Mt. Moran (Teton Range, Grand Teton National Park, Wyoming, USA) 1 : 無料・フリー素材/写真
Mt. Moran (Teton Range, Grand Teton National Park, Wyoming, USA) 1 / 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 | Northwestern Wyoming's 45 mile long, north-south oriented Teton Range is dominated by Archean-aged igneous and metamorphic rocks. The flat-floored valley on its eastern side is Jackson Hole Valley, where the equivalent Archean rocks are at a considerable depth underground. The Teton Range and Jackson Hole Valley are separated by a major normal fault called the Teton Fault, which has experienced about 30,000 feet worth of offset.The mountain seen here is Mt. Moran. The subvertically-oriented black stripe is a Proterozoic-aged (~1.3 Ga) igneous dike composed of diabase (microgabbro). At the summit of Mt. Moran, directly above the diabase dike, is a thin cover of Cambrian-aged sedimentary rocks - the Flathead Sandstone. The basal Flathead contact is a major unconformity that is correlative with the "Great Unconformity" near the top of the Inner Gorge at Grand Canyon National Park in Arizona. |
| 撮影日 | 2015-07-12 13:08:33 |
| 撮影者 | James St. John |
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