Abstract
The first hydrothermal fluid samples collected along the slow-spreading Mid-Atlantic Ridge (MAR) are remarkably similar in composition and temperature to fluids collected along the shallower, faster-spreading East Pacific Rise (EPR). The MAR fluids, like those from the EPR, appear to be in equilibrium with a greenschist-facies mineral assemblage. In contrast to the EPR, the more fractured nature of the MAR apparently allows fluids at one of the MAR sites to interact with weathered basalt.
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Campbell, A., Palmer, M., Klinkhammer, G. et al. Chemistry of hot springs on the Mid-Atlantic Ridge. Nature 335, 514–519 (1988). https://doi.org/10.1038/335514a0
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DOI: https://doi.org/10.1038/335514a0
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