Baltic Shield
SEGMENT OF THE EARTH'S CRUST IN THE EAST EUROPEAN CRATON, REPRESENTING A LARGE PART OF FENNOSCANDIA, NORTHWESTERN RUSSIA AND THE NORTHERN BALTIC SEA
Baltic shield; Fennoscandian Shield; Fennoscandian shield; Baltic/Fennoscandian Shield; Fenno-Scandian Shield
The Baltic Shield (or Fennoscandian Shield) is a segment of the Earth's crust belonging to the East European Craton, representing a large part of Fennoscandia, northwestern Russia and the northern Baltic Sea. It is composed mostly of Archean and Proterozoic gneisses and greenstone which have undergone numerous deformations through tectonic activity.