Igneous and metamorphic rock make up 95% of the rocks in Earth's crust. Only a thin layer is made up of sedimentary rock.
Igneous rocks are formed when rocks reach the melting point becoming magma, then the magma starts to cool and crystallizes to form igneous rocks. Metamorphic rocks are made when they come in contact with a mass of magma but does not melt providing the energy to drive chemical reactions that recrystallize minerals.
The thin crust of a rift zone causes melting in the upper mantle, resulting in volcanic activity.
Extrusive rocks are... extruded... onto the surface as the lava that we all think of. It cools fairly quickly, into rocks with fairly small crystals (might need a magnifying lens to see them). The exact chemistry of the parent magma will determine the type of rock. Oceanic volcanoes are generally basaltic (mafic or ultramafic), continental are generally granitic (felsic or intermediate). They're put down in "relatively thin" layers Intrusive rocks cool for thousands of years beneath the surface in huge plutons or batholyths. This allows them to grow very large crystals (easily seen by the unaided eye). These intrusive rocks are almost always granitic-type rock. My sources are: from my science teacher who worked at the science museum yahooanswer.com ask.com wikipedia the free encyclopedia I hope this information helped. Good luck!
You could try, but nonmetals are very brittle, so the wire would probably break.
brittle
The thin crust of a rift zone causes melting in the upper mantle, resulting in volcanic activity.
Igneous and metamorphic rock make up 95% of the rocks in Earth's crust. Only a thin layer is made up of sedimentary rock.
the elements that are usually brittle are the really thin ones.
Igneous rocks are formed when rocks reach the melting point becoming magma, then the magma starts to cool and crystallizes to form igneous rocks. Metamorphic rocks are made when they come in contact with a mass of magma but does not melt providing the energy to drive chemical reactions that recrystallize minerals.
the oldest rocks on earth can be found in Greenland. They ar epreserved because they are always covered with a thin laye of ice.
"The opaqueness of its atmosphere hides the surface of Venus from our view." "Most forms of igneous rocks have a quality of opaqueness unless cut into very thin slices.
Both crystalline and brittle mean to break easily - fine china, thin glass, etc.
They become thin and brittle.
Because it's so thin and brittle.
Igneous rocks are formed when magma crystallizes and cools into a solid form. There are two types of igneous rocks--intrusive igneous rocks and extrusive igneous rocks.Intrusive:Intrusive igneous rocks are formed when the melted rock (magma) slowly rises toward, but does not reach the surface. As these pockets of magma cool slowly underground, minerals crystallize and the magma solidifies, becoming intrusive igneous rock, like granite and gabbro.Extrusive:Igneous rocks are also formed when volcanoes erupt, causing the magma to rise above the Earth's surface. When magma appears above the surface, it is called lava. Extrusive igneous rocks are formed as the lava cools above ground. Examples of extrusive igneous rock are basalt, rhyolite, pumice, and scoria.igneous rocks are formed by lavaWell When melted rock cools quickly, it hardens before any mineral crystals can grow large. as a result, igneous rocks that form above ground have small or no crystals :)Igneous Rocks are made of magma and lava because it comes out of a volcanoFrom volcanoes.from lava cooling.Molten rock cools and turns solid.
The thin flat layering found in most metamorphic rocks is called foliation