File:Scoriaceous basalt (Fillmore Craters, Holocene; Black Rock Desert, due west of Fillmore, Sevier Desert, west-central Utah, USA) 1 (14849872737).jpg

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Scoriaceous basalt (7.0 cm across)

The “Black Rock Desert”, due west of Fillmore in west-central Utah’s Sevier Desert, has some nice basalt lava flows. The rocks shown here are from the Holocene-aged Fillmore Craters volcanics (<10,000 years old). The lavas are pretty rough & jagged. The rocks themselves range from lightweight scoriaceous basalts to heavier vesicular basalts. The surface morphologies of the scorias show that many formed by stretching of slightly cooled, slightly sticky lava - this can be seen at active aa lava fronts in Hawaii.
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Source Scoriaceous basalt (Fillmore Craters, Holocene; Black Rock Desert, due west of Fillmore, Sevier Desert, west-central Utah, USA) 1
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@N05/14849872737 (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
current00:14, 10 October 2019Thumbnail for version as of 00:14, 10 October 20193,008 × 2,000 (2.22 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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