Where is plate material recycled?


Can plate material be destroyed?

The third type of plate boundary is called a conservative or transform boundary. It is called conservative because plate material is neither created nor destroyed at these boundaries, but rather plates slide past each other.

Where in a convergent boundary does rock recycling occur?

Such destruction (recycling) of crust takes place along convergent boundaries where plates are moving toward each other, and sometimes one plate sinks (is subducted) under another. The location where sinking of a plate occurs is called a subduction zone.

Why is recycling an excellent description of plate tectonics?

The earth recycles lithosphere (crust) just like we recycle plastics, metal, etc. Crust is created at divergent boundaries, and destroyed at convergent subduction boundaries. Then the process repeats. This process takes MILLIONS of years.

Is continental crust recycled?

Although there is evidence that continental crust was formed prior to 3.8 Ga, the oldest preserved rocks do not exceed this age. … Although crust-mantle recycling is seen as a viable process, it is concluded that crustal growth has exceeded crust-mantle recycling since at least 3.8 Ga.

How is New plate material formed?

Subduction zones form where two plates converge and one begins sliding under the other. As old lithosphere is recycled back into the mantle at subduction zones and new lithosphere is formed at spreading centers, the balance of lithosphere on Earth remains relatively constant.

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Where would you find tectonic plates?

Plate tectonics is the theory that Earth’s outer shell is divided into large slabs of solid rock, called “plates,” that glide over Earth’s mantle, the rocky inner layer above Earth’s core. Earth’s solid outer layer, which includes the crust and the uppermost mantle, is called the lithosphere.