File:Pumice from the 13 August 2021 explosive eruption of Fukutoku-Okanoba Volcano (Bonin Islands, western Pacific Ocean) 9.jpg

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English: Pumice is a felsic to intermediate to alkaline, extrusive igneous rock. It has a frothy texture, meaning it has abundant tiny holes that were originally gas bubbles in lava. Most pumice samples are so low-density - so light-weight for their size - that they float in water. The solid parts of pumice are usually glass-rich.

This pumice sample comes from a summer 2021 explosive eruption of the Fukutoku-Okanoba Volcano in the western Pacific Ocean. Fukutoku-Okanoba is a usually-submerged volcano located in the southern Bonin Islands, south of Japan. During and after eruptions, one or more ephemerals islands are present. Fukutoku-Okanoba is a subduction zone volcano in the Izu-Bonin Volcanic Arc. In this area, the Pacific Plate is subducting westward under the Philippines Plate.

This particular eruption occurred during the morning of 13 August 2021. Large quantities of pumice were generated. The pumice floated in the Pacific Ocean for months and washed ashore at various Japanese islands in fall 2021.

Collection site: beach on Yoron Island, Amami Islands, between Japan and Taiwan

Eruption video at: en.wikipedia.org/wiki/Fukutoku-Okanoba#/media/File:Fukuto...

Info at: en.wikipedia.org/wiki/Fukutoku-Okanoba and en.wikipedia.org/wiki/Bonin_Islands and en.wikipedia.org/wiki/Izu–Ogasawara_Trench and

en.wikipedia.org/wiki/Izu–Bonin–Mariana_Arc
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Source https://www.flickr.com/photos/47445767@N05/51999594985/
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/51999594985. It was reviewed on 12 April 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

12 April 2022

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current12:44, 12 April 2022Thumbnail for version as of 12:44, 12 April 20222,454 × 1,968 (3.44 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51999594985/ with UploadWizard

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