An intrusion is an igneous rock body that forms from crystallized magma under Earth's surface.any mountain ranges, such as the Sierra Nevada in California, are formed mostly by intrusive rock, large granite (or related rock) formations. Intrusions are one of the two ways igneous rock can form; the other is extrusive, that is, a volcanic eruption or similar event.
Admit it: you were pronouncing the word âSmaugâ â the name of the Hobbit dragon, the one whoâs in the subtitle of the upcoming movie installation â as âsmog.â.
Gollum, also known as SmÃ©agol (OE, pron. [ËsmÃ¦Í¡ÉËÉ£oÉ«]), was a creature (originally a Stoorish Hobbit) who bore the One Ring. He lived in the Misty Mountains for most of his life. In T.A. 2941 he lost the Ring to Bilbo Baggins. For the rest of his life he sought to recover his precious birthday present.