Stromatolites (Chencha Formation, Ediacaran, Neoproterozoic, 580 Ma; central Siberian Craton, Russia) : 無料・フリー素材/写真
Stromatolites (Chencha Formation, Ediacaran, Neoproterozoic, 580 Ma; central Siberian Craton, Russia) / 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 | Stromatolites from the Precambrian of Russia. (public display, Yakutsk Public Unified Museum of History & Northern Folk Culture, Yakutsk, Siberia, Russia)Stromatolites are large, layered structures built up by mats of cyanobacteria. Stromatolites vary in appearance, ranging from slightly wrinkled horizontal laminations in sedimentary rocks to low mounds to prominent mounds to columnar structures and other forms.Stromatolites are most common in the Proterozoic fossil record. They are scarce today, but famous modern examples occur at Shark Bay, Western Australia.Stratigraphy: apparently derived from the Chencha Formation, upper Zhuya Group, Vendian (Ediacaran), upper Neoproterozoic, ~580 MaLocality: possibly derived from the Patom Upland, Siberia, Russia------------------------See info. at:en.wikipedia.org/wiki/Stromatolite |
| 撮影日 | 2008-08-02 02:40:27 |
| 撮影者 | James St. John |
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