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The submarine hydrothermal activity, its occurrence, the minerals and the chemical features of the hydrothermal sulfides in the Mariana Trough are described. The mineral phases and their existing forms of the hydrothermal products formed at high temperature and intermediate-low temperature are discussed. It has been considered that the hydrothermal activity in the Mariana Trough isa small-scale one, different from those on the mid-ocean ridges and in the deep fracture zones. 相似文献
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