How to resolve the controls on mesothermal vein systems in a goldfield characterized by sparse kinematic information and fault reactivation-a structural and graphical approach
Kreuzer, Oliver P. (2004) How to resolve the controls on mesothermal vein systems in a goldfield characterized by sparse kinematic information and fault reactivation-a structural and graphical approach. Journal of Structural Geology, 26 (6-7). pp. 1043-1065.
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Current mine exposures of auriferous veins in the Charters Towers Goldfield (CTGF) are characterized by a scarcity of kinematic indicators. Furthermore, the dip direction of exposed and historically mined orebodies largely coincides with the orientation of pre-existing discontinuities. Consequently, the reactivation of earlier structures during gold deposition is strongly indicated. Both factors complicate the structural analysis of the auriferous vein systems, as slip on earlier faults likely occurred before new rock failure and evolution of fault networks reflecting the stress field present at the time of gold deposition. Despite access to drillcore, open pits and underground workings, extracted data were limited to ten occurrences of wear groove striations and three reverse separations of dykes and a pegmatite cut by sulphide-bearing quartz veins. Because of the scarcity of kinematic information, the structural analysis focused on the geometry of veins and ore-shoots, also applying basic graphical and kinematic methods.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||mesothermal gold deposits; reactivation; structural and graphical analysis|
|FoR Codes:||04 EARTH SCIENCES > 0403 Geology > 040312 Structural Geology @ 100%|
|SEO Codes:||84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840105 Precious (Noble) Metal Ore Exploration @ 100%|
|Deposited On:||17 Dec 2010 11:45|
|Last Modified:||18 Oct 2013 01:07|
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