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Image: Multiple Igneous Intrusion Phases Kosterhavet Sweden

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Description: An igneous intrusion cut by a pegmatite dyke, which in turn is cut by a dolerite dyke. These rocks are of Precambrian (Proterozoic) age and they are located in Kosterhavet National Park on Yttre Ursholmen island in the Koster Islands in Sweden. The oldest igneous rocks in this photo show features caused by magma mingling or magma mixing.
Title: Multiple Igneous Intrusion Phases Kosterhavet Sweden
Credit: https://www.flickr.com/photos/geologicalsurveyofsweden/5128430135/in/set-72157625147499901
Author: Thomas Eliasson of Geological Survey of Sweden https://www.flickr.com/people/geologicalsurveyofsweden/
Usage Terms: Creative Commons Attribution 2.0
License: CC BY 2.0
License Link: https://creativecommons.org/licenses/by/2.0
Attribution Required?: Yes

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