divergent++boundaries

= Divergent boundaries =
 * [|In plate tectonics, a divergent boundary is a linear feature that exists between two tectonic plates that are moving away from each other.]**



[|**Sea-floor spreading** is the process in which the ocean floor is extended when two plates move apart. As the plates move apart, the rocks break and form a crack between the plates.] media type="custom" key="11022532"

The sinking of the block forms a central valley called a rift. Magma (liquid rock) seeps upward to fill the cracks. In this way, new crust is formed along the boundary. Earthquakes occur along the faults, and volcanoes form where the magma reaches the surface.