Scoria (Middle Pleistocene, 670 ka; Black Rock Volcano, Millard County, Utah, USA) 2 : 無料・フリー素材/写真
Scoria (Middle Pleistocene, 670 ka; Black Rock Volcano, Millard County, Utah, USA) 2 / 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 | Scoria (scoriaceous basalt) with some plagioclase feldspar phenocrysts from the Pleistocene of Utah, USA. (~7.4 cm across at its widest)The reddish-brown coloration is from weathering of mafic minerals (FeMg-bearing).Age: early Middle Pleistocene (sensu traditio), 670 kaLocality: loose piece from the north-northwestern side of Black Rock Volcano, west of the town of Kanosh, southeastern Millard County, western Utah, USA (vicinity of 38° 48' 31.39" North latitude, 112° 29' 16.88" West longitude) |
| 撮影日 | 2016-12-17 01:51:57 |
| 撮影者 | James St. John |
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