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File:Entablature of the Overhanging Cliff Flow (Junction Butte Basalt, Upper Pliocene, 2.01-2.15 Ma; northeastern Yellowstone National Park, Wyoming, USA) 1 (19223238163).jpg

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Basalt lava flow in the Pliocene of Wyoming, USA.

This is a famous outcrop of the middle portions of a thick basalt lava flow in the northeastern portion of Yellowstone National Park. Many basalt lava flows have or include regularly-spaced, vertical fractures called columnar jointing. The above photo shows basalt having an irregular fracture pattern - this is called the entablature.

Stratigraphy: Overhanging Cliff Flow, Junction Butte Basalt, Upper Pliocene, 2.01-2.15 Ma

Locality: roadside exposure along Grand Loop Road just north of Tower Falls, northeastern Yellowstone National Park, Wyoming, USA (44° 53' 49.06" North, 110° 23' 22.20" West)
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Source Entablature of the Overhanging Cliff Flow (Junction Butte Basalt, Upper Pliocene, 2.01-2.15 Ma; northeastern Yellowstone National Park, Wyoming, 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@N05/19223238163 (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 20194,000 × 3,000 (3.92 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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