Volcanic eruptions are one process that adds new material to crust. Lava from the volcanoes eventually cool, forming new land. Sea floor spreading also adds new material to the crust.
sea floor spreading
Sea floor spreading mean the process by which molten material adds new oceanic crust to the ocean floor
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sea-floor spreading
Mid-ocean ridge spreading adds more crust to the ocean floor compared to subduction zones. At mid-ocean ridges, new crust is constantly created as magma rises and solidifies at the spreading center, pushing the older crust outward. Subduction zones involve the destruction of oceanic crust as it is pulled beneath a tectonic plate.
Sedimentation.
sea floor spreading
the formation of new oceanic crust. Magma rises to the surface at mid-ocean ridges, solidifies upon contact with seawater, and creates new crust as it spreads horizontally away from the ridge axis. This process continually adds new crust to the ocean floor as tectonic plates move apart.
New crust is formed at mid-ocean ridges through a process called seafloor spreading. Magma rises to the surface, cools, and solidifies, creating new oceanic crust. This process continually adds new material to the ocean floor, expanding the Earth's crust.
sedimentation
Sea-floor Spreading through a mid ocean ridge.
The mechanism responsible for producing new oceanic crust between two diverging plates is seafloor spreading. Magma rises up from the mantle at mid-ocean ridges, solidifies upon reaching the seafloor, and forms new crust. As the plates move apart, this process continuously adds new material to the ocean floor.