File:Basalt gravel in tidal pool (Yaquina Head, Oregon, USA).jpg

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English: This is a tidal pool along a rocky shoreline at Yaquina Head, Oregon. The bedrock flooring the tidal pools in the area is the Ginkgo Basalt, one of many lava flows in the Miocene-aged Columbia River Flood Basalt. The black clasts in this tidal pool have eroded from the Ginkgo Basalt.

Flood basalts are vast outpourings of lava from one or more large fractures in the crust. This rare type of volcanism is not occurring on Earth at present, but ancient flood basalt provinces that can be examined - for example, the latest Cretaceous-aged Deccan Traps of India and the latest Permian Siberian Traps of Russia. Flood lavas are also known on Mercury, Venus, and the Moon.

Locality: tidal pool on the southern side of Yaquina Head, coastal Oregon, USA


Info. at:

www.usgs.gov/observatories/cvo/columbia-river-basalt-grou...
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Source https://www.flickr.com/photos/47445767@N05/53269410505/
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@N05/53269410505. It was reviewed on 25 October 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

25 October 2023

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current17:37, 25 October 2023Thumbnail for version as of 17:37, 25 October 20234,288 × 2,848 (8.73 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53269410505/ with UploadWizard

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