oceanic ridge


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Related to oceanic ridge: rift valley, Oceanic plate

oceanic ridge

n
(Geological Science) any section of the narrow, largely continuous range of submarine mountains that extends into all the major oceans and at which new oceanic lithosphere is created by the rise of magma from the earth's interior. See also seafloor spreading
References in periodicals archive ?
Normal mid oceanic ridge basalts (NMORB)-normalized plots of dolerites, olivine dolerites and lamprophyres show higher enrichments of large ion lithophile elements (LILEs) relative to high field strength elements (HFSEs) and marked positive anomalies on Nb which confirm their origins from an enriched mantle source.
Vine, F.J., and Wilson, J.T., 1965, Magnetic anomalies over a young oceanic ridge off Vancouver Island: Science, v.
2007), the most studied ridge system over the longest period of time is the north-south oceanic ridge in the East Pacific.
The Argentine Precordillera broke off from Laurentia when an oceanic ridge to the east of the strip shifted westward, the researchers report.
A controversy among Church (1977, 1978), Laurent (1978), and Oshin and Crocket (1986) concerning the geodynamic significance of the Thetford Mines ophiolites mirrored the debate in the international community concerning the oceanic ridge versus arc settings of ophiolites.
Though there are 6 continents Eurasia, Africa, Australia, Antarctica, North America and South America, their margins are marked by either deep fractures ending with edges of mid oceanic ridges or active subduction zones comprised of shallow fractures.
The relative motions between adjacent plates give rise to earthquakes along the plate boundaries that include spreading oceanic ridges, converging subduction zones, collisional continental plate boundaries, and transform faults along which they shear past each other (Bird, 2003; Turcotte and Schubert, 2002; Cediel et al.,2003).
These mineral resources are rich in copper, iron, zinc, silver, gold and cobalt, with the sulphides being found around volcanic areas and the crusts on oceanic ridges. But because the sites are often in international waters, ISA has been trying in vain for some years now to agree what would be highly detailed and technical regulations.
Tectonically the rocks are plotted in the zone of island arc basalts or boundary between island arc and mid oceanic ridges basalts.
These mineral resources are rich in copper, iron, zinc, silver, gold and cobalt, with the sulphides being found around volcanic areas and the crusts on oceanic ridges. Because these sites are often in international waters, the authority has been trying to agree complex regulations covering legal, business and environmental rights and duties regarding their mining and dredging.
These mineral resources are rich in copper, iron, zinc, silver, gold and cobalt; sulphides are found around volcanic areas and crusts on oceanic ridges. Because these sites are often in international waters, the authority wants to agree complex regulations covering legal, business and environmental rights and duties regarding their mining and dredging.