File:Gabbro (Duluth Complex, Mesoproterozoic, 1099 Ma; near Duluth, Minnesota, USA) 1.jpg
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| Description |
English: Gabbro from the Precambrian of Minnesota, USA.
Gabbro is a mafic, phaneritic, intrusive igneous rock composed principally of plagioclase feldspar and pyroxene. This gabbro specimen is from the widespread Duluth Complex, a ~1.1 billion year old suite of igneous rocks in northeastern Minnesota that is associated with volcanism in the Lake Superior segment of the ancient Mid-Continent Rift System. Geologic unit: Duluth Complex, late Mesoproterozoic, 1099 Ma Locality: undisclosed / unrecorded locality at or near Duluth, northeastern Minnesota, USA |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/52148718990/ |
| 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@N05/52148718990. It was reviewed on 19 June 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:49, 19 June 2022 | | 3,319 × 2,560 (6.87 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/52148718990/ with UploadWizard |
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