In mere moments, the landscape forever changed in a section of Washington. A major landslide occurred due to an earthquake, causing the damming and then formation of a brand new lake. This is the story of Lena Lake, as told by a geologist. Thumbnail Photo Credit: This work "LenaLake1", is a derivative of a photo (resized, cropped, increased image color saturation, increased image brightness in darker & shadowed areas, text overlay, overlaid with GeologyHub made graphics (the image border & the GeologyHub logo)) from "Lower Lena Lake again", by: Benjamin Hollis, ben.hollis, dalangalma, 2012, Posted on Flickr, Flickr account link: https://www.flickr.com/photos/dalangalma/, Photo link: https://www.flickr.com/photos/dalangalma/8295629829/, CC BY 2.0. "LenaLake1" is used & licensed under CC BY 2.0 by Youtube.com/GeologyHub I want to note that the earthquake magnitudes and dates for earthquakes mentioned in this video could be quite incorrect. 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 [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) 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 2.0: https://creativecommons.org/licenses/by/2.0/legalcode Sources/Citations: [1] U.S. Geological Survey [2] Richard J. Blakely, Brian L. Sherrod, Jonathan F. Hughes, Megan L. Anderson, Ray E. Wells, Craig S. Weaver; Saddle Mountain fault deformation zone, Olympic Peninsula, Washington: Western boundary of the Seattle uplift. Geosphere 2009;; 5 (2): 105–125. doi: https://doi.org/10.1130/GES00196.1 [3] Gomberg, J., Sherrod, B.L., Weaver, C., and Frankel, A., 2010, A magnitude 7.1 earthquake in the Tacoma Fault Zone— A plausible scenario for the southern Puget Sound region, Washington: U.S. Geological Survey Fact Sheet 2010-3023, 4 p., https://doi.org/10.3133/fs20103023. [4] Alan R. Nelson, Stephen F. Personius, Ray E. Wells, Elizabeth R. Schermer, Lee‐Ann Bradley, Jason Buck, Nadine Reitman; Holocene Earthquakes of Magnitude 7 during Westward Escape of the Olympic Mountains, Washington. Bulletin of the Seismological Society of America 2017;; 107 (5): 2394–2415. doi: https://doi.org/10.1785/0120160323 [5] Goldfinger, Chris & Nelson, C. & Morey, Ann & Johnson, Joel & Patton, Jason & Karabanov, E. & Gutiérrez-Pastor, J. & Eriksson, Andrew & Gràcia, Eulàlia & Dunhill, G. & Enkin, Randolph & Dallimore, A. & Vallier, T.. (2012). Turbidite event history—Methods and implications for Holocene paleoseismicity of the Cascadia subduction zone. USGS professional paper. 1661-F. 184 pp.. [6] Polenz, Michael; Contreras, T. A.; Czajkowski, J. L.; Legorreta Paulin, Gabriel; Miller, B. A.; Martin, M. E.; Walsh, T. J.; Logan, R. L.; Carson, R. J.; Johnson, C. N.; Skov, R. H.; Mahan, S. A.; Cohan, C. R., 2010, Supplement to geologic maps of the Lilliwaup, Skokomish Valley, and Union 7.5-minute quadrangles, Mason County, Washington—Geologic setting and development around the Great Bend of Hood Canal: Washington Division of Geology and Earth Resources Open File Report 2010-5, 27 p. 0:00 Lena Lake Landslide 2:22 Regional Fault Lines 3:23 MMI Discussion