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The magma spills over the ridge and pushes the old sea floor away toward a subduction zone where the old sea floor melts.
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What erupts through the valley of the mid ocean rig?
Magma erupts along mid ocean ridges forming new ocean floor. Mid ocean ridges are found at divergent boundaries where two ocean plates are pushing apart.
What is an ocean thermal vent?
It is a place where volcanism or hot water heated by the underlying magma erupts on the ocean floor.
What happens when tsunami erupts?
Nothing . . . tsunamis are ocean waves, not volcanoes.
What happens to magma after it erupts onto the ocean floor?
The magma spills over the ridge and pushes the old sea floor away toward a subduction zone where the old sea floor melts.
In sea floor spreading molten material rises from the mantle and erupts along what?
In sea floor spreading, molten material rises from the mantle and erupts along mid-ocean ridges. These underwater mountain ranges serve as the sites where tectonic plates diverge, allowing magma to flow up and solidify, creating new oceanic crust. As this process continues, it pushes older crust away from the ridge, gradually expanding the ocean floor.
Where do rocks from the mid-ocean ridges come from?
Rocks from mid-ocean ridges originate from the Earth's mantle, where molten rock, or magma, rises to the surface along tectonic plate boundaries. As tectonic plates diverge, this magma erupts and solidifies, forming new oceanic crust. The ongoing process of seafloor spreading continuously adds new material to the ocean floor, resulting in the creation of basaltic rocks characteristic of mid-ocean ridges.
Why does so much basaltic magma erupt along mid-ocean ridges?
Basaltic magma erupts along mid-ocean ridges primarily due to tectonic plate divergence, which creates space for magma to rise from the mantle. As the plates pull apart, the pressure decreases, allowing the mantle rock to partially melt and form basaltic magma. The relatively low viscosity of basaltic magma facilitates its ascent, leading to frequent eruptions and the formation of new oceanic crust at these ridges. Additionally, the continuous supply of heat from the mantle ensures ongoing volcanic activity in these regions.
When plates beneath the ocean move apart from one another what happens to the magma below?
Magma is extruded as lava at the mid-ocean ridges when they are pulled apart.
What happens at a ridge?
magma comes through the ocean surface and makes volcanoes
What happens when th ocean crust melts in the mantle?
it makes more magma.
Which type of magma is produced at the Coolest temperature?
Basaltic magma is produced at the coolest temperatures because it has a lower silica content and therefore has a lower melting point compared to other types of magma. This type of magma typically erupts quietly and forms basaltic rock, such as the kind found at mid-ocean ridges.
What happens when new basalt forms along mid ocean ridges?
Magma that has bubbled up through the crack in the Earth's surface.
