India might have a forgotten active volcano, and this is despite the fact a ship's crew reported seeing a volcano erupt in 1757 offshore of Puducherry. So, how credible is this report, and is there another explanation? Today's video attempts to answer whether a true volcano does exist there via the perspective and analysis of a geologist. Thumbnail Photo Credit: Google Earth, Image Landsat / Copernicus, Data SIO, NOAA, U.S. Navy, GEBCO. This image was overlaid with text, and then 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: 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 4.0: https://creativecommons.org/licenses/by/4.0/legalcode Sources/Citations: [1] "The Annual Register 1758" (page 92) [2] Dave, Harshavardhan & Mazumder, Subhobroto & Pangtey, K & Tep, Blecy & Mitra, D.. (2013). Delineation of prospective area in Palar offshore based on analysis of natural seepage model in Cauvery offshoreDelineation of prospective area in Palar offshore based on analysis of natural seepage model in Cauvery offshore. [3] Takeuchi, S., Ishige, K., Uesawa, S. et al. Unsinkable, long-drifting, millimeter-sized pumice of the 2021 eruption of Fukutoku-Oka-no-Ba submarine volcano. Prog Earth Planet Sci 11, 47 (2024). https://doi.org/10.1186/s40645-024-00652-9, CC BY 4.0. [4] S., Susanth & Kurian, John & C M, Bijesh & Damodharan, Twinkle & Tyagi, Abhishek & Sivaramakrishnan, Rajan. (2021). Controls on the evolution of submarine canyons in steep continental slopes: geomorphological insights from Palar Basin, southeastern margin of India. Geo-Marine Letters. 41. 10.1007/s00367-021-00685-9. [5] Longhinos, Biju. 1757AD Felsic Volcanism off Pondicherry Coast - Fact or Fiction? 0:00 A Geologic Mystery 0:50 Historical Report 2:04 Eruption Composition Discussion 3:14 Rift Setting 4:03 Mud Volcano Possibility