“…The oldest intrusions in the ore district are subalkaline monzonite to granosyenite of the Berezovka-Ararat complex (110-92 Ma) (Gonevchuk et al, 2010(Gonevchuk et al, , 2011. Besides granite of Cretaceous age, monzonite-granosyenite − K-rhyolite of the Uglovsky volcano-plutonic complex (90-78 Ma) intruded the Upper Jurassic-Lower Cretaceous terrigenous rocks (Gonevchuk et al, 2011;Orekhov et al, 2006). Mineralization of the Sn-sulfide and cassiterite-quartz stages formed in the Arsenyevskoe deposit during this time (90-80 Ma).…”