Is Granite The Oldest Igneous Rock

Granite is also what s called a plutonic rock meaning that it forms deep underground.

Is granite the oldest igneous rock.

Tonalite mafic rocks metasedimentary rocks banded iron formations granite and granodiorite photo source. Some granite is the oldest known rock on earth. Many people recognize granite because it is the most common igneous rock found at earth s surface and because granite is used to make many objects that we encounter in daily life. Granite is a grained igneous rock that is formed when magma cools and deep within the earth s crust therefore it is an structure.

The schist is a metamorphic rock that formed as a result of heat and or pressure applied to a sedimentary or igneous rock. Granite is the best known igneous rock. Other types of rocks include sedimentary rocks limestone travertine etc and metamorphic rocks marble quartzite etc. For those who ve forgotten your high school science classes igneous rocks are formed from cooling lava or magma.

Crystallized at depth granite masses are exposed at the earth s surface by crustal movement or by the erosion of overlying rocks. Schist is a metamorphosis of an existing rock. Granite does not simply appear naturally as a slab. This evidence suggests that some granite is not igneous in origin but metamorphic.

The granite is an igneous rock that is formed by magma underground that moves and cuts across existing rock layers. Granite is one of the oldest rocks in the world. Alchetron the isua greenstone belt is one of the oldest rock formations on earth aged between 3 7 3 8 billion years. Granite coarse or medium grained intrusive igneous rock that is rich in quartz and feldspar.

Granite is the main component that makes up the earth s continental crust. Granite is the oldest igneous rock in the world believed to have been formed as long as 300 million years ago. The stone is cut from rock beneath the earth s surface. The granite cut through the schist.