stripes
Occurrence number:
136-03-033
Country:
Russia
Region:
Vitim subprovince
Location:
Longitude: 113.2, Latitude: 53.6
Carbonatite:
No
This intrusion, with an area of about 210 km2, breaks through early Proterozoic metamorphic formations as well as granitoids of early to mid-Proterozoic age. A considerable part of the area of the massif is overlapped by Neogene subalkaline basalts and basanites the intrusion consists mainly of syenites, both peralkaline and subalkaline, as well as peralkaline granites. The syenites cover some 180 km2 and veins and dykes are widespread, the latter being granite pegmatites with riebeckite, granite porphyries and grorudites.
Age:
Permian-Triassic according to geological evidence.
References:
ZANVILEVICH, A.N., LITVINOVSKY, B.A. and ANDRE’E V, G.V. 1985. The Mongolian-Transbaikalian alkali-granitoid province (geology and petrology). Nauka, Moscow. 232 pp.
Map:
Fig. 2_202. Sherbakhtinskii (1) and Ingurskii (2) (after Zanvilevich et al., 1985, Fig. 2.10).
Location: