Geoinformatika 2010; 1 : 24-32

TWO STAGES OF PROTEROZOIC TECTONO-MAGMATIC ACTIVATION IN PRECAMBRIAN OF THE UKRAINIAN SHIELD, THEIR PETROGENETIC AND GEODYNAMIC INTERPRETATION

Ponomarenko A.N., Esipchuk K.E., Konoval N.M.

The article gives a petrographical, petrochemical and geochemical description of magmatic intrusive complexes that present two stages of the Precambrian Paleoproterozoic activation of the Ukrainian shield of the age of 2000–1900 and 1800–1700 Ma: Buky, Novoukrainka and Hlibodarovka, as well as Korosten, Korsun-Novomyrgorod and Southernkalchyk respectively. These petrographic associations are formed by mantle diapires related to the subduction of ocean plates under continental plates in the central-western and south-eastern parts of the shield.