Of the three principal rock types (igneous, sedimentary, and metamorphic), igneous rocks can be thought of as "primary" rocks because they crystallize from a liquid. Sedimentary and metamorphic rocks, ...

Igneous rocks close igneous rockIgneous rocks are those which have been formed by the cooling and solidification of molten rock (magma) from underneath the earth’s crust. are formed by magma ...

Igneous intrusions are a type of rock feature. They form when molten rock cools below the surface of the Earth. Join Isla and Connor as they explore igneous rock landscape features at Traprain Law ...

Abstract: Tertiary igneous rocks in Qikou Depression, East China are primarily basic rocks. Two types of igneous reservoirs including the effusive basaltic reservoir and the near-surface intrusive ...

occurrences and origins of common igneous and metamorphic rocks. This course includes a laboratory section with an emphasis on the identification of rocks and minerals in hand specimen.