The study of speech sounds in language or a language with reference to their distribution and patterning and to tacit rules governing pronunciation. 2. The sound system of a language: the phonology of English. phoÂ·noÂ·logâ²ic (fÅâ²nÉ-lÅjâ²Ä­k) , phoâ²noÂ·logâ²iÂ·cal (-Ä­-kÉl) adj.
What does a porphyritic texture indicate about the history of an igneous rock? the magma sat and cooled a bit below the Earth's surface, thus giving time for the large crystals to grow, before erupting onto the surface and cooling very quickly
Vein and extrusive rocks are characterized by a porphyritic texture, which is brought about by the rapid crystallization of the magma related to cooling and a loss of volatile components. This texture is sometimes observed around the edges of intrusive bodies.exture and structure of igneous rocks. The texture of igneous rocks depends on the composition of the magma and the conditions surrounding the magmaâs cooling. The textures are different in intrusive, vein, and extrusive rocks.