K-T boundary clay (Cretaceous-Tertiary boundary, 65 Ma; roadcut along Long Canyon Road, south of Trinidad Lake, southern Colorado, USA) : 無料・フリー素材/写真
K-T boundary clay (Cretaceous-Tertiary boundary, 65 Ma; roadcut along Long Canyon Road, south of Trinidad Lake, southern Colorado, USA) / James St. John
ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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説明 | Cretaceous-Tertiary ("K-T") boundary clay (65 million years) in a coal bed. The K-T boundary clay represents fallout from the impact event that caused a mass extinction of dinosaurs and many other organisms.Locality: roadcut along Long Canyon Road, south of Trinidad Lake, southern Colorado, USA |
撮影日 | 2009-08-01 15:12:39 |
撮影者 | James St. John |
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