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Granitic crust does not form at the mid-oceanic ridge. Rather another type of igneous rock Basalt is formed at the Mid-Oceanic ridge. Both are silicate rocks and have a high oxygen and silica content. The difference is that Granite is formed intrusively, that is within the Earth's crust. Basalt is extrusive, that is it is formed above the Earth's surface, such as at the bottom of the ocean at the Mid-Oceanic ridge.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoNo because the granitic crust forms a GC not at the mid oceanic ridge.
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Where did the crust from the earth come from?
The Earth some times oceanic crust is formed by the process of mid oceanic ridges. this process occurs when magma comes from the mantle and cool below oceanic body & form new crust.
What is likely to form where oceanic crust is subducted under continental crust?
because oshieotic crust is under Mantle is thicker
How do divergent boundaries of oceanic crust form islands?
Collisions of plates
At what depth does granitic magma form?
Granitic magma forms at relatively shallow depths, typically between 1 and 10 kilometers beneath the Earth's surface. This type of magma is formed through the partial melting of continental crust, which is composed mainly of granitic rocks.
Do hot spots only form in oceanic crust?
no they also occur up your mom
What caused the first land masses to form on earth?
Granitic crust, a.k.a continental crust, began to form, which happened to be less dense than oceanic crust. Therefore, the continental crust went on top of the oceanic, thus creating the first land mass on Earth.
What are rocks that form Earth's crust?
The rocks of the crust are igneous, sedimentary, and metamorphic in origin. The base rock of the oceanic crust are mainly basaltic and the base rock of the continental crust is mainly granitic.
Describe how molten rock can form new oceanic crust?
Some of the molten rock overflows onto the ocean floor in tremendous eruptions. material from the mantle canwell up, forming a ridge and new oceanic crust.
Is new oceanic crust formed at a mid-ocean ridge?
The answer to that question is the following:=Magma rises toward the surface and solidifies=
How is crust destoyed?
Old crust can be destroyed bysubduction, or the pushing down of an oceanic plate below anoverriding plate at a convergent boundary. The initial phase of adivergent boundary is a rift valley, which progresses to form anoceanic basin with a mid-oceanic ridge.
The youngest rocks on the ocean floor are located?
The youngest part of the ocean floor is found at conservative plate boundaries where oceanic crust is pulled apart and magma rises from the mantle to form new oceanic crust.
How does a deep-ocean trench form?
They form when the oceanic crust goes under the Continental crust. The oceanic crust then forms the trenches through a process called subduction.
Why is a high temperature require to form magma at the oceanic ridges than in the continental crust?
Because the oceanic ridge consists of very dense rocks having high specific gravity and with high melting point.
What types of rock make up the platform on which the rest of Canada is built?
The continental crust/plate/platform is the layer of granitic, sedimentary, and metamorphic rocks which form the continents and the areas of shallow seabed close to their shores, known as continental shelves. This layer is sometimes called Sial due to its granitic rock, in contrast to the oceanic crust, called Sima due to its basaltic (also called mafic) rock
How does a trench forms?
They form when the oceanic crust goes under the Continental crust. The oceanic crust then forms the trenches through a process called subduction.
How does trench formed?
They form when the oceanic crust goes under the Continental crust. The oceanic crust then forms the trenches through a process called subduction.
What happens to two oceanic crust when they collide?
the older crust is subducted and later pushed up to form oceanic arcs
