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Summary
DescriptionVulcanUinkart.jpg
English: Here lava from the Uinkaret volcanic field slops down into the Grand Canyon from its north rim. On the right is Lava Falls, with Vulcan's Throne at the top. The throne is about 73,000 years old. These are among the most recent features of the Grand Canyon. The topmost or newest layers over which the lava flowed — Kaibab Limestone — was laid down in early Permian time, around 290 million years ago. All the rocks below are older, on down to the Vishnu group at the bottom of the canyon, around 1.7 billion years old.
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This image, originally posted to Flickr, was reviewed on 04:48, 21 March 2010 (UTC) by the administrator or reviewerZooFari, who confirmed that it was available on Flickr under the stated license on that date.
Original upload log
The original description page was here. All following user names refer to en.wikipedia.
2008-08-03 01:20 Tillman 1022×477× (996190 bytes) crop original
2008-08-03 01:11 Tillman 1024×683× (554376 bytes) Here lava from the [[Uinkaret Lava Field]] slops down into the Grand Canyon from its north rim. On the right is Lava Falls, with Vulcan's Throne at the top. The throne is about 73,000 years old. These are among the most recent features of the Grand Canyon
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