File:Black Onaping impact breccia (1.85 Ga, Paleoproterozoic; Sudbury Impact Structure, Ontario, Canada) (14610075467).jpg
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| Description |
Black Onaping Impact Breccia from the Sudbury Impact Structure in Ontario, Canada. (field of view: 3.7 centimeters across) This attractive black impact breccia is part of a thick succession of impact breccias associated with the 1.85 billion year old Sudbury Impact Structure of southern Ontario, Canada. The rock is carbon-rich, which accounts for its blackish color. Several published studies have determined that the unusual carbon molecule C60 (buckminsterfullerene, or “buckyball”) is present in these rocks. The Sudbury Impact Structure is the 2nd-largest preserved impact crater on Earth. The impact crater is gigantic, but is no longer circular. Tectonic collision and regional metamorphism during the Precambrian have deformed the impact structure into an ellipsoidal shape. |
| Date | |
| Source | Black Onaping impact breccia (1.85 Ga, Paleoproterozoic; Sudbury Impact Structure, Ontario, Canada) |
| 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@N05/14610075467 (archive). It was reviewed on 10 October 2019 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 | 01:12, 10 October 2019 | | 1,180 × 888 (241 KB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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