The Supereruption in Hong Kong; The High Island Caldera скачать в хорошем качестве

The Supereruption in Hong Kong; The High Island Caldera

Hong Kong was once the site of a supereruption. In fact, today the modern city literally sits on a portion of this volcano, specifically its magma chamber which can be today seen via numerous granitic rock formations such as Lion Rock. What this magma created was an eruption so large that it left a massive 18 kilometer wide depression in the ground which was nealy 2 kilometers deep. And, this early Cretaceous period eruption left behind more than 20,000 hexagon shape columns which have a peculiar origin. Today's video will discuss this caldera through the perspective of a geologist, which is known as the High Island Caldera. Thumbnail Photo Credit: This work "HighIslandCaldera1", is a derivative of a photo (resized, cropped, text overlay, added GeologyHub made graphics (the image border & the GeologyHub logo)) from "Pegmatitic granite (Mesoproterozoic, 1.36 Ga; Blue Creek East roadcut, Gunnison Uplift, Colorado, USA) 3", by: rheins, (originally posted on Panoramio at now archived link https://web.archive.org/web/201611020..., 2015, Later Posted on Wikimedia Commons by Panoramio upload bot, Photo link: https://commons.wikimedia.org/wiki/Fi..., CC BY 3.0. "HighIslandCaldera1" is used & licensed under CC BY 3.0 by    / geologyhub   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): Public Domain: https://creativecommons.org/publicdom... CC BY 3.0: https://creativecommons.org/licenses/... CC BY 4.0: https://creativecommons.org/licenses/... Sources/Citations: [1] Fang, W.; Gou, G.R.; Cheung, L.T.O.; Fok, L.; Chow, A.S.Y.; Zhang, K. An Investigation of Willingness to Pay for Geopark Management and Conservation: A Case Study of Geotourists in the Greater China Region. Resources 2024, 13, 24. https://doi.org/10.3390/resources1302..., CC BY 4.0. [2] U.S. Geological Survey [3] Alaska Volcano Observatory [4] University of Alaska Fairbanks, Geophysical Institute [5] Alaska Division of Geological & Geophysical Surveys 0:00 Hong Kong Caldera 1:33 Tilted Caldera 2:31 Geologic Setting 3:24 The Supereruption Occurs 4:37 Formation of Hexagonal Columns