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As the sea floor spreads, magma rises from the mantle at mid-ocean ridges, cools, and solidifies to form new oceanic crust. This process pushes older rock away from the ridge, causing the sea floor to gradually expand. Additionally, the newly formed rock undergoes various geological processes, such as aging, erosion, and sedimentation, as it moves further from the ridge. Over time, this contributes to the dynamic nature of the Earth's lithosphere.
What else can I help you with?
What are the steps in the sea floor spreading?
In sea-floor spreading,the sea floor spreads apart along both sides of the mid-ocean ridge as a new crust is added.As a result,the ocean floors move like conveyor belts,carrying the continents along with them.
How does a magnetic record is created as the sea floor spreads?
As the sea floor spreads, magma rises from the Earth's mantle at mid-ocean ridges, creating new oceanic crust. This molten rock contains iron-rich minerals that align with the Earth's magnetic field as it cools and solidifies. When the magma solidifies, it records the direction and intensity of the magnetic field at that time, creating a magnetic signature. Over time, as the sea floor continues to spread, these signatures form symmetrical patterns of magnetic stripes on either side of the ridge, providing evidence of plate tectonics and Earth's magnetic reversals.
Rock on the ocean floor provided the final proof of sea -floor spreading with a record of?
Pangaea probably?
Why are the Rock's close to a mid-ocean ridge younger than the ones that are farther away?
Mid-ocean ridges are basically underground volcanoes that lava from the Earth's Mantle can breach. The ocean, however, freezes the lava and that in turn forms rock. If this happens repeatedly, then the older rock gets pushed away from the source, and the younger, just formed rock is, therefore, closer to the ridge. So the younger rock being formed by the ridge is pushing away the older, previously made, igneous rock.
What rock makes the sea floor?
The Clastic sedimentary rock is a rock made out of rock particles so if these rock particles float to the bottom of water such as an ocean or lake and will settle there. Hope this answered your question!! xD
What happens to the old ocean floor as the sea floor spreads?
As the sea floor spreads, the old ocean floor gets pushed out, which makes the plates move.
What happens to a coral reef if the sea level rises or if the sea floor spreads?
It continues to grow upward
What is the theory that occurs when magma is pushed upward and flows through the openings in the ocean floor?
this usually happens when the sea floor spreads open.
What is it called when the sea floor spreads out from both sides of a mid ocean ridge and moves towards continents?
sea floor spreading or divergent boudary
Is mid-ocean ridge is how the direction of sea-floor spreading?
It spreads away form the ridges
As the ocean floor spreads other parts plunge into the mantle--this process is called?
The first process is called sea-floor spreading (rifting when it happens on land) and the second process is called subduction. Both processes are part of plate tectonics.
What forces sea floor spreading?
Sea floor spreading is caused by convection currents in the mantle to cause a divergent boundary underwater. When the divergent boundary spreads, it caues a mid-ocean ridge. This is sea-floor spreading. Hope I helped!
How does sea floor spreading make the continents move?
Under the oceanic crust is the layer of the earth called the mantle. This layer is moving rock that is very, very hot! As the hot material in the mantle pushes up through the crust in the sea floor, it cools and becomes new crust as it pushes out (spreads) the sea floor. This movement in the plates causes other plates (continental and oceanic) to move as well. This is how sea floor spreading causes continents to move.
What happens at the ridges?
Sea floor spreading
Where does new rock form on the floor?
Forms by lava from volcanoes on the sea floor
What are the steps in the sea floor spreading?
In sea-floor spreading,the sea floor spreads apart along both sides of the mid-ocean ridge as a new crust is added.As a result,the ocean floors move like conveyor belts,carrying the continents along with them.
What are steps in the process sea floor spreading?
In sea-floor spreading,the sea floor spreads apart along both sides of the mid-ocean ridge as a new crust is added.As a result,the ocean floors move like conveyor belts,carrying the continents along with them.
