The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.
An erupting volcano occurs when the pressure of the molten lava beneath becomes too great.
Granitic and andesitic rocks are plentiful on Earth because they are primarily formed by the cooling and solidification of magma beneath the Earth's crust. These rocks are commonly found in continental crust due to the process of subduction, where oceanic crust is forced beneath the continental crust, leading to the melting and formation of granitic and andesitic rocks.
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
There are actually well over 4,000 known minerals as of 2010; of these, about two dozen form the bulk of the rock of the earth's crust.
one of the common minerals that make up most of the rocks of the earths crust
the crust and the core
one of the common minerals that make up most of the rocks of the earths crust
one of the common minerals that make up most of the rocks of the earths crust
The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.
iron and magnesium
Igneous rocks that cool quickly beneath earth's crust are known as intrusive rocks. These rocks will form from magma which will cool and solidify quickly.
one of the common minerals that make up most of the rocks of the earths crust
The two most common types of rock beneath the Earth's crust are basalt and granite. Basalt is an extrusive igneous rock that forms from the cooling of magma on the Earth's surface, while granite is an intrusive igneous rock that forms from the slow cooling of magma beneath the Earth's surface.
The most common type of rock found at the Earth's surface and in the Earth's crust are sedimentary rocks. These rocks are formed from the accumulation and lithification of sediments such as sand, mud, and organic debris. Sedimentary rocks cover about 75% of the Earth's surface.
it is made of rocks
Crustal rocks: 2-3 ppm Sea water: cca. 3,3 ppb