SeaMin

About the project

SeaMin brings together researchers from Macau SAR, Mainland China, Europe and Australia experienced in seafloor massive sulfide (SMS) deposits. It applies state-of-the-art in-situ elemental and isotopic techniques to seafloor sulfide ores and sulfide-bearing host rocks to investigate complex ore-forming processes.

The work focuses on micrometer- to sub-micrometer-scale elemental and isotopic signatures of sulfide deposits from deep-sea hydrothermal vent fields at the Mid-Atlantic Ridge (slow-spreading). Three tasks structure the project: (1) micrometer- to sub-micrometer-scale elemental variations within sulfides and metal deportment; (2) micrometer-scale isotopic variations within sulfides and fluid evolution; (3) a detailed genetic model for massive sulfide mineralization at the Mid-Atlantic Ridge.

Research team

Ágata Alveirinho Dias

Principal Investigator

Karen Tagulao

Team member

Wenhong Qiu (Johnson) · 邱文洪

Team member

Sven Petersen

Team member · GEOMAR

Ding Teng · 丁腾

Postdoctoral researcher · Hohai University, Nanjing

Pedro Costa

PhD Student and Research Assistant · ISE–USJ, Macau

Bernardo Ferreira

MSc Student · FCUL, Portugal

Shili Liao · 廖时理

Collaborator · SIO–SOA, Hangzhou

Chunhui Tao

Collaborator · SIO–SOA, Hangzhou

Yafei Wu

Team member · CUG, China (until Aug 2023)

Publications

Liao S., Tao C., Dias Á. A., et al. (2024). Sediment geochemistry reveals abundant off-axis hydrothermal fields on the ultraslow-spreading Southwest Indian Ridge. Earth and Planetary Science Letters, 643, 118916. PDF · doi

Dias Á. A. (2024). Hydrothermal fields within the Portuguese seafloor (MAR)… Earth Systems Summer School, Aveiro (invited lecture).

Ding T., Zhu C., Dias Á. A., Liang J. (2024). Study on the SMS mineralization along 3–6°S, CIR. 17th National Conference on Mineral Deposits, Guiyang.

Ding T., Tao C., Dias Á. A., Liang J. (2024). Sulfide mineralization mechanism in ultramafic-hosted systems… Korea–China Collaborative Workshop, Busan.

Liao S., Tao C., Dias Á. A., et al. (2023). Evidence of a distal axis inactive high-temperature hydrothermal field on the SWIR… Marine Geology, 465, 107158. PDF · doi

Costa P., Moreira A., Dias Á. A., et al. (2023). Seafloor Sediments of the Gigante Seamount Complex… Goldschmidt 2023.

Zhang H., Chen K., Tao C., Dias Á. A., et al. (2023). Occurrence and precipitation mechanism of silver in pyrite… Edmond hydrothermal field. Ore Geology Reviews, 105471. doi

Ding T., Dias Á. A., Wang J., et al. (2022). Serpentinization and its implications for ultramafic-hosted sulfide mineralization… Tianzuo, SWIR. Marine Geology. PDF · doi

Liao S., Tao C., et al., Dias Á. A. (2022). Hydrothermal remobilization of subseafloor sulfide mineralization… Geochimica et Cosmochimica Acta, 335, 56–67. PDF · doi

Yang W., Liao S., Dias Á. A., et al. (2022). Geochemistry, sulfur and lead isotopic composition… Duanqiao hydrothermal field, SWIR. International Geology Review. PDF · doi

Dias Á. A., Relvas J. M. R. S., Marques A. F., et al. (2022). Variability of the hydrothermal fields within the Portuguese seafloor (MAR). Goldschmidt 2022.

Qiu W., Dias Á. A., Costa I. M. A., Barriga F. (2022). The evolution of sulfur isotope in hydrothermal fluids… Menez Gwen (MAR). Goldschmidt 2022.

Costa P., Dias Á. A. (2022). Geochemical and mineralogical investigations of seafloor oxyhydroxides… Goldschmidt 2022.