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Why is oceanic plate denser than continental plate?
Oceanic plates are primarily made up of basaltic rock while continental plates are primarily made of granitic rock. Basalt is denser than granite which allows oceanic plates to subduct beneath continental plates.
Place where seafloor spreading occurs?
Seafloor spreading occurs at the boundary between two tectonic plates. As the plates divide, magma comes up through the crack and cools to form new sea floor. The farther away the floor is from the boundary, the older it is.
What are continental plates made of?
AnswerThe continental plates are made up of largely granitic rock, while the oceanic plates are largely basaltic rock. Certainly some other types of rock are included, but these are the largest contributors to the material or composition. A link is provided below for more information.
What does the collision of a continental plate and an oceanic plate produce?
when two plates collide they form trenches.
Name a plate that is entirely made of continental crust?
All major plates contain both continental and oceanic crust except for the Pacific and Nazca plates.
What is the zones places where the seafloor is forced under continents to drift?
These zones are known as subduction zones where tectonic plates collide, forcing one plate to be pushed beneath the other. This process leads to the formation of deep ocean trenches and can result in earthquakes, volcanic activity, and the creation of mountain ranges.
Where the seafloor is forced under continental plates?
the subduction zone
The collision of two tectonic plates produces a volcano what types of plates could be involved?
two seafloor plates and a seafloor plate and continental plate
What evntually happens to seafloor that is carried away from a mid-ocean ridge?
Seafloor continues to move away from the mid-ocean ridge and eventually comes into contact with another plate boundary. Ocean plates subduct underneath continental plates and are forced down into the lithosphere
Zones or places where the seafloor is forced under continental plates?
Subduction of oceanic plates under continental plates occurs at convergent plate boundaries, where the plates are moving toward each other. When an oceanic plate meets a continental plate, it is usually the one subducted, due to its greater density. The Pacific "Ring of Fire", particularly east to south east Asia and the west coast of South America, is the result of oceanic plate subduction, and hence there is a high number of earthquakes and volcanism in the area.
How deep trenches are formed?
Deep-ocean trenches are formed where seafloor tectonic plates subduct under continental plates.
What is the primary force that cause the seafloor to spread and continental to drift?
The primary force that causes the seafloor to spread and continents to drift is plate tectonics. This process is driven by the movement of molten rock in the Earth's mantle, which generates forces that push apart tectonic plates, leading to seafloor spreading and continental drift.
What do you call an oreanic plate being forced under continental plates?
subduction
In the process of sea-floor spreading what happens when magma rises to Earth's surface and solidifies?
Yes. Seafloor spreading is the term given to the creation of new seafloor at divergent boundaries. At a divergent boundary, two oceanic plates move apart, which obviously means that something must then surface to fill the void. This is where the magma rises from the Earth's interior and cools to become seafloor. On the other end, at convergent boundaries, the old seafloor is forced under the continental plates, where it is recycled back into the Earth's magma supply.
How does continental rock differ from seafloor rock?
Continental plates are massively granitic rock, oceanic plates massively basaltic rock, therefore continental rock is less dense than seafloor rock and has a different chemical and mineralogical composition.
What are the similarities between seafloor spreading and continental drift?
Seafloor spreading and continental drift are both processes associated with plate tectonics. They both involve the movement of Earth's lithospheric plates. Seafloor spreading is the process where new oceanic crust is formed at mid-ocean ridges, while continental drift is the theory that continents have moved and are still moving over Earth's surface.
How does seafloor spearing and continental drift link together?
Seafloor spreading and continental drift are linked through the theory of plate tectonics. Seafloor spreading occurs at mid-oceanic ridges, where new crust is formed and pushes apart the plates on either side. This process helps drive the movement of continents, as the newly formed crust pushes older crust away from the ridges and towards the continents, contributing to the overall process of continental drift.
