Relevant bibliographies by topics / Isotope geology South Australia Gawler Craton

Academic literature on the topic 'Isotope geology South Australia Gawler Craton'

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Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Isotope geology South Australia Gawler Craton"

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Reid, Anthony, Richard Flint, Roland Maas, Katherine Howard, and Elena Belousova. "Geochronological and isotopic constraints on Palaeoproterozoic skarn base metal mineralisation in the central Gawler Craton, South Australia." Ore Geology Reviews 36, no. 4 (December 2009): 350–62. http://dx.doi.org/10.1016/j.oregeorev.2009.09.001.

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Tiddy, Caroline, Diana Zivak, June Hill, David Giles, Jim Hodgkison, Mitchell Neumann, and Adrienne Brotodewo. "Monazite as an Exploration Tool for Iron Oxide-Copper-Gold Mineralisation in the Gawler Craton, South Australia." Minerals 11, no. 8 (July 26, 2021): 809. http://dx.doi.org/10.3390/min11080809.

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The chemistry of hydrothermal monazite from the Carrapateena and Prominent Hill iron oxide-copper-gold (IOCG) deposits in the IOCG-rich Gawler Craton, South Australia, is used here to define geochemical criteria for IOCG exploration in the Gawler Craton as follows: Monazite associated with IOCG mineralisation: La + Ce > 63 wt% (where La > 22.5 wt% and Ce > 37 wt%), Y and/or Th < 1 wt% and Nd < 12.5 wt%; Intermediate composition monazite (between background and ore-related compositions): 45 wt% < La + Ce < 63 wt%, Y and/or Th < 1 wt%. Intermediate monazite compositions preserving Nd > 12.5 wt% are considered indicative of Carrapateena-style mineralisation; Background compositions: La + Ce < 45 wt% or Y or Th > 1 wt%. Mineralisation-related monazite compositions are recognised within monazite hosted within cover sequence materials that directly overly IOCG mineralisation at Carrapateena. Similar observations have been made at Prominent Hill. Recognition of these signatures within cover sequence materials demonstrates that the geochemical signatures can survive processes of weathering, erosion, transport and redeposition into younger cover sequence materials that overlie older, mineralised basement rocks. The monazite geochemical signatures therefore have the potential to be dispersed within the cover sequence, effectively increasing the geochemical footprint of mineralisation.
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Fraser, G. L., R. G. Skirrow, A. Schmidt-Mumm, and O. Holm. "Mesoproterozoic Gold in the Central Gawler Craton, South Australia: Geology, Alteration, Fluids, and Timing." Economic Geology 102, no. 8 (December 1, 2007): 1511–39. http://dx.doi.org/10.2113/gsecongeo.102.8.1511.

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Curtis, Stacey, and Stephan Thiel. "Identifying lithospheric boundaries using magnetotellurics and Nd isotope geochemistry: An example from the Gawler Craton, Australia." Precambrian Research 320 (January 2019): 403–23. http://dx.doi.org/10.1016/j.precamres.2018.11.013.

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Schmidt Mumm, Andreas, and Frank Reith. "Biomediation of calcrete at the gold anomaly of the Barns prospect, Gawler Craton, South Australia." Journal of Geochemical Exploration 92, no. 1 (January 2007): 13–33. http://dx.doi.org/10.1016/j.gexplo.2006.06.003.

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Brotodewo, Adrienne, Caroline Tiddy, Diana Zivak, Adrian Fabris, David Giles, Shaun Light, and Ben Forster. "Recognising Mineral Deposits from Cover; A Case Study Using Zircon Chemistry in the Gawler Craton, South Australia." Minerals 11, no. 9 (August 25, 2021): 916. http://dx.doi.org/10.3390/min11090916.

