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      The East Pacific Rise near 21°N, 13°N and 20°S: inferences for along-strike variability of axial processes of the Mid-Ocean Ridge

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      Earth and Planetary Science Letters
      Elsevier BV

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          Present-day plate motions

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            Submarine thermal sprirngs on the galapagos rift.

            The submarine hydrothermal activity on and near the Galápagos Rift has been explored with the aid of the deep submersible Alvin. Analyses of water samples from hydrothermal vents reveal that hydrothermal activity provides significant or dominant sources and sinks for several components of seawater; studies of conductive and convective heat transfer suggest that two-thirds of the heat lost from new oceanic lithosphere at the Galápagos Rift in the first million years may be vented from thermal springs, predominantly along the axial ridge within the rift valley. The vent areas are populated by animal communities. They appear to utilize chemosynthesis by sulfur-oxidizing bacteria to derive their entire energy supply from reactions between the seawater and the rocks at high temperatures, rather than photosynthesis.
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              The Implications of Terrestrial Heat Flow Observations on Current Tectonic and Geochemical Models of the Crust and Upper Mantle of the Earth

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                Author and article information

                Journal
                Earth and Planetary Science Letters
                Earth and Planetary Science Letters
                Elsevier BV
                0012821X
                July 1983
                July 1983
                : 64
                : 1
                : 93-116
                Article
                10.1016/0012-821X(83)90055-9
                ad82a0c5-07f6-4b28-a0db-9a593e8ef918
                © 1983

                http://www.elsevier.com/tdm/userlicense/1.0/

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