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New oceanic crust is formed when volcanic activity disrupts the seafloor at the mid- ocean ridge. When this occurs it is referred to as oceanic spreading.
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Places where new seafloor is being created?
New seafloor is created at mid-ocean ridges, where tectonic plates are moving apart. As the plates separate, magma from the mantle rises to the surface, solidifies, and forms new crust. This process is known as seafloor spreading.
Used as evidence for sea-floor spreading?
Magnetic striping on the ocean floor is used as evidence for seafloor spreading. As new oceanic crust forms at mid-ocean ridges, Earth's magnetic field is recorded in the rocks in alternating patterns of normal and reversed polarity. This provides support for the idea that new crust is continuously being created at mid-ocean ridges and spreading away in opposite directions.
How are earthquake patterns used to provide evidence of sea floor spreading?
Earthquake patterns, including their depth and distribution, can provide evidence of sea floor spreading by showing a concentration of earthquakes along mid-ocean ridges where new oceanic crust is being formed. As tectonic plates diverge and new crust is created, stress builds up and is released through earthquakes. The pattern of earthquakes along mid-ocean ridges provides a visual representation of the tectonic activity associated with sea floor spreading.
What formation is created in the rift of a spreading sea floor?
A mid-ocean ridge is created in the rift of a spreading sea floor. It is a continuous underwater mountain range formed by the separation of tectonic plates. Magma rises to the surface, creating new crust which pushes the existing plates apart.
True or false magnetic stripes on the ocean floor are places where oceanic crust sinks back to the mantle?
True. Magnetic stripes on the ocean floor are created by alternating bands of magnetic polarities in the oceanic crust. These stripes are evidence of seafloor spreading where new crust is formed at mid-ocean ridges, pushing older crust away. Subduction zones are where older crust sinks back into the mantle.
Where are places where new sea floor is being created?
antartica
Place where new seefloor is being created?
New sea floor is being created at mid oceanic ridges.
Where is new sea floor being created?
At Mid-Ocean Ridges.
What is created at the bottom of the ocean because of sea floor speading?
Mid-oceanic ridges are created where sea floor spreading takes place. These are called divergent boundaries and mark places where new sea floor is being created. They are tectonically active regions and can be characterized by undersea vents where magma comes up and cools quickly because of its contact with very cold water.
What cause a new sea floor to be created and how is it created?
Sea floor spreading causes this. As the floor spreads apart new magma is being pushed up through the ridge from the mantle through convection currents. It's like a recycling system.
Does sea-floor spreading increase the diameter of the earth?
No. While new sea floor is being made in one place, at other places it is being destroyed, the diameter of the earth therefore remains constant overall.
When lava flows from fissures on the ocean floor at places where tension is causing the ocean floor to be pulled apart new is?
Ocean floor
Where is new sea floor created?
the ridges
What is happening to the land at the mid-ocean ridge?
New ocean floor is being created, pushing the Americas away from Europe and Africa.
When lava flows from fissure son the ocean floor at places where tension is causing the ocean floor to be pulled apart new?
new land is formed
What is being contrasted in viva New Jersey?
the places she lives in
What is the process in which new sea floor forms as older sea floor is pulled apart?
Seafloor Spreading created by harry hess
