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What is the difference in spreading center earthquakes and subduction zone?
Wiki User
∙ 9y ago
- Spreading center earthquakes are always shallow, subduction zone earthquakes can be very deep.
- Spreading center earthquakes are typically of lower magnitude than subduction zone earthquakes.
Wiki User
∙ 9y ago
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How do the differences in density and temperature provide some of the force needed to cause seafloor spreading and subduction?
Temperature differences in the mantle cause convection currents. These currents cause molten rock to erupt through the valley that runs along the center of the midocean ridge. As more material erupts, the sea floor spreads, cools, and becomes denser. The denser material sinks back into the mantle when it reaches a trench.
What types of volcanoes are formed at spreading centers?
Volcanoes at spreading centers is referred to as spreading center volcanism. This usually takes place on mid-oceanic ridges where the plates diverge.
Why the focus of earthquakes can be very deep subduction boundaries?
Subducted crust is brought to the point of melting as it enters the mantle. As a liquid highly entrained with gas, it will attempt to rise through any weak points in the crust. When it reaches the surface, it will form a volcano.
What are the folk beliefs of earthquake?
Folk beliefs regarding earthquakes center around the fact that anything that destroys is brought about by the devil. Since earthquakes cause such destruction, the folk belief is that they were evil.
What features caused by seafloor spreading?
There is a mid ocean ridge that forms because the hot magma is lighter (less dense than the colder magma. The ridge is located at the spreading center. There are magnetic anomalies that can be thought of as stripes that mirror each other on either side of the spreading center. There are remnants of the pipes that form from upwelling hot springs (black smokers). There are pillow basalts that form from sudden cooling as it encounters sea water. It is generally rugged and rocky near the spreading center but tends to be more covered with sediments as you move away from it.
What is the difference between a mid oceanic ridge and a subduction zone?
A subduction zone occurs at convergent plate margins where an oceanic plate is going underneath a continental plate or a less dense oceanic plate. A mid-ocean ridge is a divergent plate boundary on the ocean floor with a mountain range and a rift running through the center of it. Sea floor spreading also occurs at mid ocean ridges.
What is a spreading center on the ocean floor?
sea floor-spreading..;)
When new crust is made what happens to the old crust?
When new crust is made, like at a spreading center, old crust must be destroyed, like at a subduction zone, where it is brought back into the inner earth and melted and recycled through.
Name one spreading center?
The Mid-Atlantic Ridge is a spreading center located in the middle of the Atlantic Ocean.
What do you call the origin or the center of the earthquakes?
Epicentre
Why are there fewer earthquakes in the center of the US than on the west coast?
Because the water attracts earthquakes
What a spreading center and what is made at one?
Sea floor spreading 2 oceanic plates coming apart
What is another name for spreading center?
divergent plate boundary
Why does a shallow hypo center generate stronger earthquakes than an deep hypo center?
I know
How do the differences in density and temperature provide some of the force needed to cause seafloor spreading and subduction?
Temperature differences in the mantle cause convection currents. These currents cause molten rock to erupt through the valley that runs along the center of the midocean ridge. As more material erupts, the sea floor spreads, cools, and becomes denser. The denser material sinks back into the mantle when it reaches a trench.
Are most earthquakes located near the edges or near the center of the continents?
Most earthquakes and volcanoes are on the Pacific rim of fire.
What types of volcanoes are formed at spreading centers?
Volcanoes at spreading centers is referred to as spreading center volcanism. This usually takes place on mid-oceanic ridges where the plates diverge.
