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What else can I help you with?
Does earth's crust have the same density?
No, the density of Earth's crust varies depending on the type of rock and location. Generally, continental crust is less dense than oceanic crust. Continental crust is composed mostly of granite and has an average density of about 2.7 g/cm^3, while oceanic crust, which is mainly basalt, has an average density of about 3.0 g/cm^3.
Do subduction take place when two oceanic crust meet?
No subduction doesn't take place when two oceanic crust meet. When two oceanic crusts meet, it is called a divergent boundary. Crustal features vary such as one like mid-ocean rdges. Subducting takes place when an OCEANIC and CONTINENTAL plate meet not when two oceanic plates meet.
How can oceanic sediments become part of continental mountains?
im not one-hundred percent sure but i would think that its a recycling process that takes 1000's perhaps 100's of 1000's to millions of years to take place and also varying by the density of the material
What is the difference between divergent plate boundaries and convergent plate boundaries?
Okay this is going to be long :X IN GENERAL... Divergent Plate Movement (plates move away from each other)- Continental and continental, oceanic and oceanic -Constructive Plate Boundary Convergent Plate Movement (plates move towards each other)- Continental and Oceanic, Oceanic and Oceanic, Continental and Continental -Destructive Plate Boundary Transform Plate Movement (plates sliding past each other)- Continental and Continental -Conservative Plate Boundary DIVERGENT PLATE MOVEMENT When plates move apart, magma wells up from Earth's mantle to form a new ocean floor with mid-oceanic ridges. It is a constructive plate boundary because new land crust is being created. O & O (Oceanic and Oceanic) Oceanic Ridges and Submarine volcanoes are formed. Shallow earthquakes may occur and there may be volcanic activity. Magma from the deeper mantle wells up into the gap formed when two oceanic plates move away from each other, and some of it melts and is erupted on the surface as lava, while others are injected near the surface to crystallize as other igneous rocks. The seafloor may also spread, and magma rises to the floor and solidify, forming new crust. Therefore it is a constructive plate boundary as new crust is formed and added to the ocean floor. An example of the resulting landforms would be the Mid-Atlantic Ridge. C & C (Continental and Continental) When two continental plates move away from each other, a sea is formed. E.g. Red Sea. CONVERGENT PLATE MOVEMENT When plates move towards each other, they may collide. When 2 oceanic plates collide, plate edges are bent into a deep trench called the subduction zone. It is a destructive plate boundary because the subducted plate is destroyed in the process. O & O Subduction takes place, and the over-riding plate (the plate above) folds and form islands, whilst the heavier plate sinks into the mantle of the Earth and is melted away by the magma. The magma rises and forms volcanoes. E.g. Japan. C & O When an oceanic plate collide with a continental plate, the oceanic plate sinks as it has a larger density. Lithosphere materials from the oceanic crust are subducted in the trench whilst the continental border is fractured, folded and uplifted. Magma rises and a mountain accompanied by volcanic activity are formed. E.g. Andes Mountains. C & C When two continental plates collide, neither sinks because they have similar densities. The continental lithosphere buckles and is uplifted instead, forming fold mountains. Little volcanic activity occur as rocks from the lithosphere do not sink deep into the asthenosphere (upper mantle zone) Earthquakes, faulting and folding however, are common. E.g. Himalayas. TRANSFORM PLATE MOVEMENT Occurs when two plates slip past each other. Tear faults form, accompanied by earthquakes due to great amount of stress built up in these areas, but there is little volcanic activity and little crustal material is destroyed.
Where does recycling lithosphere take place?
Recycling of lithosphere primarily takes place at convergent plate boundaries, where oceanic lithosphere is subducted beneath continental lithosphere and melted back into the mantle. This process helps regulate the movement of tectonic plates and influences the formation of volcanic arcs and mountain ranges.
Why did the oceanic place slip under the continental plate?
The oceanic plate slips under the continental plate in a process called subduction due to differences in density, where the denser oceanic plate sinks below the less dense continental plate. This is part of plate tectonics and occurs at convergent boundaries where two tectonic plates collide. Subduction zones are characterized by volcanic activity and earthquakes.
Why oceanic crust younger than the continental crust?
Oceanic crust is constantly created and recycled due to place tectonics. Oceanic crust is created by spreading ridges in the ocean floor and the oceanic plates subside under continental plates thus forcing it back down into the magma as the plate grows. Searching Oceanic Plate Tectonics on google will provide images that made this easier to understand.
Where does subdution occur?
Subduction (I believe that's what you meant) occurs at CONVERGENT boundaries, where two plates collide and the less dense one remains and the denser one sinks. An example of subduction is two oceanic plates colliding. Oceanic plates contain mainly basalt, which is dense. The oceanic plate closer to a heat source (hot spot, volcano) would remain in place while the denser plate sinks (cold water is denser than hot water so it sinks) below the other. When an oceanic plate and a continental plate collide, the oceanic plate sinks because granite (what continental plates are composed of mainly) is less dense than basalt, therefore the oceanic plate would sink. However, when two continental plates collide, because both plates are made of granite and are not very dense, they push and shape the land into mountains.
What are convertgent boundaries?
A conversion boundary is a place where 2 tectonic plates are mving toward each other. There are 3 types of convergent boundaries OCEANIC CRUST-OCEANIC CRUST OCEANIC CRUST-CONTINENTAL CRUST CONTINENTAL CRUST-CONTINENTAL CRUST They are classified according to their crust
What is the landform type where divergent boundaries take place?
Oceanic or continental rifts.
What is the place where the oceanic crust is forced under the continental crust?
This is called a subduction zone.
Do the continental plates remain in one place?
No, both the continental and oceanic plates are always moving. Moving slowly, but always moving.
Can continental lithosphere subduct?
Not usually, as the rock they are made of (mostly granite) is too light to sink into the mantle (mostly denser basalt). Small fragments of continental crust can get entrained in a subducting oceanic plate and be dragged down into the mantle as that plate subducts. Where continental crust collides with oceanic crust, it always floats forcing the oceanic crust down and causing it to subduct. Where continental crust collides with continental crust, both plates crumple and compress dramatically, being forced upward into unusually high mountains (e.g. the Himalayas) and downward into deep continental roots that support the weight of those mountains. Nothing subducts in this case. But whole continental plates subducting does not happen, while much more oceanic plate area has been subducted in the history of the earth than the total surface area of the earth.
Why volcano is a geomorphic process?
it moves crustal materials from place to place
Crust is destroyed near?
Crust is destroyed at the convergent plate boundaries in Earth. In between the oceanic and continental plates, the subduction of the denser oceanic crust takes place.
What is a place where subduction occurs?
Where two plates collide
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.
