Glen Canyon Sandstone (Upper Triassic-Lower Jurassic; near Elephant Toes Butte, Dinosaur National Monument, Utah, USA) 2 : 無料・フリー素材/写真
Glen Canyon Sandstone (Upper Triassic-Lower Jurassic; near Elephant Toes Butte, Dinosaur National Monument, Utah, USA) 2 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Sandstone in the Mesozoic of Utah, USA.This is an outcrop of eolian sandstones in Dinosaur National Monument, Utah. It's locally called the Glen Canyon Sandstone, but it's the same unit as the Navajo Sandstone (elsewhere, it's called the Nugget Sandstone). The Navajo/Nugget/Glen Canyon is a thick quartzose sandstone succession with abundant cross-bedding. Cross-bedding refers to tilted layers between horizontal layers, and forms in a one-directional current by wind or water (in this case, wind). The sandstone is part of a sand dune deposit in an ancient, vast desert, or "sand sea", technically called an "erg".Stratigraphy: Glen Canyon Sandstone, Upper Triassic-Lower JurassicLocality: near Elephant Toes Butte (view from Cub Creek Road), Dinosaur National Monument, northern Uintah County, northeastern Utah, USA------------See info. at:en.wikipedia.org/wiki/Dinosaur_National_Monument |
| 撮影日 | 2012-06-09 15:36:27 |
| 撮影者 | James St. John |
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