...Fig. 1. A scheme of metamorphic zoning of the Tongulak complex. 1 — chlorite zone; 2 — cordierite (Crd) zone; 3 — sillimanite (Sill) zone; 4 — staurolite-free (St-out) zone; 5 — oligoclase-quartz gneisses; 6 — diaphthorites; 7 — granite intrusion; 8 — gabbro-monzonite...

...Fig. 13. Geochemical diagrams depicting the specific composition of biotite-amphibole schists and gneisses of the Kurai complex (for explanations, see the text). 1 , Tongulak series; 2 , Il’dugem series. ...

... Ma (Kruk et al., 2004). The age of migmatized kyanitesillimanite-biotite gneisses within the same block was identified based on individual metamorphogenic zircon grains at 443 ± 9.5 and 422.9 ± 9.1 Ma ( Gusev, 2013 ). During the formation of the Tongulak zonal metamorphic complex, a thermal source...

... decreases to 10%, and muscovite appears. Tectonic deformations of the metamorphic strata of the Kurai (Tongulak) complex that host the Terandzhik pluton took place in several stages within 426–348 Ma (Kuibida, 2009 ). The K–Ar isotope age of the pluton was estimated at 265–215 Ma ( Shokal’skii et al...

... in hydrocarbons. Granulite facies: 1 - Aldan Shield, paragenesis: Q+Pl+Bt+Cord+Sill+Hyp; 2 - Aldan Shield, paragenesis: Q+Pl+Bt+Cord+Sill+Gr; 3 - Anabar Shield, paragenesis: Q+Pl+Bt+Cord+Sill+Fsp. Amphibolite facies: 4 - the Baltic Shield, paragenesis: Gl+Ant; 5 - Tongulak complex, Gorny Altai, paragenesis: Q+Pl...

... of their formation. The results of this research are used for constructing quantitative petrogenetic grids for various chemical systems. Modern petrogenetic grids for metapelites correctly and thoroughly describe mineral equilibria in rock complexes that occur at moderate- and high-pressure depths. Nevertheless...

... is surrounded by mountains. In the north, it is the Kubadru neotectonic uplift, with its highest summit (Verkhovie Ortolyka) at 3446 m asl. In the northeast there are the en-echelon Kurai and Tongulak Ranges, both being the highest (up to 3200 m) parts of the strongly asymmetric Kubadru–Bashkaus block with its...

... junction zone in the Late Devonian-Early Carboniferous. Table 1 lists results of analysis of massive and weakly sheared rock varieties and gneissoid rocks from the Kubadru gabbro-diorite-granodiorite-granite complex. The rock composition ( Fig. 4 ) evidences no redistribution of major elements...

...–Early and Middle Ordovician [ 31 ]. Many zonal metamorphic complexes on Gorny Altai are of similar nature and Ordovician age (Dzhosater and Tongulak blocks), or Devonian—Early Carboniferous age (Bashkaus-Teletskoe block), or Permian age of metamorphism and granitization (blocks of the Irtysh zone...