Peoria Loess (Upper Pleistocene, 20-22 ka; Loess Plains, south of Maxwell, Nebraska, USA) 9 : 無料・フリー素材/写真
Peoria Loess (Upper Pleistocene, 20-22 ka; Loess Plains, south of Maxwell, Nebraska, USA) 9 / 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 | Loess in the Pleistocene of Nebraska, USA."Loess" refers to wind-blown silt deposits. The silt was usually derived from glacial sediments in ancient rivers that drained melting summertime glaciers during the Pleistocene Ice Age. Some loess deposits consist of silt derived from non-glacial sources. Ancient loess deposits that have been lithified into siltstones are called "paleoloess" or "loessite".Stratigraphy: Peoria Loess, upper Upper Pleistocene, 20-22 kaLocality: exposures along the Tri-County Supply Canal, east of South Cottonwood Road, south of Maxwell, Nebraska, USA |
| 撮影日 | 2011-07-03 20:01:10 |
| 撮影者 | James St. John |
| タグ | |
| 撮影地 |