How are spreading centers created?

How are spreading centers created?

Plates that are not subducting are driven by gravity sliding off the elevated mid-ocean ridges a process called ridge push. At a spreading center, basaltic magma rises up the fractures and cools on the ocean floor to form new seabed. Hydrothermal vents are common at spreading centers.

What is a spreading center and how do volcanoes form there?

Spreading center volcanism occurs at the site of mid-oceanic ridges, where two plates diverge from one another. As the plates are pulled apart, hot asthenosphere rises upward to fill voids of the extended lithosphere.

What is a spreading center on land called?

The first sort of plate boundary is called a divergent boundary, or spreading center. At these boundaries, two plates move away from one another.

What type of plate boundary is a spreading center?

Divergent boundaries
Divergent boundaries occur along spreading centers where plates are moving apart and new crust is created by magma pushing up from the mantle.

How is magma produced along a spreading center?

As the magma flows out, it cools, hardening to form new crust. This fills in the gap created by the plates diverging. This sort of magma production is called spreading center volcanism. The increased water content lowers the melting point of the mantle rock in this wedge, causing it to melt into magma.

What types of volcanoes are formed at spreading centers?

Shield volcanoes are common at spreading centers or intraplate hot spots. The lava that creates shield volcanoes is fluid and flows easily and creates the shield shape. Shield volcanoes are built by many layers over time and the layers are usually of very similar composition.

What is spreading in geography?

Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth’s lithosphere—split apart from each other. As tectonic plates slowly move away from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense. …

What causes seafloor spreading?

Seafloor spreading creates new oceanic crust at a mid-ocean ridge. When this new material reaches the end of the plate and comes into contact with another plate, whether continental or not, a convergent or a transform boundary will occur.

What does the center of the slit in the seafloor spreading model represent what process occurs in this region?

The center slit represents a Mid-Ocean Ridge 2. The strips of paper represent oceanic crust or seafloor. Seafloor spreading is the creation of new seafloor or new oceanic crust 5. The earth does not get bigger.

What is the definition of a spreading center?

spreading center. noun Geology. a linear zone in the sea floor along which magma rises and from which adjacent crustal plates are moving apart.

Which is the best definition of a measure of spread?

Measures of Spread. Introduction. A measure of spread, sometimes also called a measure of dispersion, is used to describe the variability in a sample or population.

What kind of rocks are found at the spreading center?

At a spreading center, basaltic magma rises up the fractures and cools on the ocean floor to form new seabed. Hydrothermal vents are common at spreading centers. Older rocks will be found farther away from the spreading zone while younger rocks will be found nearer to the spreading zone.

Which is the best measure of spread and central tendency?

Quartiles and Interquartile Range. For this reason, quartiles are often reported along with the median as the best choice of measure of spread and central tendency, respectively, when dealing with skewed and/or data with outliers. A common way of expressing quartiles is as an interquartile range.