File:Grand Canyon National Park Colorado River Runners 2804 (6177013790).jpg
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(3000 x 4000) Several rafts from a boating party pass below a sheer cliff of Vishnu schist near the confluence of the Colorado River and Bright Angel Creek at the very bottom of the Grand Canyon. NPS photo by Michael Quinn. There are three different river trip opportunities through Grand Canyon National Park. Learn more: <a href="http://www.nps.gov/grca/planyourvisit/whitewater-rafting.htm" rel="nofollow">www.nps.gov/grca/planyourvisit/whitewater-rafting.htm</a> Grand Canyon's "basement rock" formed 1.8 billion years ago when the North American continent collided with an ancient chain of volcanic islands, much like today’s Hawaiian Islands. Intense heat and pressure from the collision formed the metamorphic rock called Vishnu Schist. From deep under the earth’s surface, molten rock flowed up as magma between the cracks of the Vishnu Schist. As the flowing magma cooled and hardened, it formed igneous rock called Zoroaster Granite. Because of the extreme heat and pressure that folded and changed the metamorphic rock, it is hard to find any fossils in the basement rocks. |
| Date | |
| Source | Grand Canyon National Park: Colorado River Runners 2804 |
| Author | Grand Canyon National Park |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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This image was originally posted to Flickr by Grand Canyon NPS at https://flickr.com/photos/50693818@N08/6177013790. It was reviewed on 21 November 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 20:41, 21 November 2020 | | 3,000 × 4,000 (2.83 MB) | Tm (talk | contribs) | Transferred from Flickr via #flickr2commons |
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