Relevant bibliographies by topics / Paleoproterozoic Gawler Craton

Academic literature on the topic 'Paleoproterozoic Gawler Craton'

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

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Journal articles on the topic "Paleoproterozoic Gawler Craton"

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Reid, A., M. Hand, E. Jagodzinski, D. Kelsey, and N. Pearson. "Paleoproterozoic orogenesis in the southeastern Gawler Craton, South Australia∗." Australian Journal of Earth Sciences 55, no. 4 (June 2008): 449–71. http://dx.doi.org/10.1080/08120090801888594.

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Creaser, Robert A. "Neodymium isotopic constraints for the origin of Mesoproterozoic felsic magmatism, Gawler Craton, South Australia." Canadian Journal of Earth Sciences 32, no. 4 (April 1, 1995): 460–71. http://dx.doi.org/10.1139/e95-039.

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Mesoproterozoic felsic magmatism of the Gawler Range Volcanics and Hiltaba Suite granites occurred at 1585–1595 Ma across much of the Gawler Craton, South Australia. Nd isotopic analysis of this felsic magmatism, combined with petrological and geochemical arguments, suggest derivation by partial melting of both Paleoproterozoic and Archean crust. The majority of samples analyzed have Nd isotopic and geochemical characteristics compatible with the involvement of Paleoproterozoic crust stabilized during the 1.85–1.71 Ga Kimban orogeny as sources for the Mesoproterozoic magmatism; others require derivation from sources dominated by Archean rocks. This cycle of Paleoproterozoic crustal stabilization followed by involvement of this crust Mesoproterozoic felsic magmatism is one previously documented from many parts of Mesoproterozoic Laurentia. On the basis of models proposing East Australia–Antarctica to be the conjugate landmass at the rifted margin of western North America, it appears that the voluminous magmatism of South Australia is another example of a typically Mesoproterozoic style of magmatism linked to Laurentia. This Mesoproterozoic magmatism appears temporally linked to regional high-temperature, low-pressure metamorphism of the region, and together with the presence of mantle-derived magmas, implicates the operation of large-scale tectono-thermal processes in the origin of felsic magmatism at 1590 Ma.
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Dutch, R., M. Hand, and P. D. Kinny. "High-grade Paleoproterozoic reworking in the southeastern Gawler Craton, South Australia ∗." Australian Journal of Earth Sciences 55, no. 8 (December 2008): 1063–81. http://dx.doi.org/10.1080/08120090802266550.

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Baines, G., D. Giles, P. Betts, and G. Backe. "Geophysically imaging Paleoproterozoic terrane boundaries in the unexposed northern Gawler Craton, Marla region." ASEG Extended Abstracts 2009, no. 1 (2009): 1. http://dx.doi.org/10.1071/aseg2009ab097.

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Reid, Anthony J., Elizabeth A. Jagodzinski, Robin J. Armit, Rian A. Dutch, Christopher L. Kirkland, Peter G. Betts, and Bruce F. Schaefer. "U-Pb and Hf isotopic evidence for Neoarchean and Paleoproterozoic basement in the buried northern Gawler Craton, South Australia." Precambrian Research 250 (September 2014): 127–42. http://dx.doi.org/10.1016/j.precamres.2014.05.019.

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Halpin, Jacqueline A., and Anthony J. Reid. "Earliest Paleoproterozoic high-grade metamorphism and orogenesis in the Gawler Craton, South Australia: The southern cousin in the Rae family?" Precambrian Research 276 (May 2016): 123–44. http://dx.doi.org/10.1016/j.precamres.2016.02.001.

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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, J. L. Payne, K. A. Cutts, and E. A. Belousova. "U–Pb zircon, zircon Hf and whole-rock Sm–Nd isotopic constraints on the evolution of Paleoproterozoic rocks in the northern Gawler Craton." Australian Journal of Earth Sciences 58, no. 6 (August 2011): 615–38. http://dx.doi.org/10.1080/08120099.2011.594905.

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Reid, Anthony J., Elizabeth A. Jagodzinski, Geoffrey L. Fraser, and Mark J. Pawley. "SHRIMP U–Pb zircon age constraints on the tectonics of the Neoarchean to early Paleoproterozoic transition within the Mulgathing Complex, Gawler Craton, South Australia." Precambrian Research 250 (September 2014): 27–49. http://dx.doi.org/10.1016/j.precamres.2014.05.013.

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10

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 "Paleoproterozoic Gawler Craton"

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Rowett, C. E. "Nature and timing of brittle structures at the Challenger Gold Mine." Thesis, 2010. http://hdl.handle.net/2440/106234.

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This item is only available electronically.
The Challenger Gold Mine in the western Gawler Craton exhibits brittle deformation features that post-date mineralisation. This study has looked at the geometric relationships of the observed joint sets and has identified a dominant shallowly north-east dipping thrust fault package with a crosscutting vertical joint set. In the 880rL, a lamprophyric sill is emplaced within the shallowly north-east dipping fault.  Structural observations were made over 40 vertical metres in three of the underground mining levels the 920rL, the 900rL and the 880rL. Observations of these structural features culminated in the production of an interpreted 3D model using goCad® showing the connection of the fault package between the mapped levels. These observations in conjunction with alteration information and structural data showed that the fault network had a consistent dip across the package despite the undulations in the fault plane and that the series of splays observed linked the package together. The displacement and structural data both concluded that the shallowly north-east dipping fault network is a brittle deformation thrust system.  Three biotite samples from the lamprophyre were analysed using 39Argon/40Argon Thermochronology. Challenger-880-8 shows a plateau with 90% of cumulative 39Argon released between 1750 Ma and 1900 Ma. Challenger-880-9a produced a plateau using 55% cumulative 39Argon realised between 1800 Ma and 2100 Ma. Challenger-880-9b produces a plateau at 1860 Ma using five continuous steps where 45% of Cumulative 39Argon is released. Sample Challenger-880-9a provided an approximate crystallisation age of 1950 Ma. This is a coarser grained sample from close to the lamprophyre centre and produced a poorly defined plateau and consequently is thought to represent the minimum age of crystallisation. Challenger-880-9b and Challenger-880-8 both are fine grained samples from the chill margin of the lamprophyre and present ages of approximately 1860 Ma. This is interpreted as an age of structural significance associated with the Cornian Orogeny, illustrating reactivation along the fault package during the Paleoproterozic which had not been previously recognised in the western Gawler Craton.  The lamprophyre intruded into a pre-existing fault indicating that the shallowly north-east dipping fault package is older than 1950 Ma (the age of crystallisation). This provides information regarding the early-mid Paleoproterozoic in the western Gawler Craton.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2010
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