AGE AND GEOCHEMISTRY OF THE LUCHINSKY MAFIC-ULTRAMAFIC PLUTON, THE SOUTHEASTERN FRAMEWORK OF THE SIBERIAN CRATON

Abstract

Mafic–ultramafic plutons (Lukinda, Kengurak–Sergach, Mongol, Veselka, Nyukzha, Luchinsky, Il’deus, and others) are widespread in the Dzhugdzhur–Stanovoi Superterrane of the southeastern framework of the Siberian Craton separated by the Dzheltulak Suture Zone from the Selenga–Stanovoi Superterrane. These plutons were traditionally referred to as Early Precambrian. However, new data on a much younger age of many igneous complexes in the southern framework of the North Asian Craton have been obtained recently. In this regard, the necessity arose to specify the chronological position of mafic–ultramafic complexes in the geological history of the region.