Angara-Vitim Batholith
The Angara-Vitim batholith is group of plutons in the eastern Siberia, just east of Lake Baikal. The batholith formed in the Devonian–Early Carboniferous likely in connection to a mantle plume. It formed about the same time and by the same process as the Kalba-Narym batholith in eastern Kazakhstan. Common rock types are granite with biotite and granodiorite. The rocks belong to the potassium, high-K and shoshonite subseries of the calc-alkaline magma series. Some rocks do belong to the alkaline magma series. References

{{reflist Batholiths of Asia Carboniferous Asia Carboniferous magmatism Devonian Asia Devonian magmatism Geology of Siberia ...
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Pluton
In geology, an igneous intrusion (or intrusive body or simply intrusion) is a body of intrusive igneous rock that forms by crystallization of magma slowly cooling below the surface of the Earth. Intrusions have a wide variety of forms and compositions, illustrated by examples like the Palisades Sill of New York and New Jersey; the Henry Mountains of Utah; the Bushveld Igneous Complex of South Africa; Shiprock in New Mexico; the Ardnamurchan intrusion in Scotland; and the Sierra Nevada Batholith of California. Because the solid country rock into which magma intrudes is an excellent insulator, cooling of the magma is extremely slow, and intrusive igneous rock is coarse-grained ( phaneritic). Intrusive igneous rocks are classified separately from extrusive igneous rocks, generally on the basis of their mineral content. The relative amounts of quartz, alkali feldspar, plagioclase, and feldspathoid is particularly important in classifying intrusive igneous rocks. Intrusi ...
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