| RAY Durbar,BANERJEE Ranadip,MAZUMDER Aninda,PAROPKARI Anil L.,MUKHOPADHYAY Subir,BALAKRISHNAN Srinivasan. 2018. Mineralogical and geochemical variation in hydrothermal sulfides from Vienna Woods field, Manus Basin, Papua New Guinea: constraints on their evolution. Acta Oceanologica Sinica, 37(4):22－33 |
| Mineralogical and geochemical variation in hydrothermal sulfides from Vienna Woods field, Manus Basin, Papua New Guinea: constraints on their evolution |
| Mineralogical and geochemical variation in hydrothermal sulfides from Vienna Woods field, Manus Basin, Papua New Guinea: constraints on their evolution |
| Received:June 05, 2017 |
| DOI：10.1007/s13131-018-1194-4 |
| Key words:Manus Basin hydrothermal chimney talus geochemistry mineralogy |
| 中文关键词: Manus Basin hydrothermal chimney talus geochemistry mineralogy |
| 基金项目:The GEOSINK project funded by CSIR, India; the CSIR-NIO contribution No. 6111. |
| Author Name | Affiliation | E-mail | | RAY Durbar | CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India | dray@nio.org | | BANERJEE Ranadip | CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India | | | MAZUMDER Aninda | CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India | | | PAROPKARI Anil L. | CSIR-National Institute of Oceanography, Dona Paula, Goa 403004, India | | | MUKHOPADHYAY Subir | Department of Geological Sciences, Jadavpur University, Kolkata 700032, India | | | BALAKRISHNAN Srinivasan | Department of Earth Sciences, Pondicherry University, Puducherry 605014, India | |
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| Abstract: |
| 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. |
| 中文摘要: |
| 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. |
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