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...
Main Authors: | , , |
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Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2005
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Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.763329 https://doi.org/10.1594/PANGAEA.763329 |
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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