Скачать с ютуб The Geologic Oddity in Mauritania; The Eye of the Sahara в хорошем качестве

The Geologic Oddity in Mauritania; The Eye of the Sahara

What you are looking at is a massive circular feature within Mauritania. It is a truly beautiful geologic oddity largely only visible from satellite. Known as the "Eye of the Sahara", it is a spectacular 45 kilometer or 28 mile wide feature which contrasts with the overall coloration of the surrounding landscape. It formed approximately 100 million years ago due to a series of geologic events. This video will discuss this spectacular feature and describe how it formed. Thumbnail Photo Credit: NASA, JSC (Johnson Space Center), https://images.nasa.gov/details/iss04.... This image was cropped, color enhanced, overlaid with text, and 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:   / geologyhub  ) (YouTube membership:    / @geologyhub  ) (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): CC BY 4.0: https://creativecommons.org/licenses/... Sources/Citations: [1] U.S. Geological Survey [2] El Houssein Abdeina, Fred Jourdan, Gilles Chazot, Hervé Bertrand, Bernard Le Gall, How old is the Eye of Africa? A polyphase history for the igneous Richat Structure, Mauritania, Lithos, Volumes 482–483, 2024, 107698, ISSN 0024-4937, https://doi.org/10.1016/j.lithos.2024.... (https://www.sciencedirect.com/science.... CC BY 4.0. [3] Taylor, C.D., ed., 2015, Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II) phase V: U.S. Geological Survey Open-File Report 2013‒1280, 20 chaps., pages variable, pls. variable, http://dx.doi.org/10.3133/ofr20131280. [In English and French.] [4] Bradley, D.C., Motts, H.A., Horton, J.D., Giles, Stuart, and Taylor, C.D., 2015, Geologic map of Mauritania (phase V, deliverables 51a, 51b, and 51c), chap. A1 of Taylor, C.D., ed., Second projet de renforcement institutionnel du secteur minier de la Republique Islamique de Mauritania (PRISM-II): U.S. Geological Survey Open-File Report 2013-1280-A1, 3 pl., http://dx.doi.org/10.3133/ofr20131280. [In English and French]. [5] NASA [6] JSC (Johnson Space Center) [7] Correia, P., Murphy, J.B. Iberian-Appalachian connection is the missing link between Gondwana and Laurasia that confirms a Wegenerian Pangaea configuration. Sci Rep 10, 2498 (2020). https://doi.org/10.1038/s41598-020-59..., CC BY 4.0. 0:00 Eye of the Sahara 0:36 Not an Impact Crater 1:07 200 Million Years Ago 2:49 101 Million Years Ago 3:14 Phonolite Magma 3:29 Uplift and Formation