BIBLIOS

   Ciências References Management System

Visitor Mode (Login)
Need help?


Back

Publication details

Document type
Journal articles

Document subtype
Full paper

Title
Sulfur isotopic compositions of sulfides along the Southwest Indian Ridge: implications for mineralization in ultramafic rocks

Participants in the publication
Teng Ding (Author)
Chunhui Tao (Author)
Ágata Alveirinho Dias (Author)
IDL
 Jin Liang (Author)
Jie Chen (Author)
Bin Wu (Author)
Dongsheng Ma (Author)
Rongqing Zhang (Author)
Jia Wang (Author)
Shili Liao (Author)
Yuan Wang (Author)
Weifang Yang (Author)
Jia Liu (Author)
Wei Li (Author)
Guoyin Zhang (Author)
Hui Huang (Author)

Summary
The recently explored Tianzuo hydrothermal field in serpentinized ultramafic rocks of the amagmatic segment of the ultraslow-spreading Southwest Indian Ridge displays high-temperature sulfide mineralization (isocubanite, sphalerite, and minor pyrrhotite) and low-temperature (pyrite and covellite) phases. Pyrite can be subdivided into pyrite-I and -II, with the former generally having a pseudomorphic texture after pyrrhotite and the latter typically growing around isocubanite, sphalerite, and pyrite-I or occurring as individual grains in quartz veinlets. The sulfide minerals have the greatest range of δ34S values (− 23.8 to 14.1‰), found so far among modern sediment-starved ridges, with distinct δ34S values for low- and high-temperature mineral phases. The high δ34S values of isocubanite (9.6 to 12.2‰) and sphalerite (9.1 to 14.1‰) suggest that sulfate, which precipitated from seawater during an early low-temperature phase of hydrothermal circulation, was the main sulfur source for these sulfides. Pyrite-II has the lowest and most variable δ34S values (− 23.8 to − 3.6‰), suggesting microbial sulfate reduction. Pyrite-I has variable and generally positive δ34S values (− 0.1 to 12.0‰), with sulfur being inherited from pyrrhotite from the original thermochemical reduction of sulfate, mixed with volcanogenic sulfur. Intermittent magmatism represented by gabbroic intrusions, and high permeability caused by well-developed fractures associated with detachment faults, contributed to the formation of sulfides in the Tianzuo hydrothermal field. These factors possibly control sulfide mineralization in amagmatic segments of ultraslow-spreading ridges.

Date of Submisson/Request
2020-04-28
Date of Acceptance
2020-10-22
Date of Publication
2020-10-31

Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Where published
Mineralium Deposita

Publication Identifiers
ISSN - 0026-4598

Publisher
Springer Science and Business Media LLC

Document Identifiers
DOI - https://doi.org/10.1007/s00126-020-01025-0
URL - http://dx.doi.org/10.1007/s00126-020-01025-0


Export

APA
Teng Ding, Chunhui Tao, Ágata Alveirinho Dias, Jin Liang, Jie Chen, Bin Wu, Dongsheng Ma, Rongqing Zhang, Jia Wang, Shili Liao, Yuan Wang, Weifang Yang, Jia Liu, Wei Li, Guoyin Zhang, Hui Huang, (2020). Sulfur isotopic compositions of sulfides along the Southwest Indian Ridge: implications for mineralization in ultramafic rocks. Mineralium Deposita, ISSN 0026-4598. eISSN . http://dx.doi.org/10.1007/s00126-020-01025-0

IEEE
Teng Ding, Chunhui Tao, Ágata Alveirinho Dias, Jin Liang, Jie Chen, Bin Wu, Dongsheng Ma, Rongqing Zhang, Jia Wang, Shili Liao, Yuan Wang, Weifang Yang, Jia Liu, Wei Li, Guoyin Zhang, Hui Huang, "Sulfur isotopic compositions of sulfides along the Southwest Indian Ridge: implications for mineralization in ultramafic rocks" in Mineralium Deposita, 2020. 10.1007/s00126-020-01025-0

BIBTEX
@article{50765, author = {Teng Ding and Chunhui Tao and Ágata Alveirinho Dias and Jin Liang and Jie Chen and Bin Wu and Dongsheng Ma and Rongqing Zhang and Jia Wang and Shili Liao and Yuan Wang and Weifang Yang and Jia Liu and Wei Li and Guoyin Zhang and Hui Huang}, title = {Sulfur isotopic compositions of sulfides along the Southwest Indian Ridge: implications for mineralization in ultramafic rocks}, journal = {Mineralium Deposita}, year = 2020, }