geologist baltybaev (2013) have identified the following terranes as composing the svecofennian orogen (parenthesis indicate location): "skellefteå terrane" (skellefte river basin), "bothnian terrane" (västernorrland and ostrobothnia), "pyhäsalmi terrane" (northern savonia), "central terrane" (central finland), "western terrane" (gävleborg), "ladoga terrane" (southern finland–russia border) and the "southern terrane" (bergslagen and southern finland).