Metallogenic OFS types, subtypes of noble metal type. In brackets, their numbers shown in Figure 6 | Age (million years) intervals of OFS formation (isotope-geochemical data) | Primary rock complexes with increased geochemical background of Fe, Ti, Ni, Pb, Zn, and noble metals | Deposits, mineral occurrences examples of suture tectonic zones |
1 | 2 | 3 | 4 |
Nyandony subtype | 1600-550 | Carbonaceous volcanogenic-carbonate-terrigenous strata with volcanite bodies of picrite-basalt-andesite-rhyolite series | Kamenny, Namama, Chipikan, Bakhternak, Troitsk |
Iron-ore | 1580-927 | Volcanogenic-sedimentary strata with diabases sills, basalts of the komatiite-toleite association | Tiya (same name ore zone), Yazov (Vitim iron-ore region) |
Pyrite-polymetallic | 1500-550 | Carbonaceous-siliceous-carbonate-terrigenous strata with volcanites of the komatiite-basalt and basalt-rhyolite associations | Kholodny |
Darasun subtype | 1472-100 | Plutonic ultrabasite-basite complexes of the komatiite-toleite association | Darasun, Kara, Itaka, Klyuchevsky, Ushmun, |
Irokinda | 1060-470 | Volcano-plutonic ultrabasite-basite complexes of the komatiite-basalt-boninites series | Irokinda, Gorny, Kedrovsky, |
Baley subtype | 1050-114 | Buried ultrabasite-basite komatiite-tholeiite association | Baley, Taseevo |
Copper-nickel (±PGE) | 937-600 | Stratified arrays of dunite-peridotite-gabbro and dunite-troctolite-gabbro formations | Chaya, Baikal, Marinkin |
Bodaybo subtype | 870-<65 | Buried basite-ultrabasite complex. Black shale formation of over rift depressions | Sukhoy Log, Chyortovo Koryto, Pervenets |
Irba subtype | 825-550 | Komatiite-basalt-boninite volcano-plutonic association | Yubileyny, Irba |
Iron-titanium (±V, P) | 780-590 | Stratified arrays of anorthosite-pyroxenite-gabbro formations | Vitimkan, Irokinda, Kedrovsky |