The Supervolcano in Namibia; Messum Crater скачать в хорошем качестве

The Supervolcano in Namibia; Messum Crater

The site of one of Earth's largest single explosive volcanic eruptions to have ever occurred is located in an often forgotten about patch of desert. Here, Messum Crater represents the remains of this ancient long extinct supervolcano which erupted all the way back during the early Cretaceous period. This video will briefly discuss this massive caldera, which is sometimes incorrectly mistaken as an impact crater. Thumbnail Photo Credit: Google Earth, Image Landsat / Copernicus. This image was overlaid with text in addition to 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 geologyhubyt@gmail.com 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: CC BY 4.0: https://creativecommons.org/licenses/... Sources/Citations: [1] A Ewart, S.C Milner, A.R Duncan, M Bailey, The Cretaceous Messum igneous complex, S.W. Etendeka, Namibia: reinterpretation in terms of a downsag-cauldron subsidence model, Journal of Volcanology and Geothermal Research, Volume 114, Issues 3–4, 2002, Pages 251-273, ISSN 0377-0273, https://doi.org/10.1016/S0377-0273(01.... (https://www.sciencedirect.com/science...) [2] Milner, Simon C. and Anthony Ewart. “The geology of the Goboboseb Mountain volcanics and their relationship to the Messum Complex, Namibia.” (2014). [3] Ewart, A. & MILNER, S. & Armstrong, Richard & Duncan, A.. (1998). Etendeka Volcanism of the Goboboseb Mountains and Messum Igneous Complex, Namibia. Part I: Geochemical Evidence of Early Cretaceous Tristan Plume Melts and the Role of Crustal Contamination in the Parana-Etendeka CFB. Journal of Petrology. 39. 10.1093/petroj/39.2.191. [4] Glen Fergus, 2015, Article link: http://gergs.net/all_palaeotemps/, Photo link: https://i0.wp.com/gergs.net/wp-conten..., CC BY 4.0 Note: This source was used to estimate the temperature in ancient northern Namibia 130 million years ago. 0:00 Messum Crater 1:24 Flood Basalts 2:22 Volcanic Progression 3:05 Major Eruptions