Nain Province (Paperback)

High Quality Content by WIKIPEDIA articles! The North Atlantic craton is exposed in parts of the coast of Labrador, parts of central Greenland, the Scourian Complex of northwestern Scotland and is unexposed in northern Norway. The North Atlantic craton fragmented 2450 to 2000 million years ago.:847 When North America and Europe rejoined, the North Atlantic craton was triangular shaped with each side 600 km (370 mi); this unit was separated when the Labrador Sea formed 61 to 40 million years ago. The North Atlantic craton's crust varies between 28 to 38 km (17 to 24 mi) thick:673 and its rocks are 85% granitoid gneisses. The Nain province was intruded by the 1350- to 1290-million-year-old Nain Plutonic Suite; 673 composite anorthosite-granitic intrusions which divide the Nain province into the northern Saglek block and the southern Hopedale block.