The Transscandinavian Igneous Belt (Swedish: Transskandinaviska magmatiska bältet), abbreviated TIB, is one of the major lithological units of the Baltic Shield. It consists of a series of batholiths in Sweden and Norway forming a ca. 1400 km long belt running from Lofoten, Norway, in the north to Blekinge, Sweden, in the south. The Transscandinavian Igneous Belt and its rocks solidified from magma between 1810 and 1650 million years ago during the Mesoproterozoic. The Transscandinavian Igneous Belt was likely formed in an Andean-type geological environment, implying it was once parallel to a destructive plate boundary.[1] The belt was first identified in the 1980s and was referred as the "Transscandinavian Granite-Porphyry Belt". The current name was first applied in 1987.[2]