File:Xenolith in granite (Acadia National Park, Maine, USA) 3.jpg

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English: Xenoliths are pieces of rock that have fallen from the walls or roof of a cooling magma chamber, or have become entrained in rising masses of magma ("xeno" means "foreign" and "lith" means "rock"). Xenoliths can occur in intrusive igneous rocks or extrusive igneous rocks (= volcanic lava).

Geologic unit: Cadillac Mountain Granite, Silurian-Devonian boundary times, 419 Ma [a 365 Ma date has also been published]

Locality: Acadia National Park, Mt. Desert Island, Maine, USA
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Source https://www.flickr.com/photos/47445767@N05/50085560627/
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@N05/50085560627. It was reviewed on 25 August 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

25 August 2020

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current06:13, 25 August 2020Thumbnail for version as of 06:13, 25 August 20203,008 × 2,000 (4.91 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50085560627/ with UploadWizard

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