...Fig. 2. Rb-Sr isochrons for granitoids from the Aleursky Range. For comparison, an isochron for gneiss-granites from the Kruchina dome [ 5 ] is given. 1 — granodiorites, 2 — granites, 3 — veined aplite-like leucogranites and aplites. 1–10 — sample numbers. Other designations see in the text. ...

... of granitoid pebbles in the Permian conglomerates, i.e., their age varies in a wide range. The compositional differences between the granites of the group I massifs ( Fig. 3 , C) are still smaller and are pronounced only in Na/K ratios reflecting the transverse petrochemical zoning of the SSMA...