The most recent volcanic activity in California occurred in 1989, when an intrusion of magma began underneath Mammoth Mountain. While this intrusion would end up stopping its upward motion, it today releases more than 100 tons of carbon dioxide each day which kill trees on the surface. This intrusion was merely a reminder that Mammoth Mountain is still an active volcano, having last erupted approximately a mere 800 years ago.
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Carbon dioxide overexposure symptoms can be found listed within this file:
[ Ссылка ]
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Sources/Citations:
[1] U.S. Geological Survey
[2] Hildreth, Wes, and Fierstein, Judy, 2016, Eruptive history of Mammoth Mountain and its mafic periphery, California:
U.S. Geological Survey Professional Paper 1812, 128 p., 2 plates, scale 1:24,000,
[ Ссылка ]. The outlines of vents were traced from this source and overlaid onto Google Earth in this video.
[3] J. Ewert, A. Diefenbach, D. Ramsey, "2018 Update to the U.S. Geological Survey National Volcanic Threat Assessment", U.S. Geological Survey, Accessed October 22, 2022. [ Ссылка ]
[4] Source of Volcanic Explosivity Index (VEI) methodology and criteria: Newhall, C. G., and Self, S. (1982), The volcanic explosivity index (VEI) an estimate of explosive magnitude for historical volcanism, J. Geophys. Res., 87(C2), 1231–1238, doi:10.1029/JC087iC02p01231. Accessed / Read by Youtube.com/GeologyHub on Oct 5th, 2022.
0:00 Mammoth Mountain Volcano
1:59 Hazard Rating
2:34 Geologic Setting
3:32 Geologic History
4:20 Central Edifice
4:51 Recent Eruptions
