Plate Tectonics

Are mountains formed in part by igneous activity associated with subduction of oceanic lithosphere beneath a continent.

A boundary in which two plates move toward each other, causing one of the slabs of the lithosphere to subduct beneath an overriding plates.

a region where the crustal plates moving apart.

vibration of earth due to the rapid release of energy

a break in a rock along which movement has occurred

a depression in the seafloor produced by subduction process

a concentration of heat in the mantle capable of creating a magma

is the theory which suggests that Earths crust is made up of plates that interact in various ways, thus producing earthquakes, mountains, volcanoes and other geologic features.

rigid sections of the lithosphere that move as a unit

a boundary produced when two plates slide past each other.

a continuous mass of land with log width and height on the ocean floor

the thick part of the earth's crust not located under the ocean

the thin part of the earth's crust located under the ocean

any break in the rock in which no significant movement has taken place

a mass of molten rock formed at depth, including dissolved gases and crystals