The most active volcano in Canada has recently erupted 30 times. Its northern flank is covered by more than 100 square kilometers of young looking lava flows, and pristine vents dot its edifice. Located within a highly remote section of British Columbia, this fascinating volcano has a very long geologic history. Today's video will discuss Mount Edziza, and its fascinating geology. 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 (&/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 [email protected] 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) &/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 Note: Sources 3 & 4 had angled brackets which I had to remove (YouTube descriptions do not allow those characters), so I added links to those sources. Sources/Citations: [1] Lakeman, Thomas & Clague, John & Menounos, Brian & Osborn, Gerald & Jensen, Britta & Froese, Duane. (2008). Holocene tephras in lake cores from northern British Columbia, Canada. Canadian Journal of Earth Sciences. 45. 935-947. 10.1139/E08-035. [2] Reimer, Rudy. (2015). Reassessing the role of Mount Edziza obsidian in northwestern North America. Journal of Archaeological Science: Reports. 44. 10.1016/j.jasrep.2015.04.003. [3] J. G. SOUTHER, R. L. ARMSTRONG, J. HARAKAL; Chronology of the peralkaline, late Cenozoic Mount Edziza Volcanic Complex, northern British Columbia, Canada. GSA Bulletin 1984;; 95 (3): 337–349. doi: https://doi.org/10.1130/0016-7606(1984)95 337:COTPLC 2.0.CO;2 https://pubs.geoscienceworld.org/gsa/gsabulletin/article-abstract/95/3/337/186706/ [4] Edwards, Benjamin & Russell, James. (1999). The northern Cordilleran volcanic province: A northern Basin and Range?. Geology. 27. 243-246. 10.1130/0091-7613(1999)027 0243:NCVPAN 2.3.CO;2. https://pubs.geoscienceworld.org/gsa/geology/article-abstract/27/3/243/188222/ https://pubs.geoscienceworld.org/gsa/geology/article-abstract/27/3/243/188222/ [5] Spooner, Ian & Osborn, G. & Barendregt, René & Irving, E.. (2011). A record of Early Pleistocene glaciation on the Mount Edziza Plateau, northwestern British Columbia. Canadian Journal of Earth Sciences. 32. 2046-2056. 10.1139/e95-158. [6] Earle, Steven & Clague, John. (2024). Geology and Geomorphology. 10.22459/SA.2024.04. [7] EGU22-8641, A. M. Sigurbergsdóttir & M. T. Gudmundsson, https://doi.org/10.5194/egusphere-egu22-8641, EGU General Assembly 2022, CC BY 4.0 [8] 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, 202 [9] VEIs, dates/years, composition, tephra layer name, DRE estimates, and bulk tephra volume estimates for volcanic eruptions shown in this video which were assigned a VEI 4 or larger and are not Mount Edziza are sourced from the LaMEVE database (British Geological Survey © UKRI), https://www2.bgs.ac.uk/vogripa/view/controller.cfc?method=lameve, Used with Permission [10] Glen Fergus, 2015, Article link: http://gergs.net/all_palaeotemps/, Photo link: https://i0.wp.com/gergs.net/wp-content/uploads/2015/06/All_palaeotemps.png, CC BY 4.0 [11] U.S. Geological Survey [12] USGS Denver Library Photographic Collection [13] Shaun H. Woudstra and Britta J.L. Jensen. 2026. Holocene tephrochronology in the Northern Cordilleran Volcanic Province, northwestern British Columbia. Canadian Journal of Earth Sciences. 63: 1-20. https://doi.org/10.1139/cjes-2025-0051 [14] Endress, C. & Edwards, Benjamin & Skilling, Ian & Lloyd, A. & Lamoreaux, K. & Hungerford, Jefferson. (2006). Preliminary Interpretation of Glacial and Glaciofluvial Deposits Associated with 1 Ma Glaciovolcanism of the Ice Peak Formation, Edziza volcanic complex, British Columbia, Canada. AGU Fall Meeting Abstracts. [15] James K. Russell, Benjamin R. Edwards, Glyn Williams-Jones, and Catherine J. Hickson. 2023. Pleistocene to Holocene volcanism in the Canadian Cordillera. Canadian Journal of Earth Sciences. 60(10): 1443-1466. https://doi.org/10.1139/cjes-2023-0065 0:00 Mount Edziza 1:39 Canadian Volcanoes 1:54 Edziza's Edifice 2:46 Geologic Setting 3:25 Geologic History 4:41 Subglacial Vents 5:03 Cinder Cones 6:02 Sheep Track Pumice 6:53 Final Thoughts