Bulk geochemistry, sulfur isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian Ridge
The Yuhuang-1 hydrothermal field (HF) was discovered recently on the ultraslow-spreading Southwest Indian Ridge (segment 29). This field comprises two main sulfide deposition areas, including the southwest sulfide area (SWS) and the northeast sulfide area (NES), all of which are about 500 m in diame...
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Language: | English |
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Online Access: | http://ir.gig.ac.cn/handle/344008/38818 https://doi.org/10.1016/j.oregeorev.2018.04.007 |
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ftchacadscgigcas:oai:ir.gig.ac.cn:344008/38818 2023-05-15T15:17:14+02:00 Bulk geochemistry, sulfur isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian Ridge Liao, Shili Tao, Chunhui Li, Huaiming Barriga, Fernando J. A. S. Liang, Jin Yang, Weifang Yu, Junyu Zhu, Chuanwei 2018-05-01 http://ir.gig.ac.cn/handle/344008/38818 https://doi.org/10.1016/j.oregeorev.2018.04.007 英语 eng ELSEVIER SCIENCE BV ORE GEOLOGY REVIEWS http://ir.gig.ac.cn/handle/344008/38818 doi:10.1016/j.oregeorev.2018.04.007 Geology Mineralogy Mining & Mineral Processing Bulk geochemistry S isotopes Yuhuang-1 hydrothermal field Southwest Indian Ridge MID-ATLANTIC RIDGE EAST PACIFIC RISE MASSIVE SULFIDE DEPOSITS ARCTIC MIDOCEAN RIDGE DE-FUCA RIDGE SULFATE REDUCTION VENT FLUIDS MAGMATIC CONTRIBUTION CHIMNEY MINERALS ULTRAMAFIC ROCKS 期刊论文 2018 ftchacadscgigcas https://doi.org/10.1016/j.oregeorev.2018.04.007 2020-12-22T07:21:27Z The Yuhuang-1 hydrothermal field (HF) was discovered recently on the ultraslow-spreading Southwest Indian Ridge (segment 29). This field comprises two main sulfide deposition areas, including the southwest sulfide area (SWS) and the northeast sulfide area (NES), all of which are about 500 m in diameter. Sulfide-rich samples collected on the seafloor consist of zinc-rich, iron-rich, and silicified samples. The Zn-rich samples contain up to 60% sphalerite and 5% chalcopyrite, while iron-rich samples primarily contain pyrite and marcasite, and silicified sulfide rich samples primarily consist of amorphous silicon (70%), pyrite (15%-20%), and minor sphalerite. Sulfide rich samples generally show mound features with similar mineral assemblages, except that the NES contains pyrrhotite, indicating precipitation under relatively reduced conditions. Bulk geochemistry of the SWS and NES massive sulfide samples display similar Au, Co, Ni, and Si contents and Ni/Co ratios, similar to mafic related HFs, while the Sn content and the Cd/Zn ratio are comparable to ultramafic-related HFs, which probably indicates a multi-stage origin. Sulfides rich samples from the SWS have delta S-34 values ranging from -1.37 parts per thousand to 6.02 parts per thousand with a median value of 0.83 parts per thousand. Currently, the delta S-34 value of -1.37 parts per thousand is the lowest sulfur isotope composition observed in HFs on ultraslow-spreading ridges. Bacteria-derived sulfur, which is calculated to be 10%-25% of the total sulfur component, is likely the cause of the negative sulfur isotope composition. Conversely, the delta S-34 values of the seafloor sulfides rich samples in the NES ranges from 3.75 parts per thousand to 8.73 parts per thousand with a median value of 4.74 parts per thousand, which is distinctly heavier than that of the SWS. This study suggests that the SWS and NES of the Yuhuang-1 HF probably formed during different mineralization stages. Report Arctic Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) Arctic Indian Mid-Atlantic Ridge Nes ENVELOPE(7.634,7.634,62.795,62.795) Nes’ ENVELOPE(44.681,44.681,66.600,66.600) Pacific Ore Geology Reviews 96 13 27 |
institution |
Open Polar |
collection |
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchacadscgigcas |
language |
English |
topic |
Geology Mineralogy Mining & Mineral Processing Bulk geochemistry S isotopes Yuhuang-1 hydrothermal field Southwest Indian Ridge MID-ATLANTIC RIDGE EAST PACIFIC RISE MASSIVE SULFIDE DEPOSITS ARCTIC MIDOCEAN RIDGE DE-FUCA RIDGE SULFATE REDUCTION VENT FLUIDS MAGMATIC CONTRIBUTION CHIMNEY MINERALS ULTRAMAFIC ROCKS |
spellingShingle |
