Relevant bibliographies by topics / Central Gawler Craton

Academic literature on the topic 'Central Gawler Craton'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Central Gawler Craton"

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Hoatson, D. M., S. S. Sun, M. B. Duggan, M. B. Davies, S. J. Daly, and A. C. Purvis. "Late Archean Lake Harris Komatiite, Central Gawler Craton, South Australia:Geologic Setting and Geochemistry." Economic Geology 100, no. 2 (March 1, 2005): 349–74. http://dx.doi.org/10.2113/gsecongeo.100.2.349.

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Hoatson, D. M. "Late Archean Lake Harris Komatiite, Central Gawler Craton, South Australia: Geologic Setting and Geochemistry." Economic Geology 100, no. 2 (March 1, 2005): 349–74. http://dx.doi.org/10.2113/100.2.349.

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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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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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van der Hoek, B. G., S. M. Hill, and Robert C. Dart. "Calcrete and plant inter-relationships for the expression of concealed mineralization at the Tunkillia gold prospect, central Gawler Craton, Australia." Geochemistry: Exploration, Environment, Analysis 12, no. 4 (November 2012): 361–72. http://dx.doi.org/10.1144/geochem2011-115.

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Kelka, Ulrich, Cericia Martinez, Carmen Krapf, Stefan Westerlund, Ignacio Gonzalez-Alvarez, Mark Pawley, and Clive Foss. "Establishing an integrated workflow identifying and linking surface and subsurface lineaments for mineral exploration under cover: example from the Gawler Craton, South Australia." Solid Earth 13, no. 4 (April 29, 2022): 827–47. http://dx.doi.org/10.5194/se-13-827-2022.

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Abstract. Mineral exploration in areas comprising thick and complex cover represents an intrinsic challenge. Cost- and time-efficient methods that help to narrow down exploration areas are therefore of particular interest to the Australian mining industry and for mineral exploration worldwide. Based on a case study around the Tarcoola gold mine in the regolith-dominated South Australian central Gawler Craton, we suggest an exploration targeting workflow based on the joint analysis of surface and subsurface lineaments. The datasets utilised in this study are a digital elevation model and radiometric data that represent surface signals and total magnetic intensity and gravity attributed to subsurface signals. We compare automatically and manually mapped lineament sets derived from remotely sensed data. In order to establish an integrated concept for exploration through cover based on the best-suited lineament data, we will point out the most striking differences between the automatically and manually detected lineaments and compare the datasets that represent surficial in contrast to subsurface structures. We further show how lineaments derived from surface and subsurface datasets can be combined to obtain targeting maps that help to narrow down areas for mineral exploration. We propose that target areas are represented by high lineament densities which are adjacent to regions comprising high density of lineament intersections.
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Boone, S. C., C. Seiler, A. J. Reid, B. Kohn, and A. Gleadow. "An Upper Cretaceous paleo-aquifer system in the Eromanga Basin of the central Gawler Craton, South Australia: evidence from apatite fission track thermochronology." Australian Journal of Earth Sciences 63, no. 3 (April 2, 2016): 315–31. http://dx.doi.org/10.1080/08120099.2016.1199050.

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Courtney-Davies, Liam, Cristiana L. Ciobanu, Nigel J. Cook, Max R. Verdugo-Ihl, Ashley Slattery, Sarah E. Gilbert, and Kathy Ehrig. "Metallic-Pb nanospheres in zircon from the Challenger Au deposit, South Australia: probing metamorphic and ore formation histories." Mineralogical Magazine 85, no. 6 (November 2, 2021): 868–78. http://dx.doi.org/10.1180/mgm.2021.81.

