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.
âGollum referring to the Ring. Gollum, originally known as SmÃ©agol (or Trahald), was at first a Stoor, one of the three early Hobbit-types. The name Gollum was derived from the sound of his disgusting gurgling, choking cough. His birth can be estimated to have happened in the year TA 2430. His death date is given as March 25, 3019.