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  • Mid-ocean Ridges - Woods Hole Oceanographic Institution
    The fastest-spreading ridge moves at about 150 millimeters (about 6 inches) a year What kinds of geologic features can be found along these ridges? Mid-ocean ridges contain a wide variety of features, including ridges, rifts, valleys, seamounts, hydrothermal vents, fault zones, and more
  • Mid-ocean Ridges – Woods Hole Oceanographic Institution
    As the oceanic plates move apart at mid-ocean ridges, rocks from Earth's mantle, far below, rise to fill the void, mostly via slow plastic flow
  • Exploring The Global Mid-Ocean Ridge - Woods Hole Oceanographic Institution
    The RIDGE Program (Ridge InterDisciplinary Global Experiments-described below) embodies and promotes the spirit of this new cross-disciplinary approach to mid-ocean ridge investigations Technological developments also had an enormous influence on our perspective
  • Mid-Atlantic Ridge Volcanic Processes - Woods Hole Oceanographic . . .
    These data also enable the design of future detailed geophysical and geochemical Mid-Atlantic Ridge studies at the same scale used to understand subaerial volcanic eruptions The Mid-Atlantic Ridge is composed of discrete spreading segments that are tens of kilometers long, and offset by transform faults and nontransform offsets
  • Woods Hole Oceanographic Institution: Mid-Ocean Ridges
    The mid-ocean ridge is a continuous chain of volcanoes on the ocean floor where lava erupts and the crust of the Earth is created Nearly every day, somewhere on the crest of the mid-ocean ridge, there is likely to be an eruption of lava or an intrusion of magma that builds the ocean crust Enter this section of Dive and Discover to learn more about Mid-Ocean Ridges
  • Scientists Report New Type of Mid-Ocean Ridge in Remote Parts of the . . .
    Scientists from the Woods Hole Oceanographic Institution (WHOI) have identified a new type of ocean ridge that is spreading so slowly that Earth's mantle is exposed over large regions of the sea floor Their findings of a new ultraslow class of ridge, reported in the November 27 issue of the journal Nature, offer a major change in thinking about the formation of the great crustal plates that
  • Hitting the Hotspots - Woods Hole Oceanographic Institution
    The great volcanic mid-ocean ridge system stretches continuously around the globe for 60,000 kilometers, nearly all of it hidden beneath the world's oceans
  • Slow-Spreading Mid-Ocean Ridge - Woods Hole Oceanographic Institution
    Slow spreading ridges like the Mid-Atlantic Ridge generally have large, wide rift valleys, sometimes as big as 10-20 km wide and very rugged terrain at the ridge crest that can have relief of up to a thousand meters (3,128 feet)
  • Fast-Spreading Mid-Ocean Ridge - Woods Hole Oceanographic Institution
    Volcanic rock on the seafloor is mostly basalt A typical shape for lava to have at the mid-ocean ridge is like big, bulbous pillows That is why many of the lavas are called pillow basalts Axial Trough SA narrow (50-300 meter wide) cleft at the axis of a fast-spreading mid-ocean ridge like the East Pacific Rise at 9-10°N Latitude
  • Marie Tharp - Woods Hole Oceanographic Institution
    The extension of the valley into the narrow Gulf of Aden and landward into the Rift Valley of East Africa convinced Bruce in mid-1953 that the Mid-Atlantic Ridge was part of a gigantic 40,000-mile-long mid-oceanic ridge system that extended throughout all the world’s oceans





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