Is Granite The Oldest Igneous Rock

Granite is the main component that makes up the earth s continental crust.

Is granite the oldest igneous rock.

Granite is also what s called a plutonic rock meaning that it forms deep underground. Granite coarse or medium grained intrusive igneous rock that is rich in quartz and feldspar. Other types of rocks include sedimentary rocks limestone travertine etc and metamorphic rocks marble quartzite etc. Granite is one of the oldest rocks in the world.

The stone is cut from rock beneath the earth s surface. Granite is an igneous rock one that is formed by the cooling and solidification of magma. Tonalite mafic rocks metasedimentary rocks banded iron formations granite and granodiorite photo source. This evidence suggests that some granite is not igneous in origin but metamorphic.

Crystallized at depth granite masses are exposed at the earth s surface by crustal movement or by the erosion of overlying rocks. 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 oldest igneous rock in the world believed to have been formed as long as 300 million years ago. Granite is a grained igneous rock that is formed when magma cools and deep within the earth s crust therefore it is an structure.

Alchetron the isua greenstone belt is one of the oldest rock formations on earth aged between 3 7 3 8 billion years. The granite is an igneous rock that is formed by magma underground that moves and cuts across existing rock layers. Granite does not simply appear naturally as a slab. Some granite is the oldest known rock on earth.

Learn more about the properties and uses of granite in this article. 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. Schist is a metamorphosis of an existing rock. The granite cut through the schist.