File:Grand Canyon National Park Geologic Fireplace 2788 (7403739458).jpg
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The Bright Angel Lodge (1935) History Room features the work of Santa Fe Railroad's architect Mary Colter. Take a closer look at the room’s stone fireplace. Notice how its’ tall, sloping outlines mirror the temples seen within the canyon. Known as the “Geologic Fireplace,” it’s a classic example of Colter’s artistic sensibility and her extraordinary attention to detail. The layered stones of her design were put together in the same geological sequence as the rock found along the Bright Angel trail - from river to rim. Stacked on each side of the hearth is a collection of water-worn Colorado River cobbles. The base of the fireplace consists of dark-colored Vishnu Schist. This granite-veined rock – dated at around 1.7 billion years old – forms the very basement of the North American continent. The next layer of rock represents the Grand Canyon Supergroup –sedimentary and volcanic rocks ranging in age from 800 million to 1.2 billion years old; their tilted appearance caused by the separation of ancient continents. Above the fireplace opening is a distinctive layer of flat-lying sedimentary rocks that give the Grand Canyon its “stairstep” appearance and date from half a million to 250 million years in age. Some of the youngest rocks are found at the top of the fireplace. That band of light-colored stone completes the geologic timeline of the Grand Canyon. Known as the Kaibab Formation, this limestone rock is a mere 270 million years old and is visible along much of the canyon’s rim. With the assistance of the park’s Chief Naturalist, Edwin McKee, Mary Colter had all of the stone gathered or cut from the canyon's walls and hauled up by pack mules. The Bright Angel History Room, also features books and maps about the Grand Canyon and the Southwest, as well as a fascinating collection of Fred Harvey and Harvey Girls memorabilia, information about Bright Angel architect Mary Colter, and an original carriage from the days when visitors took carriage rides along the rim. NPS Photo by Michael Quinn Learn more about the historic Bright Angel Lodge here: <a href="http://www.grandcanyonlodges.com/bright-angel-lodge-408.html" rel="nofollow">www.grandcanyonlodges.com/bright-angel-lodge-408.html</a> |
| Date | |
| Source | Grand Canyon National Park: Geologic Fireplace 2788 |
| Author | Grand Canyon National Park |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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This image was originally posted to Flickr by Grand Canyon NPS at https://flickr.com/photos/50693818@N08/7403739458. 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. |
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| current | 17:48, 20 April 2020 | | 4,928 × 3,264 (4.25 MB) | Killarnee (talk | contribs) | Transferred from Flickr via #flickr2commons |
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