File:Grand Canyon National Park Muav Ledges 0501 (7705972158).jpg

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Muav ledges in Roaring Springs Canyon off the North Kaibab Trail in Grand Canyon National Park. NPS Photo by Kristen M. Caldon Muav Limestone: thickness: 350-600 ft.

Deposited 505 million years ago during the Middle Cambrian period, the Muav Limestone is mostly composed of limestone and dolomite. It forms grey to orange cliffs within the Canyon.

At the time the Muav Limestone was deposited, the water level had risen further and the Grand Canyon region would have been covered by a warm, shallow, subtropical sea, closely resembling the Bahamas of today.

Fossils in the Muav include sponges, stromatolites, and echinoderms.

Many springs emerge from the Muav Limestone. Springs are locations where groundwater naturally emerges at the Earth’s surface.

Here water emerges because it can’t trickle down through the Bright Angel Formation below, which is an aquaclude.
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Source Grand Canyon National Park: Muav Ledges 0501
Author Grand Canyon National Park

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This image was originally posted to Flickr by Grand Canyon NPS at https://flickr.com/photos/50693818@N08/7705972158. It was reviewed on 20 April 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

20 April 2020

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current18:26, 20 April 2020Thumbnail for version as of 18:26, 20 April 20203,619 × 2,439 (2.28 MB)Killarnee (talk | contribs)Transferred from Flickr via #flickr2commons

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