The Active Volcano in California; The Long Valley Caldera

The single most explosive volcano removed literal mountains in a single eruption. This is what occurred at the Long Valley Caldera in a catastrophic eruption in the distant past, but today this complex is still considered as active. Two magmatic intrusions in the 1980s and ground deformation are reminders that this volcano is likely to erupt again one day. This video will discuss the Long Valley Caldera volcano's impressive geologic history and discuss where its next eruption is most likely to occur. If you would like to support this channel, consider using one of the following links: (Patreon: http://patreon.com/geologyhub) (YouTube membership: https://www.youtube.com/channel/UCYeGh5VML5XPr5jYnzh3J6g/join) (Gemstone & Mineral Etsy store: http://prospectingarizona.etsy.com) (GeologyHub Merch Etsy store: http://geologyhub.etsy.com) Google Earth imagery used in this video: ©Google & Data Providers This video is protected under "fair use". If you see an image and/or video which is your own in this video, and/or think my discussion of a scientific paper (and/or discussion/mentioning of the data/information within a scientific paper) does not fall under the fair use doctrine, and wish for it to be censored or removed, contact me by email at geologyhubyt@gmail.com and I will make the necessary changes. Various licenses used in sections of this video (not the entire video, this video as a whole does not completely fall under one of these licenses) and/or in this video's thumbnail image (and this list does not include every license used in this video and/or thumbnail image): Public Domain: https://creativecommons.org/publicdomain/mark/1.0/ CC BY 4.0: https://creativecommons.org/licenses/by/4.0/legalcode 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, http://dx.doi.org/10.3133/pp1812. 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. https://pubs.usgs.gov/sir/2018/5140/sir20185140.pdf [4] Wes Hildreth, Judy Fierstein, Andrew Calvert, Early postcaldera rhyolite and structural resurgence at Long Valley Caldera, California, Journal of Volcanology and Geothermal Research, Volume 335, 2017, Pages 1-34, ISSN 0377-0273, https://doi.org/10.1016/j.jvolgeores.2017.01.005. (https://www.sciencedirect.com/science/article/pii/S0377027316303092) [5] Ashton F. Flinders, David R. Shelly, Philip B. Dawson, David P. Hill, Barbara Tripoli, Yang Shen; Seismic evidence for significant melt beneath the Long Valley Caldera, California, USA. Geology 2018;; 46 (9): 799–802. doi: https://doi.org/10.1130/G45094.1 [6] Alaska Volcano Observatory [7] University of Alaska Fairbanks, Geophysical Institute [8] Alaska Division of Geological & Geophysical Surveys 0:00 Long Valley Caldera 2:08 An Unusual Volcano 3:15 Hazard Rating 4:35 Rhyolite Eruptions 5:09 "Recent" Eruptions