Chemical composition of hydrothermal deposits and vulcanites from the Menez Gwen vent field, Mid-Atlantic Ridge

Surface hydrothermal deposits of the shallow-water Menez Gwen vent field located in the rift zone of the Mid-Atlantic Ridge are mostly composed of nonmetalliferous minerals in contrast to sulfide deposits of deep-water fields. Here sulfide minerals occur only in dispersed form. High-temperature sulf...

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Bibliographic Details
Main Authors: Bogdanov, Yury A, Lein, Alla Yu, Sagalevich, Anatoly M
Format: Dataset
Language:English
Published: PANGAEA 2005
Subjects:
Akademik Mstislav Keldysh
AMK49
AMK49-4574
Archive of Ocean Data
ARCOD
Menez Gwen vent field
Central North Atlantic
MIR
MIR deep-sea manned submersible
Mid-Atlantic Ridge
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.763329
https://doi.org/10.1594/PANGAEA.763329
Description
Summary:Surface hydrothermal deposits of the shallow-water Menez Gwen vent field located in the rift zone of the Mid-Atlantic Ridge are mostly composed of nonmetalliferous minerals in contrast to sulfide deposits of deep-water fields. Here sulfide minerals occur only in dispersed form. High-temperature sulfide deposits strongly enriched in copper and zinc occur only immediately below the surface of the bottom. This is related to subsurface boiling and phase separation of initial high-temperature hydrothermal ore-bearing solution that ascends from the interior to the floor surface.

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