Recently, a series of more than 1,000 earthquakes occurred underneath Lake Tahoe which surprisingly were caused by an intrusion of magma. This occurred beneath the northern part of the lake, rising multiple miles through the crust. Today's video will discuss this unusual intrusion of magma that occurred in 2003, and discuss its possible link to either regional faults or a nearby volcanic field thought to be extinct. Thumbnail Photo Credit: U.S. Geological Survey, Hawaiian Volcano Observatory, Public Domain, https://www.usgs.gov/media/images/kilauea-volcano-lava-flowing-around-channel-islands. This image was overlaid with text, and then overlaid with GeologyHub made graphics (the image border & the GeologyHub logo). 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 CC BY 4.0: https://creativecommons.org/licenses/by/4.0/legalcode Sources/Citations: [1] U.S. Geological Survey [2] Kortemeier, Winifred & Calvert, Andrew & Moore, James & Schweickert, Richard. (2018). Pleistocene volcanism and shifting shorelines at Lake Tahoe, California. Geosphere. 14. 10.1130/GES01551.1. [3] David H. von Seggern, Kenneth D. Smith, Leiph A. Preston; Seismic Spatial-Temporal Character and Effects of a Deep (25–30 km) Magma Intrusion below North Lake Tahoe, California–Nevada. Bulletin of the Seismological Society of America 2008;; 98 (3): 1508–1526. doi: https://doi.org/10.1785/0120060240 [4] "Pleistocene volcanism and shifting shorelines at Lake Tahoe, California", https://www.usgs.gov/news/pleistocene-volcanism-and-shifting-shorelines-lake-tahoe-california https://pubmed.ncbi.nlm.nih.gov/15297623/ [5] Shehata, M.A., Mizunaga, H. Moho depth and tectonic implications of the western United States: insights from gravity data interpretation. Geosci. Lett. 9, 23 (2022). https://doi.org/10.1186/s40562-022-00233-y, CC BY 4.0. 0:00 Lake Tahoe Earthquakes 0:31 Magma Intrusion 2:20 1st Magma Intrusion 2:53 2nd Magma Intrusion 3:26 Basin & Range Province 4:18 Volcanic Field