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| Van Dover, C.l.; Colaço, Ana; Collins, P.c.; Croot, P.; Metaxas, A.; Murton, B.j.; Swaddling, A.; Boschen-rose, R.e.; Carlsson, J.; Cuyvers, L.; Fukushima, T.; Gartman, A.; Kennedy, R.; Kriete, C.; Mestre, N.c.; Molodtsova, T.; Myhrvold, A.; Pelleter, Ewan; Popoola, S.o.; Qian, P.-y.; Sarrazin, Jozee; Sharma, R.; Suh, Y.j.; Sylvan, J.b.; Tao, C.; Tomczak, M.; Vermilye, J.. |
| Polymetallic sulfide (PMS) deposits produced at hydrothermal vents in the deep sea are of potential interest to miners. Hydrothermally active sulfide ecosystems are valued for the extraordinary chemosynthetic communities that they support. Many countries, including Canada, Portugal, and the United States, protect vent ecosystems in their Exclusive Economic Zones. When hydrothermal activity ceases temporarily (dormancy) or permanently (extinction), the habitat and associated ecosystem change dramatically. Until recently, so-called “inactive sulfide” habitats, either dormant or extinct, received little attention from biologists. However, the need for environmental management of deep-sea mining places new imperatives for building scientific understanding of... |
| Tipo: Text |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00643/75525/76401.pdf |
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| Jamieson, J.w.; Gartman, A.. |
| Hydrothermal activity results in the formation of hydrothermal mineral deposits, including seafloor massive sulfide deposits, at oceanic spreading ridges, arcs, and back-arcs. As hydrothermal systems age, the mineral deposits eventually become severed from the heat source and fluid-flow pathways responsible for their formation and become extinct. The timescales and processes by which this cessation of activity occurs, and the resultant distinction between hydrothermally active and inactive deposits has recently taken on policy implications related to the potential issuance of exploitation leases for seafloor massive sulfide deposits by the International Seabed Authority in Areas Beyond National Jurisdiction. Here, we discuss the scientific rationale behind... |
| Tipo: Text |
Palavras-chave: Hydrothermal systems; Seafloor massive sulfide deposits; Inactive deposits; Seafloor mining. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00618/72972/72039.pdf |
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