Fig. 8. Results of geochronological studies (U–Pb and Ar–Ar methods) of granitoids of the Kalba–Narym batholith. Possible stages of granitoid magmatism for the Kalba–Narym batholith are marked gray. The results of SHRIMP II U–Pb dating of granitoids of the Kunush complex are after ( Kuibida et al

Fig. 9. Dependence of ε Nd ( T ) on age for granitoids of the Kalba–Narym batholith. 1 , granodiorites of the Kalguty complex; 2 , plagiogranites of the Kunush complex; 3 , granodiorites and granites of the Kalba complex; 4 , leucogranites of the Monastyri complex; 5 , granite of the Kaindy

and terrigenous deposits; 2 , boundaries of the Sentash–Baybura granitoid belt; 3 , exposed plagiogranitoid intrusions of the Kunush complex; 4 , outlines of unexposed granite massifs, from geophysical data; 5, 6 , concealed granitoid intrusions of: 5 , acid, 6 , moderately acid composition; 7 , faults; 8

of the Kalba–Narym terrane; 2 , prebatholith subalkalic Bt–Amph gabbro of the Kalba–Narym terrane; 3 , granodiorites and granites of the Kalguty complex; 4 , plagiogranitoids of the Kunush complex; 5 , synbatholith subalkalic gabbro and picritoids of the Char zone ( Khromykh et al., 2013 ); 6

Fig. 1. Generalized tectonics of Zaisan folded area, a fragment of Altai collisional shear system. 1 — Early Paleozoic orogenic complexes of Kazakhstan and Siberia continents, undifferentiated; 2 — Late Paleozoic terranes of Zaisan folded area corresponding to active continental margins

complexes; 7 , dacites, rhyodacites, and rhyolites of the Saldyrma Formation making up the Aktobe and Kalguty troughs; 8 – 12 , granitoid complexes of the Kalba–Narym batholith: 8 , Kalguty granodiorite–granite complex ( a , dikes; b , massifs); 9 , Kunush plagiogranite complex ( a , dikes; b