Geology Mineralogy Mining & Mineral Processing Bulk geochemistry S isotopes Yuhuang-1 hydrothermal field Southwest Indian Ridge MID-ATLANTIC RIDGE EAST PACIFIC RISE MASSIVE SULFIDE DEPOSITS ARCTIC MIDOCEAN RIDGE DE-FUCA RIDGE SULFATE REDUCTION VENT FLUIDS MAGMATIC CONTRIBUTION CHIMNEY MINERALS ULTRAMAFIC ROCKS Liao, Shili Tao, Chunhui Li, Huaiming Barriga, Fernando J. A. S. Liang, Jin Yang, Weifang Yu, Junyu Zhu, Chuanwei Bulk geochemistry, sulfur isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian Ridge |
topic_facet |
Geology Mineralogy Mining & Mineral Processing Bulk geochemistry S isotopes Yuhuang-1 hydrothermal field Southwest Indian Ridge MID-ATLANTIC RIDGE EAST PACIFIC RISE MASSIVE SULFIDE DEPOSITS ARCTIC MIDOCEAN RIDGE DE-FUCA RIDGE SULFATE REDUCTION VENT FLUIDS MAGMATIC CONTRIBUTION CHIMNEY MINERALS ULTRAMAFIC ROCKS |
description |
The Yuhuang-1 hydrothermal field (HF) was discovered recently on the ultraslow-spreading Southwest Indian Ridge (segment 29). This field comprises two main sulfide deposition areas, including the southwest sulfide area (SWS) and the northeast sulfide area (NES), all of which are about 500 m in diameter. Sulfide-rich samples collected on the seafloor consist of zinc-rich, iron-rich, and silicified samples. The Zn-rich samples contain up to 60% sphalerite and 5% chalcopyrite, while iron-rich samples primarily contain pyrite and marcasite, and silicified sulfide rich samples primarily consist of amorphous silicon (70%), pyrite (15%-20%), and minor sphalerite. Sulfide rich samples generally show mound features with similar mineral assemblages, except that the NES contains pyrrhotite, indicating precipitation under relatively reduced conditions. Bulk geochemistry of the SWS and NES massive sulfide samples display similar Au, Co, Ni, and Si contents and Ni/Co ratios, similar to mafic related HFs, while the Sn content and the Cd/Zn ratio are comparable to ultramafic-related HFs, which probably indicates a multi-stage origin. Sulfides rich samples from the SWS have delta S-34 values ranging from -1.37 parts per thousand to 6.02 parts per thousand with a median value of 0.83 parts per thousand. Currently, the delta S-34 value of -1.37 parts per thousand is the lowest sulfur isotope composition observed in HFs on ultraslow-spreading ridges. Bacteria-derived sulfur, which is calculated to be 10%-25% of the total sulfur component, is likely the cause of the negative sulfur isotope composition. Conversely, the delta S-34 values of the seafloor sulfides rich samples in the NES ranges from 3.75 parts per thousand to 8.73 parts per thousand with a median value of 4.74 parts per thousand, which is distinctly heavier than that of the SWS. This study suggests that the SWS and NES of the Yuhuang-1 HF probably formed during different mineralization stages. |
format |
Report |
author |
Liao, Shili Tao, Chunhui Li, Huaiming Barriga, Fernando J. A. S. Liang, Jin Yang, Weifang Yu, Junyu Zhu, Chuanwei |
author_facet |
Liao, Shili Tao, Chunhui Li, Huaiming Barriga, Fernando J. A. S. Liang, Jin Yang, Weifang Yu, Junyu Zhu, Chuanwei |
author_sort |
Liao, Shili |
title |
Bulk geochemistry, sulfur isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian Ridge |
title_short |
Bulk geochemistry, sulfur isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian Ridge |
title_full |
Bulk geochemistry, sulfur isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian Ridge |
title_fullStr |
Bulk geochemistry, sulfur isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian Ridge |
title_full_unstemmed |
Bulk geochemistry, sulfur isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian Ridge |
title_sort |
bulk geochemistry, sulfur isotope characteristics of the yuhuang-1 hydrothermal field on the ultraslow-spreading southwest indian ridge |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2018 |
url |
http://ir.gig.ac.cn/handle/344008/38818 https://doi.org/10.1016/j.oregeorev.2018.04.007 |
long_lat |
ENVELOPE(7.634,7.634,62.795,62.795) ENVELOPE(44.681,44.681,66.600,66.600) |
geographic |
Arctic Indian Mid-Atlantic Ridge Nes Nes’ Pacific |
geographic_facet |
Arctic Indian Mid-Atlantic Ridge Nes Nes’ Pacific |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
ORE GEOLOGY REVIEWS http://ir.gig.ac.cn/handle/344008/38818 doi:10.1016/j.oregeorev.2018.04.007 |
op_doi |
https://doi.org/10.1016/j.oregeorev.2018.04.007 |
container_title |
Ore Geology Reviews |
container_volume |
96 |
container_start_page |
13 |
op_container_end_page |
27 |
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1766347503665414144 |