Jack's Blog

 According to source Russia contains 117 Holocene Volcanoes. "Holocene" refers to the current geological time period, spanning from 11700 years ago to now. Of the volcanoes in Russia, 61 are currently considered active source . Something interesting is that this source states that there are 77 volcanoes currently in Russia, conflicting with the 117 from the previous source. Making the assumption that both sources are credible (the first being a .edu and the second being a .info, which I think is credible) there could be a good reason for the difference in data. Volcano.si.edu lists each volcano individually, and the reason they list more could be because of the inclusion of volcanoes thousands of years ago which worlddata.info may not count (for example, the Bolshoi-Kekuknaysky volcano last erupted in 5310 BCE), and also the fact that volcano.si.edu also counts all volcanoes on shared boundaries, which might be excluded from the other website's count. In the Kamchatka Pe

 Examples of where earthquakes are located in Russia can clearly be seen in this image taken from a 2017 publication. Areas where earthquakes are the most frequent include the Kamchatca Peninsula and Sakhalin Island in the East, as well as the Caucasus Region in the southwest. This is because both areas are near plate boundaries, and Kamchatca as (mentioned before) has extreme amounts of tectonic activity. Something that I didn't understand about the map was why there was earthquakes documented along the east going towards the Artic Ocean despite there not being any plate boundaries near there (as it seemed to follow a random path along the Eurasian plate). However, i found my answer in the form of this graph which displays the fault lines located in Russia. Something to note is that the maps are projected differently, so it is recommended to try to match up similar landmarks such as islands or bodies of water when comparing the two graphs. These faults are the cause of the occas

 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 h