Orthomagmatic quartz and post-magmatic carbonate veins in a reported porphyry copper deposit, Andean Intrusive Suite, Livingston Island, South Shetland Islands
作者： D. C. Armstrong , R. C. R. Willan
DOI: 10.1007/BF02280793
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摘要: A previously reported porphyry Cu + Mo deposit in an Eocene pluton within the South Shetland Island magmatic arc has been re-interpreted as three distinct hydrothermal assemblages. The oldest assemblage (1) exsolved under confinement from deep (∼6 km?) cooling magma whereas assemblages (2) and (3) formed during tectonic ± episodes at depths of < 1.5 km late Cenozoic. occur over 5 × 11 mapped Barnard Point tonalite pluton.
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