Tectonic plates are massive slabs of Earth's lithosphere that float atop the semi-fluid mantle, constantly shifting and ...

Divergent Boundary Also known as spreading boundary, a divergent boundary occurs where two plates move apart, allowing magma, or molten rock, to rise from the Earth's interior to fill in the gap.

At divergent boundaries in the oceans, magma from deep in the Earth's mantle rises toward the surface and pushes apart two or more plates. Mountains and volcanoes rise along the seam.

Extension deficit builds up over centuries at divergent plate boundaries and is recurrently removed during rifting events, accompanied by magma intrusions and transient metre-scale deformation.

NORFOLK, Va. — Fault lines are fractures or breaks in the Earth's crust where tectonic plates move past each other, often resulting in earthquakes. These geological features are classified into ...

The boundary where the two plates meet is called a convergent boundary. ... Most of the subducting plate continues into the mantle, perhaps to reappear much later at a distant divergent boundary.