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2021-05-16

What are the fault mechanisms of earthquakes at the three types of plate boundaries?

What are the fault mechanisms of earthquakes at the three types of plate boundaries?

The constant bumping, grinding, and lateral movement along crustal boundaries can create sudden movements that result in earthquakes. Each of the three types of plate boundaries—convergent, divergent, and transform—has a distinctive pattern of earthquakes.

What are the 3 types of tectonic boundaries?

There are three main types of plate boundaries:

  • Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust.
  • Divergent boundaries – where two plates are moving apart.
  • Transform boundaries – where plates slide passed each other.

What type of tectonic plate boundary causes earthquakes?

At divergent plate boundaries, earthquakes tend to be weak and shallow. Transform plate boundaries, have shallow, but very powerful earthquakes. At convergent plate boundaries, where two continental plates collide earthquakes are deep and also very powerful.

What is the location where sinking of a plate occurs is called?

The location where sinking of a plate occurs is called a subduction zone.

Do volcanoes occur at transform boundaries?

Volcanoes do not typically occur at transform boundaries. One of the reasons for this is that there is little or no magma available at the plate boundary.

Why do transform plate boundaries not have volcanoes?

These “transform faults” actually stagger the axis of spreading, and are very common along all known zones of divergence. But, because there is no ripping apart or subduction taking place along a transform fault, there isn’t any magma formation to lead to volcanoes.

Where is seafloor created?

Oceanic plates are continuously forged at mid-ocean ridges, an undersea mountain chain created where the edges of two plates are separating.

Is seafloor destroyed?

The seafloor is destroyed at a COnvergent Boundary. You will find the oldest seafloor at a COnvergent Boundary. There will be a trench, not a ridge.

How are seabeds formed?

Land erosion sediments, brought mainly by rivers. Underwater volcanic ash spreading, especially from hydrothermal vents. Sea currents eroding the seabed itself. Marine life: corals, fish, algae, crabs, marine plants and other biologically created sediment.

What lives on the seabed?

These include animals such as sea cucumbers, sea stars, crustaceans and some worms. Other animals need to have something solid to attach themselves to the seafloor, such as sponges, hard and soft corals and some anemones.