Precambrian-Pennsylvanian nonconformity (Red Rocks Park, west of Denver, Colorado, USA) 1 : 無料・フリー素材/写真
Precambrian-Pennsylvanian nonconformity (Red Rocks Park, west of Denver, Colorado, 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 |
|---|---|
| 説明 | The rocks below the geologist's right hand are granitic gneisses and migmatites of the Idaho Springs Formation (late Paleoproterozoic, 1.7 billion years). The rocks above that are tilted, hematite-rich conglomerates, arkoses, and sandstones of the Fountain Formation (Pennsylvanian-Permian). 1.4 billion years of missing time are repesented at the unconformity. |
| 撮影日 | 2007-07-26 10:39:57 |
| 撮影者 | James St. John |
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