GEOLOGY

Detailed explanation-1: -Many rift valleys are part of “triple junctions, ” a type of divergent boundary where three tectonic plates meet at about 120° angles. Two arms of the triple junction can split to form an entire ocean.

Detailed explanation-2: -A divergent plate boundary often forms a mountain chain known as a ridge. This feature forms as magma escapes into the space between the spreading tectonic plates.

Detailed explanation-3: -Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges.

Detailed explanation-4: -A divergent boundary may form beneath the continental lithosphere, where mantle convection cells cause the plates to push apart and form a Rift Valley.

Detailed explanation-5: -At divergent boundaries, sometimes called constructive boundaries, lithospheric plates move away from each other. There are two types of divergent boundaries, categorized by where they occur: continental rift zones and mid-ocean ridges. Continental rift zones occur in weak spots in the continental lithospheric plate.