Tectonic Plates and Activity in Russia

 Russia rests mostly on the Eurasian Plate (a bit of Russia poking into the North American plate), with frequent seismic activity occurring on the Kamchatka Peninsula. The Kamchatka Peninsula is special in that it is debated whether or not it is a part of the North American plate, or instead on a microplate separate from both the North American Plate and the Eurasian Plate called the "Okhotsk microplate"

Regardless, the subduction of the Pacific Plate and the plate which Kamchatka is on is part of is part of why the Kamchatka peninsula has 68 active volcanoes. This section of land is located on the Kuril-Kamchatka island arc, which is part of the "Ring of Fire."

Another area of frequent tectonic activity is the Caucasus Region, which part of Russia resides in. The Caucasus mountains are a product of the collision between the Arabian and Eurasian plates. Because the Caucasus Region rests on this boundary, earthquakes are frequent in that part of Russia.

(note how in the picture below, the Okhotsk plate is not marked. This plate would lie between the Philippine plate, the pacific plate, and the Eurasian plate)