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AbstractAncient metamorphic processes are recorded by the formation of metallic-Pb nanospheres in zircon, a product of internal Pb mobilisation and thermally driven concentration. Here, metallic-Pb nanospheres formed within an ore deposit are characterised for the first time using high-angle annular dark field scanning transmission electron microscopy and energy-dispersive X-ray spectroscopy element-distribution mapping. Exceptional examples from the migmatite-hosted Archean–Paleoproterozoic Challenger Au deposit (Central Gawler Craton, South Australia) support widespread metallic-Pb nanosphere formation in zircon from rocks experiencing granulite-facies metamorphism. We also report new trace-element associations found with metallic-Pb nanospheres and a new mode of occurrence, in which Sc ‘haloes’ form adjacent to metallic-Pb nanospheres within the crystalline zircon lattice. This differs to previously characterised examples of metallic-Pb nanospheres associated with amorphous Si-rich glasses and unidentified Al–Ti, or Fe-bearing phases. Multiple modes of metallic-Pb nanosphere occurrences and trace-element associations suggests multiple modes of formation, probably dependant on zircon composition and metamorphic conditions. Identification of metallic-Pb nanospheres in a growing range of geological settings further highlights the mobility of Pb in zircon and the importance of detailed, nanoscale mineral characterisation, in order to constrain accurate geochronological histories for rocks within high-temperature geological environments.
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Howard, K. E., M. Hand, K. M. Barovich, and E. Belousova. "Provenance of late Paleoproterozoic cover sequences in the central Gawler Craton: exploring stratigraphic correlations in eastern Proterozoic Australia using detrital zircon ages, Hf and Nd isotopic data." Australian Journal of Earth Sciences 58, no. 5 (July 2011): 475–500. http://dx.doi.org/10.1080/08120099.2011.577753.

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Dissertations / Theses on the topic "Central Gawler Craton"

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Swain, Greg Martin. "Provenance and tectonics of the late Archaean mulgathing complex, central Gawler Craton : geochronological, geochemical and isotopic evidence for plume-arc interaction /." Title page, table of contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09SB/09sbs9715.pdf.

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Thompson, C. "Thermal and exhumation history of the central Yorke Peninsula, southern Gawler Craton." Thesis, 2013. http://hdl.handle.net/2440/106460.

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The central Yorke Peninsula, South Australia, is a prospective area for iron-oxide-copper-gold mineralisation. However due to minimal exposure there is limited data on the metamorphic, deformation and cooling history on the Central Yorke Peninsula in southern Gawler Craton in southern Australia. Here we use metamorphic zircon and monazite grains from drill holes in the Equis and Ranald prospects to determine the thermal history of the area. U-Pb geochronology suggests that central Yorke Peninsula underwent metamorphism during ca 1540 – 1480 Ma. Pressure – temperature (P-T) modelling suggests that the metamorphic conditions for this thermal event were high temperature/low pressure, amphibolite-granulite facies associated with normal to elevated geothermal gradients. The tectonothermal driver for this event is not clear, it can be suggested that a combination of extension and magmatism may be have contributed to this thermal event. After the thermal event the central Yorke Peninsula underwent a period of extension and exhumation. Exhumation and extension was most likely accommodated by the Pine Point Fault during ca 1500 – 1450 Ma and was likely to be associated with reactivation of major structures, brittle faulting and regional folding in the Gawler Craton. Ca 1600 – 1570 Ma Hiltaba-age mineralisation has possibly been affected by the ca 1540 to 1480 thermal event in ways of remobilisation and concentration and following that was possibly redistributed along the Pine Point Fault during the ca 1500 – 1450 Ma extension and exhumation.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2013
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Budd, Anthony. "The Tarcoola Goldfield of the Central Gawler Gold Province, and the Hiltaba Association Granites, Gawler Craton, South Australia." Phd thesis, 2006. http://hdl.handle.net/1885/12890.

