On April 23rd, the largest earthquake to strike Missouri in 25 years occurred. Registering in as a magnitude 4.0, this quake's occurrence was related to a near half a billion year old geologic feature. Specifically, the Reelfoot Rift, which is a part of the New Madrid Seismic Zone. Thumbnail Photo Credit: Google Earth, Image Landsat / Copernicus, Image NOAA. This image was overlaid with text, and then overlaid with GeologyHub made graphics (the image border & the GeologyHub logo). A special thanks to the EarthquakeSim YouTube channel for granting me permission to use clips of his footage! Video Sources from the EarthquakeSim YouTube channel: [1] https://www.youtube.com/watch?v=Jy_4G7ig5Gw Subscribe to EarthquakeSim at: https://www.youtube.com/@EarthquakeSim 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 4.0: https://creativecommons.org/licenses/by/4.0/legalcode Sources/Citations: [1] U.S. Geological Survey [2] Iris.edu Reelfoot Rift animation, https://www.iris.edu/hq/inclass/animation/new_madrid_region_geologic_history_in_cross_section_1435270837, CC BY 4.0. 0:00 Missouri Earthquake 0:18 Simulated Shaking 0:46 Seismic Hazard 1:18 Reelfoot Rift 2:56 Fault Type