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Detrital zircon grains preserved within clasts and the matrix of a basal diamictite sequence directly overlying the Carrapateena IOCG deposit in the Gawler Craton, South Australia are shown here to preserve U–Pb ages and geochemical signatures that can be related to underlying mineralisation. The zircon geochemical signature is characterised by elevated heavy rare-earth element fractionation values (GdN/YbN ≥ 0.15) and high Eu ratios (Eu/Eu* ≥ 0.6). This geochemical signature has previously been recognised within zircon derived from within the Carrapateena orebody and can be used to distinguish zircon associated with IOCG mineralisation from background zircon preserved within stratigraphically equivalent regionally unaltered and altered samples. The results demonstrate that zircon chemistry is preserved through processes of weathering, erosion, transport, and incorporation into cover sequence materials and, therefore, may be dispersed within the cover sequence, effectively increasing the geochemical footprint of the IOCG mineralisation. The zircon geochemical criteria have potential to be applied to whole-rock geochemical data for the cover sequence diamictite in the Carrapateena area; however, this requires understanding of the presence of minerals that may influence the HREE fractionation (GdN/YbN) and/or Eu/Eu* results (e.g., xenotime, feldspar).
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Lintern, M. J., M. J. Sheard, and A. R. Chivas. "The source of pedogenic carbonate associated with gold-calcrete anomalies in the western Gawler Craton, South Australia." Chemical Geology 235, no. 3-4 (December 2006): 299–324. http://dx.doi.org/10.1016/j.chemgeo.2006.08.001.

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Ferguson, Matthew R. M., Kathy Ehrig, and Sebastien Meffre. "Insights into magma histories through silicate-oxide crystal clusters: Linking the Hiltaba Suite intrusive rocks to the Gawler Range Volcanics, Gawler Craton, South Australia." Precambrian Research 321 (February 2019): 103–22. http://dx.doi.org/10.1016/j.precamres.2018.11.015.

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Petersson, Andreas, Anthony I. S. Kemp, and Martin J. Whitehouse. "A Yilgarn seed to the Pilbara Craton (Australia)? Evidence from inherited zircons." Geology 47, no. 11 (September 25, 2019): 1098–102. http://dx.doi.org/10.1130/g46696.1.

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Abstract Knowledge of the age and compositional architecture of Archean cratonic lithosphere is critical for models of geodynamics and continental growth on early Earth, but can be difficult to unravel from the exposed geology. We report the occurrence of numerous >3.7 Ga zircon crystals in 3.45 Ga rhyolites of the eastern Pilbara Craton (Western Australia), which preserve evidence for an Eoarchean meta-igneous component in the deep Pilbara crust. This inherited zircon population shares similar and distinctive age and Hf-O isotope characteristics with the oldest gneissic components of the Yilgarn Craton ∼500 km farther south, suggesting a common ca. 3.75 Ga felsic crustal nucleus to these two Archean granite-greenstone terranes. We infer a pivotal role for such ‘seeds’ in facilitating the growth and persistence of Archean continental lithosphere.
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Gloyn-Jones, Jonathan Nicholas, Ian James Basson, Ben Stoch, Corné Koegelenberg, and Michael-John McCall. "Integration of Stress–Strain Maps in Mineral Systems Targeting for IOCG Mineralisation within the Mt. Woods Inlier, Gawler Craton, South Australia." Minerals 12, no. 6 (May 31, 2022): 699. http://dx.doi.org/10.3390/min12060699.

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The application of finite element analysis is used to simulate the relative distribution and magnitude of stress–strain conditions during a geologically brief, NNW-SSE-oriented, extensional event (1595 Ma to 1590 Ma), co-incident with IOCG-hydrothermal fluid flow and mineralisation across the Mt Woods Inlier, Gawler Craton, South Australia. Differential stress and shear strain maps across the modelled terrane highlight regions that were predisposed to strain localization, extensional failure and fluid throughput during the simulated mineralisation event. These maps are integrated with other datasets and interpretation layers, one of which is a proposed structural–geometrical relationship apparent in many world-class IOCG deposits, including Prominent Hill, Olympic Dam, Sossego, Salobo, Cristalino and Candelaria. These deposits occur at steeply plunging, pipe-like intersections of conjugate extensional systems of faults, shears and/or contacts, wherein the obtuse angle may have been bisected by the maximum principal extensional axis (viz., σ3) during mineralisation. Several other layers are also used for the generation of targets, such as distance from major shear zones, favourable host lithologies, and proximity to tectonostratigraphic contacts of markedly contrasting competency. The result is an integrated target index or heat map for IOCG prospectively across the Mt. Woods Inlier.
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Dissertations / Theses on the topic "Isotope geology South Australia Gawler Craton"

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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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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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Iwaniw, Andrew Mark. "Evidence of recycling of Archaean continental crust : a geochemical and Nd-Sr isotope study of Gawler Craton Granitoids, South Australia /." Title page, contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09SB/09sbi9663.pdf.

