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What would happen if ocean crust and continental crust combine?
They weld together into new continental crust.
What happen to the continental crust after the ice from the ice age melted?
After the ice from the ice age melted, the weight of the ice was removed from the continental crust. This caused the crust to gradually rebound or rise up due to the release of the pressure, a process known as post-glacial rebound or isostatic rebound. This uplift can continue for thousands of years after the ice has melted.
Is the Antarctic plate oceanic?
No, the Antarctic Plate is a tectonic plate that is primarily continental in nature, as it mostly consists of continental crust beneath the ice sheet. It is surrounded by oceanic crust of the Southern Ocean.
Material that melted to form the early continents was what?
The material that melted to form the early continents was primarily basaltic oceanic crust. This crust was melted by the heat generated in the Earth's interior, resulting in the formation of granitic continental crust through processes like partial melting and differentiation.
What happen when a plate carrying oceanic crust collides with a plate carrying continental crust?
The contiental cdrust is forced under the continental crust in a process called subduction.
What happens with a plate of oceanic crust collides with a plate of continental crust?
The oceanic plate is made of denser (and thinner) rock than the continental crust, so the oceanic plate gets subducted (pushed underneath) where it descends and gets melted by geothermal heat.
What happens when a plate of oceanic crust collides with a plate of the continental crust and why does this happen?
When oceanic crust collides with continental crust, the denser oceanic crust is forced beneath the continental crust in a process called subduction. This happens because oceanic crust is heavier, colder, and more dense than continental crust, making it susceptible to being subducted under the lighter continental crust. This collision can result in the formation of mountain ranges, volcanic arcs, and deep ocean trenches.
Does continental crust have a greater density than oceanic crust?
Yes, that is the reason oceanic crust is at a lower elevation compared to continental crust. Oceanic crust sub-ducts under the less dense continental crust. Continental crust is much older than oceanic crust, because oceanic crust is constantly being destroyed and created.
What rock forms when an old rock is melted then cools?
An igneous rock called a "magma" forms from the melting and subsequent cooling of an older rock. Examples include granite formed from the cooling of melted continental crust or basalt formed from the melting of oceanic crust.
Which is thicker continental crust oceanic crust?
Continental crust is the thicker of the two: it extends far beneath and above the Oceanic crust.
What is older the oceanic crust or the continental crust?
Continental crust is far older than oceanic crust.
Why is the ocean crust thinner than the continental crust?
It is not. The oceanic crust is thinner than the continental crust!
