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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.
Im the place where older crust is destroyed because two plates converge or push together?
You are describing a subduction zone, where one tectonic plate moves beneath another due to convergence, resulting in the destruction of the older crust through melting and recycling in the Earth's mantle. This process often leads to the formation of volcanoes and deep ocean trenches.
What is the process where new oceanic lithosphere formed?
New oceanic crust is created at the mid-ocean ridges where rift volcanoes feed solidifying magma from the asthenosphere to both sides of the divergent plate boundaries. The mid-ocean ridge marks the line where heat from the Earth's interior is being carried to the surface by convection currents in the mantle. At the opposite end of the convection currents, colder, denser, and older oceanic crust is being drawn down into the asthenosphere, the birth to death of oceanic crust occurring in roughly 150 million year cycles.
What is true of the earth's crust?
The Earth's crust is the outermost layer of the Earth, composed of solid rock that includes both continental and oceanic crust. It is thinnest under the oceans and thickest under mountain ranges. The crust is divided into several tectonic plates that float on the semi-fluid mantle below, causing movements such as earthquakes and volcanic activity.
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 the place where the oceanic crust is forced under the continental crust?
This is called a subduction zone.
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
Where did project mohole take place?
Project Mohole took place in the deep ocean offshore of Guadalupe Island, about 200 miles off the coast of Baja California, Mexico. The aim of the project was to drill through the Earth's crust to reach the mantle beneath the oceanic crust.
Do earthquakes destroy the land?
No. They may damage man made structures and cause the earth's crust to deform but they do not destroy it. The only place earth's crust is destroyed (although recycled may be a more appropriate term) is at a subduction zone where oceanic crust sinks back down into earth's mantle.
Where does the process of plate separation and lithosphere formation take place?
The process of plate separation and lithosphere formation typically takes place at mid-ocean ridges, where tectonic plates are moving away from each other due to seafloor spreading. As the plates diverge, magma rises from the mantle to create new oceanic crust, which solidifies to form the lithosphere.
Is there any place on earth where materiel from the surface moves into earths interior and some of it melts?
Yes. Such areas are called subduction zones. They develop where two tectonic plates converge and at least one plate is made of oceanic crust. The denser oceanic plate sinks into the mantle.
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.
Is continental crust thinner than oceanic crust?
It is about 20 miles or 30 kilometers.
lithosphere?
a rigid layer that can break under stress
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.
What is the difference between the volcanic activity that occurs at a hot spot and the volcanic activity at a subduction boundary between an oceanic plate and a continental plate?
The hot spot volcanic activity is not dependent on the subduction and melting of oceanic crust. The hot spot simply appears to be a non-moving place in the Earth's mantle where heat rises from the interior.
