Showing posts with label Zion. Show all posts
Showing posts with label Zion. Show all posts

Sunday, August 18, 2013

Great white throne" ,Zion National Park, ChelseaStarkhttp://www.chelseastarkphotography.com

Via Flickr:
The Great White Throne is a highlight of Zion National Park, itself a world-class showplace of sandstone. The whole edifice consists of the Navajo Sandstone, one of the world's largest sandstone bodies. One of the striking things about the Great White Throne is that while its top is white, its base is red. It is thought that once upon a time the Navajo was a supergiant-class reservoir of petroleum. As the sandstone began to be exposed through erosion, however, the oil and gas escaped, along the way erasing the red sandstone pigments through chemical reduction. This would have been during Cretaceous time, when the atmosphere was extremely high in carbon dioxide compared to today. Whether the massive oxidation of the Navajo oil reservoir and others like it influenced the global atmosphere is an intriguing research problem.

Sunday, March 10, 2013

Zion National Park

Zion" " National Park-ChelseaStark http://www.chelseastarkphotography.com by chelseastarkphotography.com
Zion" " National Park, a photo by chelseastarkphotography.com on Flickr.Follow the paths where ancient native people and pioneers walked. Gaze up at massive sandstone cliffs of cream, pink, and red that soar into a brilliant blue sky. Challenge your courage in a narrow slot canyon. Zion’s unique array of plants and animals will enchant you as you absorb the rich history of the past and enjoy the excitement of present day adventures.

Sunday, February 17, 2013

Great white throne" ,Zion National Park

The Great White Throne is a highlight of Zion National Park, itself a world-class showplace of sandstone. The whole edifice consists of the Navajo Sandstone, one of the world's largest sandstone bodies. One of the striking things about the Great White Throne is that while its top is white, its base is red. It is thought that once upon a time the Navajo was a supergiant-class reservoir of petroleum. As the sandstone began to be exposed through erosion, however, the oil and gas escaped, along the way erasing the red sandstone pigments through chemical reduction. This would have been during Cretaceous time, when the atmosphere was extremely high in carbon dioxide compared to today. Whether the massive oxidation of the Navajo oil reservoir and others like it influenced the global atmosphere is an intriguing research problem.