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Duclaux, Guillaume. "Comportement mécanique des lithosphères continentales chaudes Evolution des cratons Néoarchéens et Paléoprotérozoïques de Terre Adélie (Antarctique Est) et du Gawler (South Australia)." Phd thesis, Université Jean Monnet - Saint-Etienne, 2007. http://tel.archives-ouvertes.fr/tel-00206311.

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Le bouclier Est Antarctique est constitué de nombreux domaines géologiques accrétés autour de 530 Ma. Tous ces domaines enregistrent la trace des événements Grenvillien et Pan-Africain à l'exception d'un seul : le Craton de Terre Adélie.
Le Craton de Terre Adélie et son prolongement septentrional, le Craton du Gawler (en South Australia), font partie d'un même bloc : le Mawson Continent. Ils présentent donc une histoire géologique commune avant l'ouverture du domaine océanique Austral il y a environ 90 Ma. Ces cratons sont constitués d'un socle métamorphique polyphasé formé et structuré lors de deux événements géologiques majeurs datés au Néoarchéen (∼ 2.5 Ga) et au Paléoprotérozoïque (∼ 1.7 Ga).
Cette étude présente les mécanismes tectoniques à l'origine de la structuration de ce paléo-continent. Les campagnes de terrain et les travaux en laboratoire (pétrologie, géochronologie Ar–Ar et U–Th–Pb) réalisés sur des roches provenant des deux cratons ont permis (1) de préciser l'âge et l'origine de la déformation néoarchéenne ainsi que le comportement de la lithosphère continentale à cette époque et (2) de quantifier l'importance de la déformation paléoprotérozoïque au sein du noyau archéen et dans les domaines paléoprotérozoïques adjacents.
Ces travaux apportent de nouvelles contraintes sur la tectonique précambrienne.
Nos travaux ont permis de mettre en évidence et de modéliser numériquement en 3D l'évolution à l'échelle lithosphérique de la déformation lors de l'affaiblissement des contraintes tectoniques convergentes appliquées à une lithosphère archéenne chaude. Sous l'influence de la gravité, la lithosphère chaude va fluer dans une direction perpendiculaire à celle de convergence, principalement par des mécanismes de constriction horizontale. De plus, nous mettons en évidence une dualité rhéologique entre un noyau cratonique stable et sa couverture autochtone lors de processus tardifs de réactivation tectonique.
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Simpson, C. A. "Constraints on Proterozoic crustal evolution from an isotopic and geochemical study of clastic sediments of the Gawler Craton, South Australia." Thesis, 1994. http://hdl.handle.net/2440/88297.

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The Gawler Craton comprises tocks varying in age from Archaean to more recent Phanerozoic sediments. The rocks of greatest interest in defining processes of early crustal formation and evolution in the Australian continent, are the basement material older than approximately 1400 Ma (pre-cratonisation), comprising deformed and metamorphosed rocks suites of Archaean and Proterozoic metasediments and gneisses. These suites span an immense period of intense geological history, and as such are a topic of much past and present study. Detailed mapping in the Tumby Bay region of eastern Eyre Peninsula outlines stratigraphic and structural evolution of a sequence of Proterozoic rock suites, these are proposed to be related to other recognised deformation episodes elsewhere within the Gawler Craton, thus regional correlation is inferred. A new theory for development of two lineations within the map region is postulated by two movement directions along the Kalinjala Mylonite Zone. Geochemically the Proterozoic sediments of the Gawler Craton are similar to upper crustal average values of Taylor & McClennan (1985). However, characteristic depletions in Nb and Sr are recognised. Consistency in trace element compositions for Archaean and Proterozoic samples would suggest recycling of older Archaean crust into Proterozoic sediments and granitoids. Analysis of representative trace element ratios and indices of alteration and weathering suggest some change in geochemistry throughout the Proterozoic period. Selected Proterozoic elastic sedimentary suites were geochemicaly and isotopically (Sm-Nd) analysed, with the data being presented within this thesis. The most interesting of these being the Pandurra Formation, red-bed sediments deposited within the north-eastern Stuart Shelf region of the Gawler Craton. These sediments exhibit a change in measured isotopic values, with younger epsilon neodymium (ENd), and higher Sm/Nd ratios observed (ENd(O) = -14.67, Sm/Nd = 0.2441), than typical older Gawler Craton rocks (average Proterozoic sediments ENd(O) = -21.85, Sm/Nd = 0.1847). This isotopic shift is also recognised within the Adelaide Fold Belt to the east of the Gawler Craton (average shales ENd(O) = -16.20, Sm/Nd = 0.1942). A source for these younger signatures is not recognised within the Gawler Craton, and therefore more distal province sources, OR isotopic alteration in the originally considered 'robust' Sm-Nd isotopic system, are proposed.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 1994
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Neumann, Narelle L. (Narelle Louise). "Geochemical and isotopic characteristics of South Australian Proterozoic granites : implications for the origin and evolution of high heat-producing terrains / Narelle Neumann." 2001. http://hdl.handle.net/2440/19892.

