Stromatolitic limestone (Chencha Formation, upper Neoproterozoic, 580 Ma; Patom Upland, Siberia, Russia) 7 : 無料・フリー素材/写真
Stromatolitic limestone (Chencha Formation, upper Neoproterozoic, 580 Ma; Patom Upland, Siberia, Russia) 7 / 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 | Stromatolitic limestone from the Precambrian of Russia. (Cranbrook Institute of Science collection, Bloomfield Hills, Michigan, USA)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: Chencha Formation, upper Zhuya Group, Vendian (Ediacaran), upper Neoproterozoic, ~580 MaLocality: apparently derived from the Patom Upland, Siberia, Russia------------------------See info. at:en.wikipedia.org/wiki/Stromatolite |
| 撮影日 | 2015-05-02 10:27:44 |
| 撮影者 | James St. John |
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