Ordovician Intrusive-related Gold-Copper Mineralization in West-Central New South Wales, Australia

被引：0
|
作者：
David COOKE
机构：
[1] Australia
[2] Centre for Ore Deposit Research
[3] GPO Box 252-79
[4] Hobart 7001
[5] University of Tasmania
来源：
Acta Geologica Sinica(English Edition) | 2000年 / 04期
关键词：
intrusive-related gold-copper deposit; porphyry gold-copper deposit; New South Wales; Australia; diagonal intra-belt trend;
D O I：
暂无
中图分类号：
P618.5 [贵重金属];
学科分类号：
0709 ; 081803 ;
摘要：
Three major types of Ordovician intrusive-related gold-copper deposits are recognized in central-west New South Wales, Australia: porphyry, skarn and high sulphidation epithermal deposits. These deposits are mainly distributed within two Ordovician volcano-intrusive belts of the Lachlan Fold Belt: the Orange-Wellington Belt and the Parkes-Narromine Belt. Available isotopic age data suggest that mineralization of the three types of deposits is essentially coeval with the Ordovician intrusive rocks (480-430 Ma).Porphyry gold-copper deposits can be further divided into two groups. The first group is associated with monzonite showing shoshonitic features, represented by Cadia and Goonumbla. The second group is associated with diorite and dacite, including the Copper Hill and Cargo gold-copper deposits. Gold skarn is associated with Late Ordovician (430-439 Ma) monzonitic intrusive complexes in the Junction Reefs area (Sheahan-Grants, Frenchmans, and Cor-nishmens), Endeavour 6, 7 and 44, Big and Little Cadia
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页码：807 / 826
页数：20
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