Anabar Shield

The Anabar Shield is a shield in Siberia forming an exposed part of the basement of the Siberian Craton, and together with the Aldan Shield to its southeast it is one of the craton's main features. On the surface it appears as an upland of moderate height built of gneisses and crystalline shales folded during the Archean, cut by numerous dislocations and intrusions, with slightly undulating layers of Proterozoic deposits in its outer zone; it coincides geographically with the Anabar Plateau at the northern end of the Central Siberian Plateau, in the upper reaches of the Anabar, Olenyok and Kotuy rivers.