A hydrothermal deposit from explorer ridge in the northeast Pacific Ocean |
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| Authors: | E.V. Grill R.L. Chase R.D. MacDonald J.W. Murray |
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| Affiliation: | 1. Department of Oceanography, University of British Columbia, Vancouver, B.C. V6T 1W5 Canada;2. Department of Geological Sciences, University of British Columbia, Vancouver, B.C. V6T 1W5 Canada |
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| Abstract: | Crusts composed of nontronite and ferromanganese oxides were recovered from Explorer Ridge, a spreading ridge segment in the northeastern Pacific Ocean located off the west coast of Canada. The chemical and mineralogical composition of the crusts closely resembles that of the mound-like hydrothermal deposits recently discovered at the FAMOUS site on the Mid-Atlantic Ridge and on the Galapagos spreading centre. Compositional anomalies suggest that the crusts are precipitates of hydrothermal vent solutions which were ejected discontinuously and subsequently mixed with seawater. |
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