The origin of the 1.73-1.70 Ga anorogenic Ulkan volcano-plutonic complex, Siberian platform, Russia: inferences from geochronological, geochemical and Nd-Sr-Pb isotopic data - Larin, A.M.; Amelin, Yu.; Neymark, L.A.; Krymsky, R. (Anais da Academia Brasileira de Ciencias, 1997)