GEOLOGY

Detailed explanation-1: -There are three main types: Convergent boundaries, where plates move towards each other. Divergent boundaries, where plates move apart. Transform boundaries, where plates slide alongside each other.

Detailed explanation-2: -A subduction zone is a region in which a portion of a tectonic plate sinks beneath another plate into the Earth’s interior. Subduction zones are defined by deep oceanic trenches, lines of volcanoes parallel to the trenches, and zones of large earthquakes that extend from the trenches landward.

Detailed explanation-3: -The Cascadia Subduction Zone and Southern Alaska are the sites of ongoing subduction as the Pacific and Juan de Fuca plates slide beneath the North American Plate.

Detailed explanation-4: -Subduction zones are plate tectonic boundaries where two plates converge, and one plate is thrust beneath the other. This process results in geohazards, such as earthquakes and volcanoes.