دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

adj: volcanic;derived from magnetic materials poured out on the earths surface, as distinct from intrusive rocks formed from magma that has cooled and solidified beneath the surface.

n: an igneous rock composed primarily of feldspar, quartz. and mica. It is the most common intrusive rock - that is, it originally solidified below the surface of the earth. Its rock crystals are easily seen by the eye.

common igneous rock. No effective permeability.

n: an igneous rock that, while molten, penetrated into or between other rocks and solidified.

n: a kinds of eruptive rock that formed by condensation of other rock beause of magma inbreak.