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.
Acnologia (ã¢ã¯ãã­ã®ã¢ Akunorogia), also known and fearsomely reputed as  The Black Dragon  in the Book of Apocalypse, is a puissant Dragon and an enemy of humanity. He is one of the main antagonists of Fairy Tail.cnologia as a human before transforming into a Dragon. For many years, Acnologia was feared by the people of Earth Land, as he was credited with the single-handed destruction of an entire country. At some point of time, Acnologia ran into Gildarts Clive when the Mage was on his 100 year quest on Zonia Mountain.