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Includes copies of articles co-authored by the author during the preparation of this thesis.
Addendum attached to back cover.
Bibliography: leaves 125-135.
x, 135 leaves [98] : 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 use of geophysical, geochemical and isotopic data in order to identify the timing and processes of crustal heat-producing element enrichment within South Australia.
Thesis (Ph.D.)--Adelaide University, Dept. of Geology and Geophysics, 2001
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Neumann, Narelle L. (Narelle Louise). "Geochemical and isotopic characteristics of South Australian Proterozoic granites : implications for the origin and evolution of high heat-producing terrains / Narelle Neumann." Thesis, 2001. http://hdl.handle.net/2440/19892.

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Includes copies of articles co-authored by the author during the preparation of this thesis.
Addendum attached to back cover.
Bibliography: leaves 125-135.
x, 135 leaves [98] : ill. (some col.), maps ; 30 cm.
Focuses on the use of geophysical, geochemical and isotopic data in order to identify the timing and processes of crustal heat-producing element enrichment within South Australia.
Thesis (Ph.D.)--Adelaide University, Dept. of Geology and Geophysics, 2001
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Teasdale, Jonathan 1971. "Methods for understanding poorly exposed terranes : the interpretive geology and tectonothermal evolution of the western Gawler Craton / Jonathan Teasdale." 1997. http://hdl.handle.net/2440/19235.

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Two folded coloured maps and 2 coloured overlays in back cover pocket.
Bibliography: p. 183-142.
x, 182 p. : ill. (some col.), maps (some col.) ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Thesis (Ph.D.)--University of Adelaide, Dept. of Geology, 1998?
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Teasdale, Jonathan 1971. "Methods for understanding poorly exposed terranes : the interpretive geology and tectonothermal evolution of the western Gawler Craton / Jonathan Teasdale." Thesis, 1997. http://hdl.handle.net/2440/19235.

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Two folded coloured maps and 2 coloured overlays in back cover pocket.
Bibliography: p. 183-142.
x, 182 p. : ill. (some col.), maps (some col.) ; 30 cm.
Thesis (Ph.D.)--University of Adelaide, Dept. of Geology, 1998.
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9

Reddy, M. C. "Low-temperature thermochronologic insight into the exhumation of the Northern Gawler craton (South Australia)." Thesis, 2014. http://hdl.handle.net/2440/110559.

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The Gawler Craton (South Australia) records a complex thermal history during the Phanerozoic. Previous work has indicated that the central Gawler Craton was largely exhumed during the Carboniferous as a far-field effect of the Alice Springs Orogeny. Besides this widespread exhumation event, localised Mesozoic and Tertiary thermal events have been documented for the central Gawler Craton as well. The extent of these events into the northern Gawler Craton is not well understood as low-temperature thermochronological data is lacking for this region. For this study, granitoid samples along a roughly north-south transect through the northern and central Gawler Craton were analysed using the apatite fission track (AFT) and apatite (AHe) and zircon (ZHe) U-Th-Sm/He methods. Results from these low-temperature methods yield Neoproterozoic through to Cretaceous AFT, AHe and ZHe ages. Cumulative AFT age plots reveal a multi-phase Phanerozoic cooling history for the central and northern Gawler Craton. Significant AFT age peaks were found at ~480-450 Ma and ~350-300 Ma. The Ordovician age peak is thought to be related with the final stages of the Delamerian Orogeny, while the Carboniferous age peak is interpreted as being a far field response to the Alice Springs Orogeny. This is consistent with previous interpretations throughout South Australia. Additionally, localised Jurassic and Cretaceous AFT and ZHe ages were obtained which are thought to be related with rifting at the southern Australian margin and river incision respectively.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2014
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Tomkins, Andrew George. "Evolution of the granulite-hosted Challenger gold deposit, South Australia : implications for ore genesis." Phd thesis, 2002. http://hdl.handle.net/1885/146024.

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