Great Unconformity : 無料・フリー素材/写真
Great Unconformity / brewbooks
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
|---|---|
| 説明 | There is about a 1.2 billion year gap in the rock - that is the Great Unconformity,, and this hike provided an excellent view."Powell's unconformity in the Grand Canyon is between the Tapeats Sandstone of Middle or Lower Cambrian Age, about 500 million years ago, and igneous and metamorphic rock of the Statherian Period of the Paleoproterozoic Eon, around 1700 million years old, give or take a few hundred million years, with a gap of over a billion years. Source en.wikipedia.org/wiki/Great_UnconformityStratigraphy and TimescaleClear Creek trail, Grand Canyon National Parkgc 322 |
| 撮影日 | 2010-09-19 20:26:19 |
| 撮影者 | brewbooks , near Seattle, USA |
| タグ | |
| 撮影地 | Arizona, United States 地図 |
| カメラ | Canon EOS 40D , Canon |
| 露出 | 0.002 sec (1/500) |
| 開放F値 | f/8.0 |
| 焦点距離 | 70 mm |
