.2 to +0.9). The juvenile isotopic signature of the Musgravian Gneiss separates it from the bounding comparitively isotopically evolved terranes of the Arunta Region and Gawler Craton. The geochemical and isotopic signatures of these early Mesoproterozoic felsic rocks have similarities with island arc systems involving residual Ti-bearing minerals and garnet. Circa 1.40 Ga metasedimentary rocks of the eastern Musgrave Province also record vital evidence for determining Australia.s location and fit within a global plate reconstruction context during the late Mesoproterozoic. U-Pb detrital zircon and Sm-Nd isotopic data from these metasedimentary rocks suggests a component of derivation from sources outside of the presently exposed Australian crust. Best fit matches come from rocks originating from eastern Laurentia. Detrital zircon ages range from Palaeoproterozoic to late Mesoproterozoic, constraining the maximum depositional age of the metasediments to approximately 1.40 Ga, similar to that of the Belt Supergroup in western Laurentia. The 1.49-1.36 Ga detrital zircons in the Musgrave metasediments are interpreted to have been derived from the voluminous A-type suites of Laurentia, as this time period represents a “magmatic gap” in Australia, with an extreme paucity of sources this age recognized. The metasedimentary rocks exhibit a range of Nd isotopic signatures, with ɛNd(1.4 Ga) values ranging from -5.1 to 0.9, inconsistent with complete derivation from Australian sources, which are more isotopically evolved. The isotopically juvenile ca. 1.60-1.54 Ga Musgravian Gneiss is also an excellent candidate for the source of the abundant ca. 1.6-1.54 Ga detrital zircons within the lower sequences of the Belt Supergroup. If these interpretations are correct, they support a palaeogeographic reconstruction involving proximity of Australia and Laurentia during the pre-Rodinia Mesoproterozoic. This also increases the prospectivity of the eastern Musgrave Province to host a metamorphised equivalent of the massive Pb-Zn-Ag Sullivan deposit. The geochemical and isotopic signatures recorded in mafic-ultramafic rocks can divulge important information regarding the state of the sub continental lithospheric mantle (SCLM). The voluminous cumulate mafic-ultramafic rocks of the ca. 1.08 Ga Giles Complex record geochemical and Nd-Sr isotopic compositions consistent with an enriched parental magma. Traverses across three layered intrusions, the Kalka, Ewarara, and Gosse Pile were geochemically and isotopically analysed. Whole rock samples display variably depleted to enriched LREE patterns when normalised to chondrite ((La/Sm)N = 0.43-4.72). Clinopyroxene separates display similar depleted to enriched LREE patterns ((La/Sm)N = 0.37-7.33) relative to a chondritic source. The cumulate rocks display isotopically evolved signatures (ɛNd ~-1.0 to .5.0 and ɛSr ~19.0 to 85.0). Using simple bulk mixing and AFC equations, the Nd-Sr data of the more radiogenic samples can be modelled by addition of ~10% average Musgrave crust to a primitive picritic source, without need for an enriched mantle signature. Shallow decompressional melting of an asthenospheric plume source beneath thinned Musgravian lithosphere is envisaged as a source for the parental picritic magma. A model involving early crustal contamination within feeder zones is favoured, and consequently explorers looking for Ni-Cu-Co sulphides should concentrate on locating these feeder zones. Few absolute age constraints exist for the timing of the intracratonic Petermann Orogeny of the Musgrave Province. The Petermann Orogeny is responsible for much of the lithospheric architecture we see today within the Musgrave Province, uplifting and exhuming large parts along crustal scale E-W trending fault/shear systems. Isotopic and geochemical analysis of a suite of stratigraphic units within the Neoproterozoic to Cambrian Officer Basin to the immediate south indicate the development of a foreland architecture at ca. 600 Ma. An excursion in ɛNd values towards increasingly less negative values at this time is interpreted as representing a large influx of Musgrave derived sediments. Understanding the nature of the basement separating the SAC from the NAC and WAC is vital in constructing models of the amalgamation of Proterozoic Australia. This region is poorly understood as it is overlain by the thick sedimentary cover of the Officer Basin. However, the Coompana Block is one place where basement is shallow enough to be intersected in drillcore. The previously geochronologically, geochemically, and isotopically uncharacterised granitic gneiss of the Coompana Block represents an important period of within-plate magmatism during a time of relative magmatic quiescence in the Australian Proterozoic. U-Pb LA-ICPMS dating of magmatic zircons provides an age of ca. 1.50 Ga, interpreted as the crystallisation age of the granite protolith. The samples have distinctive A-type chemistry characterised by high contents of Zr, Nb, Y, Ga, LREE with low Mg#, Sr, CaO and HREE. ɛNd values are high with respect to surrounding exposed crust of the Musgrave Province and Gawler Craton, and range from +1.2 to +3.3 at 1.5 Ga. The tectonic environment into which the granite was emplaced is also unclear, however one possibility is emplacement within an extensional environment represented by interlayered basalts and arenaceous sediments of the Coompana Block. Regardless, the granitic gneiss intersected in Mallabie 1 represents magmatic activity during the “Australian magmatic gap” of ca. 1.52-1.35 Ga, and is a possible source for detrital ca. 1.50 zircons found within sedimentary rocks of Tasmania and Antarctica, and metasedimentary rocks of the eastern Musgrave Province.
http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1261003
Thesis(PhD)-- University of Adelaide, School of Earth and Environmental Sciences, 2006
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49

Hope, MW. "The geological evolution of the Norseman Area, Western Australia". Thesis, 2004. https://eprints.utas.edu.au/20567/1/whole_HopeMatthewWilliam2004_thesis.pdf.

