Mineralogical and geochemical variation in hydrothermal sulfides from Vienna Woods field, Manus Basin, Papua New Guinea: constraints on their evolution

Polymetallic sulfides from two hydrothermal chimneys and talus deposit from the Vienna Woods field of Manus Basin were studied for mineralogy, elemental composition, and S-isotope ratio to understand their evolution. The factors including the nature of source fluid, mineral paragenesis, and related...

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Bibliographic Details
Published in:Acta oceanologica Sinica 2018-04, Vol.37 (4), p.22-33
Main Authors: Ray, Durbar, Banerjee, Ranadip, Mazumder, Aninda, Paropkari, Anil L., Mukhopadhyay, Subir, Balakrishnan, Srinivasan
Format: Article
Language:English
Subjects:
Basins
Chemical composition
Chimneys
Climatology
Composition
Copper
Earth and Environmental Science
Earth Sciences
Ecology
Engineering Fluid Dynamics
Environmental Chemistry
Evolution
Fault lines
Fluids
Geochemistry
Hydrothermal fields
Iron
Isotope composition
Isotope ratios
Isotopes
Marine & Freshwater Sciences
Mineralogy
Minerals
Oceanography
Precipitation
Ratios
Sulfides
Zinc
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Summary:Polymetallic sulfides from two hydrothermal chimneys and talus deposit from the Vienna Woods field of Manus Basin were studied for mineralogy, elemental composition, and S-isotope ratio to understand their evolution. The factors including the nature of source fluid, mineral paragenesis, and related geochemical processes have been discussed. Mineralogy and elemental concentration of Cu and Fe-rich large chimney at the central part of this hydrothermal field was completely different from the smaller Zn-rich peripheral chimney and Fe-rich talus deposit, suggesting the variable degree of alterations generate physico-chemically different source fluids responsible for these hydrothermal structures. Similarly, S-isotope ratios also indicate chemically diverse fluids and different modes of precipitation were involved in their evolution. Distinct mineral zonings and associated elemental and isotopic compositions within individual deposit confirm paragenetic shifts were involved during their growth process.
ISSN:0253-505X
1869-1099
DOI:10.1007/s13131-018-1194-4