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The East Sikhote-Alin volcano-plutonic belt is a product of the main post-accretionary igneous event in the Sikhote-Alin fold system. Most of tin, boron and lead-zinc deposits of Southern Far East Russia are related to the volcano-plutonic complexes of this belt, particularly occurring in the eastern part of the belt, but coeval Sn-polymetallic deposits are chracteristic for its western periphery.We analyzed sulfur isotope composition (δ 34 SCDT) of galena from Pb-Zn and Sn-polymetallic deposits, and also made preliminarily regional investigation of magnetic susceptibility of granitoids and volcanic rocks of the East-Sikhote-Alin volcano-plutonic belt. The magnetic susceptibility was measured by magnetometers MA-21 and LAM-24, and kappa-meters IBM-2 and KLY-2. We report results of these investigations in this paper. Geological SettingThe Sikhote-Alin fold system was formed from early Jurassic to early Cretaceous time, as result of fast growing of Eastern Asia continental margin during its active interaction with oceanic plates. The following terranes are distinguished from west to east at the present structure: Samarka (SM in Fig. 1) -Jurassic-lower Cretaceous accretionary wedge, Zhuravlevka (ZR)-Lower Cretaceous (up to Early Albian) turbidite-basin terrane, Kema (KM)-Lower Cretaceous (Aptian-Albian) island arc terrane, and Taukha (TU)-Lower Cretaceous (Valanginian -Hauterivian) accretionary wedge.The Burea-Khanka superterrane (Paleozoic microcontinent) occurs to the west of the Sikhote-Alin fold system. Numerous ilmenite-series granitoids intrude into the microcontinet and the Mesozoic sedimentary basements during the final accretionary stage (130-100 Ma) in the Sikhote-Alin region. Their distribution covers the area adjacent to the rigid Burea-Khanka superterrane and completely embraces the Samarka accretionary wedge and the western Zhuravlevka turbidite-basin terrane. are tin dissemination and veins, composed of cassiterite, quartz and silicate minerals. These vein deposits are related to an ultra-potassic rhyolite dikes. Sulfur isotope compositions of galena from the tin deposits of Luzhki metallogenic zone vary from -0.5 to -3.8 ‰, averanging -2.5 ‰ in the δ 34 S. Larger δ 34 S values in the ores from the magnetite-series igneous terrane but smaller values in those of the ilmenite-series igneous terrane are similar to the distribution pattern observed in the Inner Zone of Southwest Japan.

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