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The Double Impact Crater in Canada; The Clearwater Craters

One of the most spectacular pair of impact craters on the planet is located within Northern Quebec in Canada. This area contains two immediately adjacent impact craters which are known as the Clearwater Craters craters. Each of these structures measures more than 20 kilometers or 13 miles wide and are located within a remote section of tundra. Despite their proximity, they formed in separate impact events more than 150 million years apart from one another. This video will discuss when these double impact craters formed, and what effects their impacts caused. Thumbnail Photo Credit: Google Earth, Image Landsat / Copernicus. This image was overlaid with text, and then overlaid with GeologyHub made graphics (the image border, the orange dotted buried impact crater outline, and the GeologyHub logo). Estimates on asteroid diameter, velocity, tnt energy equivalent, frequency of a similar magnitude asteroid/comet impact event, and effects from the impact (including earthquake magnitude generated and wind speeds generated) in this video were sourced using the calculator at https://impact.ese.ic.ac.uk/ImpactEar..., which was used with permission. 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 2.0: https://creativecommons.org/licenses/... CC BY 3.0: https://creativecommons.org/licenses/... CC BY 4.0: https://creativecommons.org/licenses/... Sources/Citations: [1] Schmidt, Gerhard. (2020). Rhodium - a long ignored element in cosmo- and geochemistry. [2] McDonald, I. (2002), Clearwater East impact structure: A re-interpretation of the projectile type using new platinum-group element data from meteorites. Meteoritics & Planetary Science, 37: 459-464. https://doi.org/10.1111/j.1945-5100.2... [3] G. Collins & others, "A numerical assessment of simple airblast models of impact...", Meteoritics & Planetary Science, https://doi.org/10.1111/maps.12873 (2017), CC BY 4.0 0:00 Double Impact Craters 1:51 Argon Dating 2:33 Ordovician Meteor Event 2:57 First Impact 3:51 Second Impact 4:44 Inner Ring Formation