Six magnitude 4 and 3 range earthquakes, including a M4.5 struck close offshore of Crimea in Ukraine on Monday. The reason why this occurred is quite fascinating, as a narrow stretch of the Black Sea is actually one of the highest seismic hazard areas in all of Ukraine. Today's video discusses these June 22nd 2026 earthquakes, why they occurred, along with the far larger 1927 earthquake sequence. 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] Starostenko, V. & Rusakov, Oleg & Pashkevich, Inna & Kutas, R.I. & Makarenko, Irina & Legostaeva, O.V. & Lebed, T. & Savchenko, A.. (2017). Heterogeneous structure of the lithosphere in the Black Sea from a multidisciplinary analysis of geophysical fields. Geofizicheskiy Zhurnal. 37. 3-28. 10.24028/gzh.0203-3100.v37i2.2015.111298. CC BY 4.0. [3] Yegorova, T. & Gobarenko, Valentina. (2010). Structure of the Earth's crust and upper mantle of the West- and East-Black Sea Basins revealed from geophysical data and its tectonic implications. Geological Society of London Special Publications. 340. 23-42. 10.1144/SP340.3. [4] Anatoly M. Nikishin, Maxim V. Korotaev, Andrey V. Ershov, Marie-Françoise Brunet, The Black Sea basin: tectonic history and Neogene–Quaternary rapid subsidence modelling, Sedimentary Geology, Volume 156, Issues 1–4, 2003, Pages 149-168, ISSN 0037-0738, https://doi.org/10.1016/S0037-0738(02)00286-5. (https://www.sciencedirect.com/science/article/pii/S0037073802002865) [5] Bayrak, Yusuf & Irmak, Tahir Serkan & Doğan, Bülent & Cinar, Hakan & Yılmaz, Şeyda & Kalafat, Doğan & Karakaş, Ahmet & Bayrak, Erdem. (2013). A Preliminary Results of Fault Plane Solutions of the Recent Earthquakes in and Around Eastern Black Sea Region. 10.3997/2214-4609.20131732. [6] Nakapelyukh, M. & Belskyy, Volodymyr & Ratschbacher, L.. (2018). Geometry and Cenozoic evolution of the Crimean fold-thrust belt from cross-section balancing and kinematic forward modeling. Geofizicheskiy Zhurnal. 40. 12-29. 10.24028/gzh.0203-3100.v40i2.2018.128877. CC BY 4.0. 0:00 Crimea Earthquakes 0:49 1927 Earthquakes 1:49 Isostasy 2:12 Geologic Setting 3:07 Fault Line