Geological Structure of the Predsettedaban Trough

The geological structure, main tectonic elements and the nature of distribution of major units of the fill of Predsettedaban trough are analyzed on the basis of the newest data obtained. Newest data was reprocessed by specialists of VNIGRI and OAO Yakutskgeophysika. This area is the southeast boundary of link structures of the Siberian platform. Major tectonic elements of the region is the Aldan-Maya depression. Depression was formed in place pericratonal deflection on eastern edge of Aldan anticlise. On top of foundation Aldan-Maya depression is a monocline submerged under Verkhoyansk-Kolyma fold-thrust system. Foundation of the region represented deep-metamorphosed rocks of Archaean. Sedimentary fill composed by four structural tiers: Proterozoic(?)-Lower Riphean, Riphean, Vendian-Cambrian and Mesozoic. Riphean deposits have interesting petroleum potential prospects.