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Listing 1 - 4 from 4 for oceanic crust

Pennsylvanian Period
... America were in collision, forming volcanic mountain ranges along their margins as oceanic crust was subducted under the relatively lighter continental crust. This process goes on today around the perimeter of the Pacific ...
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Moving Continents: Images of Continental Drift
... 's outer crust: 1)_oceanic crust (heavy, basaltic rock) and 2)_continental crust (light, granitic rock). Oceanic crust is being continuously created through the process of seafloor spreading, and continuously consumed through subduction. Because of this continuous recycling, no oceanic crust ...
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Subduction -- the birth place of a volcanic mountain range
... outer surface that we see. There are two types of crust: 1)_oceanic crust (dark, heavy basaltic rock) 2)_continental crust (relatively lighter-colored and lighter-weight granitic rock). Broken ... one of two ways: When oceanic crust collides with continental crust, continental crust being less dense will usually ride up over the oceanic crust. As a result oceanic crust and the upper mantle lithosphere ...
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Mountains formed by plate convergence
... oceanic crust and continental crust. Oceanic crust is created by volcanic activity along certain tectonic plate boundaries, and is consumed and recycled along others. Oceanic crust is recycled at subduction zones where one leading edge of convergent lithospheric plates is subducted beneath the other and remelted. Continental crust is composed of material less dense than oceanic crust ...
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