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File:Scoriaceous basalt (Holocene; Kilauea Volcano, Hawaii, USA) 2 (33377520028).jpg

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Scoriaceous basalt from the Holocene of Hawaii, USA. (~4.5 centimeters across at its widest)

Mt. Kilauea is the world’s most active volcano. It sits atop the Hawaii Hotspot in the central Pacific Ocean. It had a decades-long eruption from 1983 to 2018. Kilauea lavas are basaltic in composition, but the physical appearance of Kilauea’s output varies tremendously. Many of Kilauea’s ongoing basaltic eruptions have occurred along its East Rift Zone, a fracture system extending ~eastward from the summit vent area.

Scoriaceous basalt is a mafic, frothy-textured, light-weight, extrusive igneous rock. It forms by cooling of basalt lava that is rich in dissolved gases.

Locality: vintage specimen from an unrecorded/undisclosed site on Hawaii, USA
Date
Source Scoriaceous basalt (Holocene; Kilauea Volcano, Hawaii, USA) 2
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@N05/33377520028 (archive). It was reviewed on 10 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

10 October 2019

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Date/TimeThumbnailDimensionsUserComment
current00:22, 10 October 2019Thumbnail for version as of 00:22, 10 October 20192,050 × 2,132 (3.11 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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