Conference Proceedings
1995 AusIMM New Zealand Branch Annual Conference
Conference Proceedings
1995 AusIMM New Zealand Branch Annual Conference
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PACMANUS: An Active Seafloor Hydrothermal Field on Siliceous Volcanic Rocks in the Eastern Manus Basin, Papua New Guinea
PACMANUS
is an actively-forming seafloor analogue of volcanic-hosted massive sulfide
orebodies, situated on the crest of an andesite-dacite-rhyodacite ridge
overlying rifted older arc crust in a back-arc basin. Hydrothermal deposits
range from Mn-oxide crusts to Cu-Zn-rich massive sulfide mounds and chimneys
containing significant Au and Ag. Preliminary data suggest a substantial
magmatic component to fluids and metal sources, and we speculate that PACMANUS
is the cap to a complete hydrothermal system including subvolcanic and
intrusive-related mineralisation.
is an actively-forming seafloor analogue of volcanic-hosted massive sulfide
orebodies, situated on the crest of an andesite-dacite-rhyodacite ridge
overlying rifted older arc crust in a back-arc basin. Hydrothermal deposits
range from Mn-oxide crusts to Cu-Zn-rich massive sulfide mounds and chimneys
containing significant Au and Ag. Preliminary data suggest a substantial
magmatic component to fluids and metal sources, and we speculate that PACMANUS
is the cap to a complete hydrothermal system including subvolcanic and
intrusive-related mineralisation.
Contributor(s):
R A Binns, J M Parr, S D Scott, J B Gemmell, P M Herzig
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- Published: 1995
- PDF Size: 0.965 Mb.
- Unique ID: P199509009NZ