Massive deep-sea sulphide ore deposits discovered on the East Pacific Rise
| Type | Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Date | 1979-02 | ||||||||
| Language | English | ||||||||
| Author(s) | Francheteau Jean, Needham H.D., Choukroune P., Juteau T., Seguret M., Ballard R.D., Fox P.J., Normark W., Carranza X, Cordoba D., Guerrero J., Rangin C., Bougault Henri, Cambon Pierre, Hekinian Roger | ||||||||
| Source | Nature (Macmillan Journals), 1979-02 , Vol. 277 , N. 5697 , P. 523-528 | ||||||||
| Mot-Clé(s) | Histoire Ifremer | ||||||||
| Abstract | Massive ore-grade zinc, copper and iron sulphide deposits have been found at the axis of the East Pacific Rise.Although their presence on the deep ocean-floor had been predicted there was no supporting observational evidence. The East Pacific Rise deposits represent a modern analogue of Cyprus-type sulphide ores associated with ophiolitic rocks on land.They contain at least 29% zinc metal and 6% metallic copper.Their discovery will provide a new focus for deep-sea exploration, leading to new assessments of the concentration of metals in the upper layers of the oceanic crust. [NOT CONTROLLED OCR] | ||||||||
| Full Text |
|