Igneous Rocks

igneous rock  The texture of an igneous rock is dependent on the rate of cooling of the melt: slow cooling allows large crystals to form, Intrusive, or plutonic, igneous rock forms when magma is trapped deep inside the Earth Great globs of molten rock rise toward the surface Some of the magma

Igneous rocks are formed from the solidification of molten rock material There are two basic types: 1) intrusive igneous rocks such as diorite, gabbro, The minerals in a phaneritic igneous rock are sufficiently large to see each individual crystal with the naked eye Examples of phaneritic igneous rocks are

Typical occurrences of igneous rock bodies on the surface include lava flows, lava domes, necks and spines, and pyroclastic deposits Plutonic bodies with Explain how cooling of magma leads to rock compositions and textures, and how these are used to classify igneous rocks; Analyze the features of common igneous