A large and destructive earthquake struck last night in the Philippines, causing many buildings to collapse, especially on Cebu Island. Registering in as a magnitude 6.9, the earthquake caused the ground to shake back and forth in some areas for nearly a minute. And yet, this did not occur on a major known fault line, instead seemingly originating on a buried fault line previously unknown to science. Today's video will discuss the earthquake and why it occurred through the knowledge & analysis of a geologist. Thumbnail Photo Credit: Google Earth, Image Landsat / Copernicus, Data SIO, NOAA, U.S. Navy, NGA, GEBCO. This image was overlaid with text, and then overlaid with GeologyHub made graphics (the image border & the GeologyHub logo). Note: While today's earthquake technically merely classified as "strong" rather than "major" (M6.0-M6.9 is strong, M7.0-M7.9 is major), I thought its proximity to a M7.0 was close enough to call it a major earthquake. 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=wfrkPiDE9so [2] https://www.youtube.com/watch?v=nQZvfi7778M 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 2.0: https://creativecommons.org/licenses/by/2.0/legalcode Sources/Citations: [1] U.S. Geological Survey [2] Phivolcs 0:00 Destructive Philippines Earthquake 1:50 Buried Fault Line 3:48 Aftershocks 4:17 Geologic Model