File:Amygdaloidal basalt 6.jpg

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English: Amygdaloidal basalt is a vesicular basalt that has had the original vesicles (gas bubbles in lava) subsequently filled with secondary minerals.

Stratigraphy: unrecorded (but possibly eroded from the Portage Lake Volcanic Series, Bergland Group, middle Keweenawan Supergroup, upper Mesoproterozoic, 1.093 to 1.097 Ga)

Locality: water-worn clast from an unrecorded site (but possibly from the shoreline of Lake Superior)
Date
Source https://www.flickr.com/photos/47445767@N05/50420373972/
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@N05/50420373972. It was reviewed on 8 October 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

8 October 2020

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current15:09, 8 October 2020Thumbnail for version as of 15:09, 8 October 20203,419 × 2,523 (6.29 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50420373972/ with UploadWizard

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