Dissertation/ Thesis
The early Mesoproterozoic tectonic and thermal evolution of the eastern Gawler Craton: implications for mineral systems in eastern Proterozoic Australia
| العنوان: | The early Mesoproterozoic tectonic and thermal evolution of the eastern Gawler Craton: implications for mineral systems in eastern Proterozoic Australia |
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| المؤلفون: | Bockmann, Mitchell Jae |
| المساهمون: | Hand, Martin, Payne, Justin, Morrissey, Laura, School of Physics, Chemistry and Earth Sciences |
| سنة النشر: | 2023 |
| المجموعة: | The University of Adelaide: Digital Library |
| مصطلحات موضوعية: | Gawler Craton, IOCG, Peake and Denison, Yorke Peninsula, geochronology, heat production |
| الوصف: | Eastern Proterozoic Australia contains many large iron oxide-copper-gold (IOCG) deposits formed during the early Mesoproterozoic within the Gawler Craton, Mount Isa and Curnamona provinces. These mineral systems are generally considered independent of one another due to their present-day geographic separation and the variations in the timing and style of mineralisation. However, tectonic reconstructions of Proterozoic Australia suggest these provinces were contiguous during the early Mesoproterozoic when mineralisation occurred. Despite the economic significance of eastern Proterozoic Australia for copper, the relationships between these well-endowed geologic provinces and the processes involved in mineralisation are still not well resolved. Tectonic reconstructions of Proterozoic Australia commonly place the Peake and Denison Domain in the northeastern Gawler Craton between the Mount Isa Province and the eastern Gawler Craton during the early Mesoproterozoic. But despite its ideal location between two regions containing world class copper deposits, the age of hydrothermal alteration systems in the Peake and Denison Domain has not been investigated. U–Pb data from the Peake and Denison Domain indicates a complex history during the early Mesoproterozoic, with multiple hydrothermal alteration events between 1560–1460 Ma, deformation at c. 1500 Ma and magmatism at c. 1470 Ma. These ages present a number of correlations with the Mount Isa Province, supporting tectonic reconstructions indicating these regions were connected during the early Mesoproterozoic, including during the period of extensive copper mineralisation in the Mount Isa Province. These correlations greatly enhance the prospectivity of the Peake and Denison region in the northeastern Gawler Craton for IOCG mineralisation. The eastern Gawler Craton, like much of eastern Proterozoic Australia, has highly anomalous crustal heat flow derived from significant enrichment of heat producing elements in the crust. Numerous studies have investigated the effects ... |
| نوع الوثيقة: | thesis |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://hdl.handle.net/2440/138379 |
| الاتاحة: | https://hdl.handle.net/2440/138379 |
| رقم الانضمام: | edsbas.DB86D465 |
| قاعدة البيانات: | BASE |
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