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The Tarcoola Goldfield, central South Australia, is one of a number within the Central Gawler Gold Province (CGGP) spatially related to Hiltaba Suite granites. This study investigates the origin of mineralisation at Tarcoola, and the petrogenesis of granites at and around Tarcoola. ‘Hiltaba Suite’ granites in the Tarcoola region are assigned to two supersuites, which is expanded to four once granites from the rest of the Gawler Craton are considered. The term Hiltaba Association Granites (HAG) is introduced as the parental unit of the Jenners, Malbooma, Venus and Roxby Supersuites. These criteria are applied to the felsic parts of the comagmatic Gawler Range Volcanics (GRV). The HAG and GRV are grouped as the bimodal Gawler Ranges–Hiltaba Volcano–Plutonic (GRHVP) Association. The felsic components generally have high K, HFSE, LIL, are fractionated and evolved, have moderate to high Fe/Mg, are slightly alkaline, metaluminous to slightly peraluminous, slightly oxidised and high-temperature. The supersuites of the Tarcoola region are the Malbooma Supersuite, which is more strongly evolved and fractionated than the Jenners Supersuite. Both Supersuites are I-type and evolved from a granodiorite composition by fractional crystallisation. The Pegler and Ambrosia Granites (Jenners Supersuite), and are dated at 1591.7 ± 5.8 and 1575.4 ± 7.8 Ma. The Big Tank, Kychering and Partridge Granites (Malbooma Supersuite), and are dated at 1589.9 ± 7.4, 1574.7 ± 4.3 and 1577 ± 8.5 Ma. The Roxby and Venus Supersuites are A-type granites and volcanics, with higher HFSE, F, and zircon saturation temperatures than the I-types. Nd-isotope data indicate that the felsic GRHVP formed by mixing between evolved mantle and crust. Narrow dykes of the high-K Lady Jane Diorite intrude the Tarcoola Goldfield. This unit, and other basalts of the GRHVP, are interpreted to represent mixing between evolved lithospheric and primitive asthenospheric mantle melts. The Paxton Granite at the Tarcoola Goldfield was dated as older than the HAG at ~1720 Ma. The Tarcoola Formation was deposited in an ensialic basin directly onto the Paxton, with the basal Peela Conglomerate Member contains zircons of 1732.8 ± 5.1 Ma and 1714.6 ± 7.9 Ma, and the middle parts of the Tarcoola Formation being deposited at 1656 ± 7 Ma. Mineralisation at the Tarcoola Goldfield is quartz-vein hosted within the Tarcoola Formation, and comprises Au±Pb-Zn. The veins are structurally-controlled. 40Ar/39Ar geochronology and field relationships show that brittle veining, mineralisation, alteration and intrusion of the Lady Jane Diorite, occurred synchronously at ~1580 Ma. A Pb-Pb isotope study at the Tarcoola Goldfield is consistent with sourcing of Pb from the Paxton Granite, but does not exclude a mixed source. A shift in Nd during alteration may show an input from the relatively primitive Lady Jane Diorite. An atlas shows correlations between the four supersuites and the two defined mineral provinces of the Gawler Craton. Notably the Roxby Supersuite is associated nearly exclusive with iron-oxide copper-gold mineralisation in the Olympic Cu-Au Province in the eastern part of the Craton. The I-type Jenners and Malbooma Supersuites are mostly restricted to the CGGP. A position inboard of a subduction zone (hot continental back-arc) rather than anorogenic setting is proposed.
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Klingberg, L. L. "Regolith-landforms and regolith geochemistry of the ‘Tomahawk’ Au-in-calcrete anomaly: Tunkillia, Gawler Craton, South Australia." Thesis, 2009. http://hdl.handle.net/2440/129278.

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The ‘Tomahawk’ Au-in-calcrete anomaly is a zone of peak Au-in-calcrete content within the Tunkillia prospect of the central Gawler Craton, South Australia. Exploration drilling of this area has failed to intersect significant underlying mineralisation, making this an important setting to investigate controls on linkages between Au-in-calcrete expression and possible mineralisation sources. This study is the first to consider the multi-element geochemical characteristics of calcretes at ‘Tomahawk’ rather than using the Au-only approach of previous geochemical exploration. This investigation also considers the potential for laterally dispersed geochemical signatures across the landscape recorded at the surface of Au and associated elements, and suggests that Au was, and may still be physically mobilised along old and contemporary alluvial drainage depressions. There is a low relief, but locally significant drainage divide to the south of ‘Tomahawk’, so the anomaly area is associated with a point of low, broad confluence of several north flowing palaeodrainage depressions. The interpretation of these palaeolandscape controls further builds on palaeodrainage channel identification from previous studies and supports hypotheses that ‘Tomahawk’ is in an upper catchment setting, relative to the ‘Area 191’ Au-in-calcrete anomaly. Primary Au mineralisation at Tunkillia is associated with pyrite, minor galena and sphalerite within quartz-sulphide veins, and has a geochemical association with Au, Ag, Pb and Zn. Supergene Au enrichment has been recognised within ferruginised saprock overlying mineralised bedrock, and this is largely considered Au-only mineralisation. The calcrete geochemistry here shows some distinction between possible primary and secondary Au occurrences based in the trace element characteristics. The Au-in-calcrete concentrations obtained in this study are up to 194 ppb within CHep and ISps2 regolith-landforms in the north of the study area, corresponding to the lower margins of topography and areas interpreted to be within palaeodrainage systems. Silver concentrations above detection were found in association with many of the elevated Au results, therefore identifying areas of interest and possible alteration halos surrounding primary Au mineralisation. Furthermore, small exposures of weathered in situ quartz veins support a possible source for the ‘Tomahawk’ Au-in-calcrete anomaly to the south, which is immediately upslope of the palaeodrainage system.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2009
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