Middlebury, Coal Variant : 無料・フリー素材/写真
Middlebury, Coal Variant / SoilScience.info
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Floodplain soil along the North Branch Susquehanna River near Danville, PA. Mapped as Middlebury series (Fluvaquentic Eutrudepts) but with significant accumulations of anthracite coal washings derived from floods during the early 1900s prior to environmental regulations. Note the nice stratification of coal and quartz sand grains due to differences in particle density. |
| 撮影日 | 2017-08-16 10:14:00 |
| 撮影者 | SoilScience.info , Raleigh |
| 撮影地 | |
| カメラ | Canon EOS Rebel T6 , Canon |
| 露出 | 0.033 sec (1/30) |
| 開放F値 | f/3.5 |
| 焦点距離 | 18 mm |