There is new rocks that build up they first start as lava and they build up and make new crust
I think your question is how did the crust originate. Scientists believe our planet originated about 4.5 billion years ago, and was extremely hot. The outer layer began to cool first, but extremely slowly. The outer layer, is called the crust, and ranges from 10 to 70 km thick. (see link) The crust is formed by the cooling of the earth, which is still going on. You should think of the crust as the thin, outer layer, but its a bit more complicated. However, scientists in the last 50 years came to the conclusion that this outer layer was composed of large sections or plates and were capable of moving, albeit extremely slowly. This means that the locations of the continents have shifted considerably in the last 4 billion years. I've included a few links where you can learn more about the crust, mantle and core. You may also want to read about continental drift and plate theory.
When the Earth was still in molten form, and still cooling, lighter elements and compounds such as silicates (quartz, feldspar) floated toward the surface, while heavier elements (iron, nickel, radioactive elements) sank toward the core. Igneous rocks formed from magma still bring metals and other heavy elements to the surface as the crustal plates shift and subduct.
The crust formed from molten material as the planet's surface cooled sufficiently to allow minerals to crystallize. The first crustal rocks were therefore igneous in nature.
the earth was a big hot ball made up of many rocks and gases. After millions of years the outer portion of the earth coooled down. We live on this outer layer of the earth called the Crust.
I think it formed during the Cambrian Period.
Ask the teacher :)
because oshieotic crust is under Mantle is thicker
Yes all metals are in the earths crust in ore form.
The top of the mantle and the crust form the lithospere
100 % of Earth's crust is composed of elements in the form of varying minerals and other matter!
it's called a scab
They form in the ocean crust.
No. Geysers are not beaneath the crust. They form within the crust, relatively vclose to the surface.
They form when the oceanic crust goes under the Continental crust. The oceanic crust then forms the trenches through a process called subduction.
the crust's plates shift until they have reached their form
plate tectonics.
by earth's crust
The top part of the mantle and the crust above it form into lithosphere.
because oshieotic crust is under Mantle is thicker
what can form deep insides earths crust by crystallisation of melted materials
how the thin outer crust is floating on the thick liquid mantle, causing the crust to move and form a divergent plate boundary
the crust's plates shift until they have reached their form
Yes all metals are in the earths crust in ore form.