Paleogeographic setting and magmatic evolution of the Macquarie Arc provided perfect conditions for mainly porphyry-related, rich Au-Cu deposits, in the Ordovician, and especially in the Early Silurian after amalgamation of the arc with its flanking terranes.
ARC Centre of Excellence in Ore Deposits, June 2011 Kitto. J., 2016. Miscellaneous internal reporting of exploration targeting at Temora. Mowat. B., Smith S, 2012. Characteristics of Porphyry Cu-Au Systems in the Ordovician Macquarie Arc of NSW. Australian electronic gold prospecting forum.com.
Comparing prospectivity modelling results and past exploration data: A case study of porphyry Cu-Au mineral systems in the Macquarie Arc, Lachlan Fold Belt, New South Wales
Oct 10, 2017· The Macquarie Arc is an ancient volcanic island arc that formed in the southern Pacific Ocean 450 million years ago. ... are now part of the eastern Australia mainland - and are rich in porphyry ...
Copper Opportunities in New South Wales, Australia ... PORT MACQUARIE COFFS HARBOUR Kempsey Taree Muswellbrook Bourke TAMWORTH Armidale SYDNEY CANBERRA ... focussed on the large to very large porphyry Cu–Au systems associated with the Macquarie Arc …
• Reconstruction of arc elements and arc history • Known association between island arc volcanoes and porphyry Cu-Au and epithermal Au deposits • Larger Cu-Au deposits in the Macquarie Arc occur in sequences dominated by proximal volcanic facies
Lead isotope systematics of ore systems of the Macquarie Arc — Implications for arc substrate. ... Mowat B., Smith S.Characteristics of porphyry Au–Cu systems in the Ordovician Macquarie Arc of New South Wales. Lewis P.C. (Ed.), Mineral Exploration Geoscience in New South Wales, ...
The Porphyry Au-Cu Deposits and Related Shoshonitic Magmatism of the Palaeozoic Macquarie Volcanic Arc, Eastern Lachlan Orogen in New South Wales, Australia ... (Ed), 2005 - Super Porphyry Copper & Gold Deposits - A Global Perspective; PGC Publishing, Adelaide, v. 2, …
HYPERSPECTRAL CORE LOGGING MINERAL CHARACTERISATION - NORTHPARKES E48 PORPHYRY Cu-Au DEPOSIT, NSW ... Volcanic Belt of the Ordovician Macquarie Arc, in central New South Wales. Distal to proximal ... The Endeavour deposits are variants of silica saturated, alkalic, porphyry Cu-Au systems, with ...
Macquarie Arc porphyry Cu–Au deposits3.1. Alkalic porphyry Cu–Au deposits. The discovery of Cu and Au in the Macquarie Arc dates back to 1851. However, alkalic porphyry Cu–Au systems were only recognised in the Macquarie Arc in 1976 when wide-spaced drilling by Geopeko Limited intersected the Endeavour 22 deposit (Lye et al., 2006).
Characteristics of Porphyry Cu-Au Systems in the Ordovician Macquarie Arc of NSW. Bruce Mowat & Stuart Smith. Outline. Introduction History of exploration and research Distribution of systems Review key geological aspects of the major deposits Characteristics of the Temora porphyry systems
The porphyry Au–Cu deposits and related shoshonitic magmatism of the Palaeozoic Macquarie Arc, eastern Lachlan Orogen, New South Wales, Australia, a review Porter, T.M.; Glen, R.A. Postsubduction porphyry Cu–Au and epithermal Au deposits: products of remelting of subduction-modified lithosphere
The Macquarie Arc, Lachlan Orogen, New South Wales: its evolution, tectonic setting and mineral ... porphyry-related, rich Au-Cu deposits, in the Ordovician, ... subduction zone system, the Macquarie Arc, key elements of which are now discussed. This summary
The main porphyry-epithermal province in Australia is the Siluro-Ordovician Macquarie Arc in New South Wales, which contains major porphyry Cu-Au deposits at Cadia (global resource of 1.31 Gt at 0.31% Cu and 0.74 g/t Au: Cooke et al., 2007) and Northparkes (global resource of 153 Mt at 1.03% Cu and 0.46 g/t Au: Cooke et al., 2007).
