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This depends at what point on Earth's surface you are interested in!
For example the Mid Atlantic Ridge separating the North American and Eurasian plates is classified as a "slow" spreading centre with a spreading rate of around 25mm/yr (slow spreading centres generally have a rate of between 20-55 mm per year). This means that the North American plate is moving roughly to the west at a rate of 12.5 mm/yr.
However a number of the spreading centres in the Pacific are considered to be "medium to fast" spreading centres with rates of between 80-120 mm/yr.
Another example is the Indian plate which is moving north-east at a rate of approximately 50mm/yr causing it to collide with the more slowly moving Eurasian plate. This event started (and is continuing to cause) the Himalayan orogeny.
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What describes the movement of crust in a normal fault?
vertical direction
What are the effect of folding on crust of earth?
in may affect the internal energy of the earth,also shaking of the earth's crust (earth quake) due to the movement of molten materials in interior of the crust
What is a sudden strong movement of Earth's crust?
An earthquake
What geologic feature is a fracture in earth's crust?
A place where two tectonic plates meet is a fracture in the Earth.
How can the ocean crust be different ages?
On geologic time scales, new oceanic crust is constantly being formed ad mid-ocean ridges while older crust is destroyed at subduction zones. The crust forms at the ridge and is carried away by the movement of the plate as new crust forms to take its place. The oceanic crust is youngest new a mid ocean ridge and oldest far away from it.
When does earth crust move?
The tectonic plates of Earth's crust are always moving, but the movement is far too slow to be perceived without sensitive measuring equipment. For example, the northward movement of India at the rate of two inches per year is considered fast. Usually the only times we perceive the movement of Earth's crust are when part of a tectonic plate gets stuck, and the movement of the rest of the plate causes potential energy to build up in the stuck part until it has enough energy to free itself and catch up with the rest of the plate. That is how most earthquakes happen.
What do you call the sudden movement of the Earth's crust?
The sudden movement of the earth's crust is called and earthquake
Which movement of the Earths crust implies that the continental crust is less dense than the oceanic crust?
Plate tectonic movement and subduction zones.
What are plate movement?
the movement of earths plates or crust
The movement of magma through the Earth's crust is known as?
The movement of magma through the Earth's crust is known as intrusion.
What is the violent movement of the earth's crust?
earthquake/fissure
How does the movement of the crust along a thrust fault differ from that along the normal fault?
The movement of the crust along a thrust fault is usually a reverse movement unlike the movement along a normal fault.
How does the movement of the crust along a thrust fault differ from that along a normal fault?
The movement of the crust along a thrust fault is usually a reverse movement unlike the movement along a normal fault.
How fast does the plates move per year in the response to the movement in the earths mantle?
a few cent. per year...
What is the four factors that effect plate movement?
The four factors that effect plate movement are when new crust is created, crust being destroyed, the crust sliding horizontally or when plates merge together.
What is a sudden movement in the Earth's crust?
earthquakes
What is the difference between continential and oceanic crust?
oceanic crust is much more dense than continental crust. Oceanic crust is also responsible for the movement of continental crust.
