Framboidal pyrites in cherts of the Laobao Formation, South China: Evidence for anoxic deep ocean in the terminal Ediacaran.
文献类型：期刊论文
| 作者 | Chang HuaJin1,2,3; Chu XueLei1,2; Feng LianJun1,2; Huang Jing1,2,3 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2009-04-01 |
| 卷号 | 25期号:4页码:1001-1007 |
| 关键词 | Pyrite Chert The terminal Ediacaran Redox Paleo-ocean |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | A detailed study of the size distribution of framboidal pyrites in cherts from the Laobao Formation (about 550 similar to 540Ma) at Silikou section in South China was conducted to evaluate the redox state of the terminal Ediacaran deep ocean. Framboidal pyrites are common in the cherts, but infilled framboids and euhedral grains are sparse. Framboids are dispersed in the cherts and show a narrow size range with maximum diameters range from 7.7 to 18 mu m. The mean values of framboidal pyrites diameters in Silikou cherts are less than 5 mu m for the lower seven samples and around 6.5 mu m for the upper three samples. In these chert samples, more than 85% of framboids of the lower seven samples are less than 7 mu m, and around 65% of framboidal pyrites are less than 7 mu m for the upper three samples. In addition, few framboids (fewer than 4%) in most of the chert samples arc > 10 mu m. The small diameters and narrow size range of framboidal pyrites in Silikou cherts are consistent with that formed in euxinic sediments and imply that the terminal Ediacaran deep ocean was mainly anoxic. It is clear that mean values, median values and maximum diameter of framboidal pyrites in Silikou cherts are gradually increased from the lower to the upper section, which may indicate that the terminal Ediacaran deep ocean was gradually oxidized. |
| WOS关键词 | BLACK-SEA ; WATER ; EVOLUTION ; IRON ; OXIDATION ; EMBRYOS ; CARBON ; BASIN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000265945600024 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/70914]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Chang HuaJin |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chang HuaJin,Chu XueLei,Feng LianJun,et al. Framboidal pyrites in cherts of the Laobao Formation, South China: Evidence for anoxic deep ocean in the terminal Ediacaran.[J]. ACTA PETROLOGICA SINICA,2009,25(4):1001-1007. |
| APA | Chang HuaJin,Chu XueLei,Feng LianJun,&Huang Jing.(2009).Framboidal pyrites in cherts of the Laobao Formation, South China: Evidence for anoxic deep ocean in the terminal Ediacaran..ACTA PETROLOGICA SINICA,25(4),1001-1007. |
| MLA | Chang HuaJin,et al."Framboidal pyrites in cherts of the Laobao Formation, South China: Evidence for anoxic deep ocean in the terminal Ediacaran.".ACTA PETROLOGICA SINICA 25.4(2009):1001-1007. |
入库方式： OAI收割
来源：地质与地球物理研究所
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