Anatomy of porphyry-related Au-Cu-Ag-Mo mineralised systems: Some exploration implications Greg Corbett Corbett Geological Services, PO Box 282, Willoughby, NSW 2068 Summary Analyses of exploration and mining case studies as well as magmatic arc geothermal systems
Copper Opportunities in New South Wales, Australia To A d e l a i d A.C.T. QUEENSLAND VICTORIA A New England Orogen Lachlan Orogen ... focussed on the large to very large porphyry Cu–Au systems ... the Lachlan Orogen contains many small to large copper-rich deposits associated with Ordovician and Silurian back-arc basins (VAMS-type deposits ...
A total of 12 alkalic porphyry centres of Late Ordovician age have been discovered in two mineral districts within NSW. The alkalic porphyry deposits are hosted within shoshonitic volcanic centres that formed where a major cross-arc basement structure (the Lachlan Transverse Zone) cut the Ordovician Macquarie Arc.
Abstract. The Yiddah porphyry Cu-(Au-Mo) system of central-southern New South Wales is contained within the Ordovician-Silurian Goonumbla-Trangie Volcanic Belt of the Macquarie Arc, 12km north of the village of Barmedman and 2 km east of the Gilmore Fault Zone.
The Ordovician to early Silurian Macquarie Arc of eastern Australia is a volcanic-dominated terrane that hosts a range of deposit types including large to world-class porphyry Au–Cu systems such as Cadia and Northparkes (e.g. Cadia East, Cadia Hill, Ridgeway, Endeavour 22, Endeavour 26 North,
porphyry systems (Table 1). Alkalic porphyry Au–Cu deposits are unusual varia-tions on the porphyry copper theme. The systematics ... alkalic porphyry systems of the Macquarie Arc and discusses their exploration implications. Also reviewed brieﬂy are other mineralisation styles that characterise
The normal faults that define the subbasin predate porphyry mineralization and are oriented parallel to a major arc-transverse lineament. Porphyry Au-Cu mineralization was controlled by reactivation of the subbasin during postorogenic extension as the Macquarie Arc was accreted to the Gondwana margin in the early Silurian.
Porphyry copper deposit Jump to navigation Jump to search. Morenci ... The presence of intra-arc fault systems are beneficial, as they can localize porphyry development. ... "Descriptive model of porphyry Cu," in Mineral Deposit Models, US Geological Survey, Bulletin 1693, ...
The Macquarie Arc, Lachlan Orogen, New South Wales: Its evolution, tectonic setting and mineral deposits. Article ... The Macquarie Arc hosts porphyry Cu-Au, epithermal, and.
The Macquarie Arc is part of the eastern sub-province of the Lachlan Orogen (Fig. 1) and is the host to numerous porphyry Au–Cu deposits. It consists mainly of subduction-related Ordovician intermediate and mafic volcanic, volcaniclastic and associated intrusive rocks and was accreted to Gondwana in the Early Silurian, and underwent rifting ...
exist within the Macquarie arc making a total of twenty five porphyry systems (Smith et al., 2003). In addition a further ten significant Cu and/or Au systems that may be porphyry-related in the broader sense exist (Table 1; Figure 1).
Macquarie Arc, New South Wales PREFACE The alkalic porphyry & epithermal deposits of the Ordovician Macquarie Arc, New South Wales Overview The Society of Economic Geologists Monash Student Chapter 2017 field excursion comprises visits to some of the Australia's most significant porphyry deposits and their associated epithermal systems.
While earlier magmatic-plutonic episodes in the CNEO and NNEO were probably subduction related, early Cretaceous magmatism was related to rifting and opening of the Tasman Sea (Ewart et al. 1992). All these magmatic stages are associated with numerous subeconomic porphyry style Cu-Mo-Au systems of the continental margin type.
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