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File:Peridotite mantle xenolith in basalt (near Mount Trumbull, Arizona, USA) (40590968485).jpg

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Peridotite mantle xenolith in basalt lava from Arizona, USA. (public display, Geology Department, Wittenberg University, Springfield, Ohio, USA)

The greenish-colored mass is a sample of mantle rock. It's a xenolith nodule in basalt lava that was erupted from a volcano. The rock was plucked from deep wall rocks during the ascent of magma during the Late Pleistocene. The xenolith itself is peridotite, an olivine-rich, ultramafic, intrusive igneous rock. Peridotite has a phaneritic texture (= coarsely-crystalline) and formed by slow cooling.

Locality: unrecorded/undisclosed site near Mount Trumbull, Arizona, USA
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Source Peridotite mantle xenolith in basalt (near Mount Trumbull, Arizona, USA)
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@N05/40590968485 (archive). It was reviewed on 9 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

9 October 2019

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Date/TimeThumbnailDimensionsUserComment
current06:17, 9 October 2019Thumbnail for version as of 06:17, 9 October 20193,407 × 2,483 (5.54 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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