The tiny Juan de Fuca plate is largely responsible ... where the plates meet or divide. The movement of the plates creates three types of tectonic boundaries: convergent, where plates move into ...

In this type of fault, the block of rock above the fault plane, known as the hanging wall, moves downward relative to the block below, called the footwall. Normal faults are typically found at ...

Whatever drives the movement, plate tectonic activity takes place at four types of boundaries: divergent boundaries, where new crust is formed; convergent boundaries, where crust is consumed ...

Plate tectonic theory shows that the crust of the Earth is split into plates (pieces of the Earth’s crust). The movement of these tectonic plates leads to earthquakes and volcanoes forming.

When the plate sinks into the mantle it melts to form magma. The pressure of the magma builds up beneath the Earth's surface. The magma escapes through weaknesses in the rock and rises up through ...

The finding demonstrates that plate tectonic processes were operational ... They built on previous studies that dated the movement to around 3 billion years ago, employing structural geology ...