Sedimentology, mineralogy, and geochemistry of hydrothermal deposits at DSDP Site 54-424

On Leg 54 of the Deep Sea Drilling Project, four holes were drilled at Site 424, about 20 km south of the Galapagos Spreading Center (GSC). The holes were situated less than 300 meters from each other on a north-south line in water about 2700 meters deep, near 0°35'N and 86°07'W. The age of the basaltic basement here is about 0.60 to 0.62 m.y. (Hekinian et al., 1978). This particular site was chosen because a major sea-floor hydrothermal system, with associated sediments, occurs in this area (Klitgord and Mudie, 1974; Lonsdale, 1977). […]