Filamentous cyanobacteria fossils and their significance in the Permian-Triassic boundary section at Laolongdong, Chongqing
文献类型：期刊论文
| 作者 | Jiang HongXia; Wu YaSheng; Cai ChunFang |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2008-06-01 |
| 卷号 | 53期号:12页码:1871-1879 |
| 关键词 | microbial fossil end-Permian Permian-Triassic boundary cyanobacteria Rivularia |
| ISSN号 | 1001-6538 |
| DOI | 10.1007/s11434-008-0172-1 |
| 文献子类 | Article |
| 英文摘要 | The microbial communities blooming immediately after the end-Permian mass extinction represent abnormally extreme environments, and vary in different areas. In this study, filamentous cyanobacterial biota was found in the strata after the extinction in the famous Permian-Triassic boundary section at Laolongdong, Chongqing, southwest China. In thin sections, the filamentous cyanobacterial fossils are below 1 mm in length, and generally taper to one end, with the widest diameter up to 0.08 mm. Some of them are curved, indicating that they are soft in life. Their walls are composed of cryptocrystalline to microcrystalline calcites. The filaments have round cross section, and are internally filled with micrites and fine sparry calcites, which indicate that the filaments are originally empty. They are randomly distributed in the rocks, but in some places, they tend to be distributed in radial pattern. The filamentous organisms are morphologically similar to Rivularia of Rivulariaceae, Cyanobacteria Phylum, but with calcified sheaths, and are tentatively regarded as an indeterminate new species in Rivularia: Rivularia sp. Cyanobacteria are photosynthetic autotrophic, and can survive in dysoxic condition. The blooming of this organism and the absence of other organisms may indicate that the environment was oxygendeficient and shallow, since this photosynthetic autotrophic organism needed to live within photic zone. |
| WOS关键词 | SOUTH CHINA ; MASS EXTINCTION ; PALEOENVIRONMENTAL SIGNIFICANCE ; SICHUAN PROVINCE ; OCEANIC CONDITIONS ; NANPANJIANG BASIN ; BRACHIOPODS ; MOUNTAINS ; PATTERNS ; SURVIVAL |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000256963000013 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/69516]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wu YaSheng |
| 作者单位 | Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang HongXia,Wu YaSheng,Cai ChunFang. Filamentous cyanobacteria fossils and their significance in the Permian-Triassic boundary section at Laolongdong, Chongqing[J]. CHINESE SCIENCE BULLETIN,2008,53(12):1871-1879. |
| APA | Jiang HongXia,Wu YaSheng,&Cai ChunFang.(2008).Filamentous cyanobacteria fossils and their significance in the Permian-Triassic boundary section at Laolongdong, Chongqing.CHINESE SCIENCE BULLETIN,53(12),1871-1879. |
| MLA | Jiang HongXia,et al."Filamentous cyanobacteria fossils and their significance in the Permian-Triassic boundary section at Laolongdong, Chongqing".CHINESE SCIENCE BULLETIN 53.12(2008):1871-1879. |
入库方式： OAI收割
来源：地质与地球物理研究所
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