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Norseman lies 200 km south of Kalgoorlie within the most southern part of the late Archaean Eastern Goldfields Province of Western Australia. This study resolves the stratigraphy and structure of the upper Norseman Terrane and proposes tectonic models to explain the formation of the terrane and differences with the adjacent Kalgoorlie Terrane. Problems with the current understanding of the lower stratigraphy of the Norseman Terrane were identified, but not fully resolved. Geological mapping at 1:2500-scale of the upper part of the Norseman Terrane at the Polar Bear Peninsula; revealed five Archaean facies associations: • Mafic volcanic rocks and dolerite intrusives; • Ultramafic rocks; • Mafic conglomerate and sandstone; • Fine-grained sedimentary units, dominantly pyritic black shales and thin-bedded, siltstone-shale turbidites; and • Rhyolite lavas and both in situ and resedimented breccias. The stratigraphy and geometry of the map patterns, when combined with age dating from the Eastern Goldfields, suggests that basalts overlying the Norseman komatiite are a thrust repetition of basalts from below the komatiite. This hypothesis is supported by trace element geochemistry that found all basalts above and below the komatiite have similar tholeiitic composition. They do not possess the distinctive siliceous high magnesium chemistry of the basalts that overlie the komatiite at Kambalda. Basalts from the lower Penneshaw Formation at the base of the Norseman stratigraphic succession also have a tholeiitic composition and are interpreted as another thrust repetition of the mafic greenstone package. The uppermost stratigraphy preserved within the Norseman Terrane is rhyolite at Polar Bear. Facies analysis of rhyolite and breccias indicates the rock units represent a submarine lava dome that was emplaced upon unconsolidated black shale, generating peperite breccias. At the margins of the dome, where it pinches out of the stratigraphy, the equivalent strata are rhyolite-sediment breccias and sandstone. These represent the lower sections of gravelly and sandy high-density turbidites resulting from gravitational collapse of sections of the dome. Underlying fine-grained sediments were incorporated as rip-up clasts. Two evolved felsic rock suites are distinguished within the Norseman Terrane. The first suite (Polar Bear rhyolite lava, intrusive Ajax rhyolite porphyry, Harlequin rhyolite porphyry dyke and the Dundas Granite) is interpreted to have been deiived from fusion of a siliceous crustal basement source. The second suite (intrusive Polar Bear quartz porphyry and Harlequin granodiorite) is interpreted to have originated as magma with a high-Al Trondhjemite-Tonalite-Dacite (TTD) chemistry. Low pressure feldspar fractionation was a key process in the subsequent development of the members in both suites. In the adjacent Coolgardie Domain of the Kalgoorlie Terrane, at an equivalent upper stratigraphic level, dacitic conglomerate, sandstone and siltstone of the Black Flag Beds (BFB) are present. These rocks represent erosional products of emergent volcanic centres, which were subsequently deposited as high density turbidites within the Kalgoorlie Basin, a depression that previous studies indicate is a rift basin developed under an extensional tectonic regime. These dacitic epiclastic rocks and other intrusive felsic porphyries have distinctive high-Al TTD suite chemistry, thought to form by melting of young, hot, subducted oceanic crust. There is no geochemical evidence within these dacites and other felsic intrusives, of low pressure feldspar fractionation. The stratigraphic and geochemical differences between the felsic rocks within the Kalgoorlie Terrane and the Norseman Terrane are interpreted to be the result of differing degrees of extension. The Kalgoorlie Terrane formed the central axis of an island arc. The arc rifted, forming the Kalgoorlie Basin, which was filled with BFB epiclastic volcanics and sediments. The extension assisted the ready passage to the surface, of magmas generated deep in the subduction zone. The Norseman area was marginal to the Kalgoorlie Basin rind did not undergo substantial extension. Efficient magma conduits were not developed sb that subduction zone magmas became trapped in crustal magma chambers and underwent feldspar fractionation. Intrusion and underplating of subduction zone magmas caused melting of felsic basement forming the rhyolites. Closure of the Kalgoorlie Basin occurred during N-S directed compression, suggested to have resulted from continental collision at the subduction zone. This compression caused large scale thrusts that throw the basaltic greenstories over the komatite in the Norseman Terrane. It also pushed the entire Norseman area in the north, developing it as an allochthonous fault-bounded terrane, which split the former Kalgoorlie basin and caused it to wrap around the Norseman Terrane to the east arid west.
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50

Shaw, R. D. "Basement uplift and basin subsidence in Central Australia". Phd thesis, 1987. http://hdl.handle.net/1885/140466.

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