| Vast laminated diatom mat deposits from the west low-latitude Pacific Ocean in the last glacial period | |
Zhai Bin1,2; Li TieGang1 ; Chang FengMing1; Cao QiYuan1
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| 2009-12-01 | |
| 发表期刊 | CHINESE SCIENCE BULLETIN
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| ISSN | 1001-6538 |
| 卷号 | 54期号:23页码:4529-4533 |
| 文章类型 | Article |
| 摘要 | Diatoms are one of the predominant contributors to global carbon fixation by accounting for over 40% of total oceanic primary production and dominate export production. They play a significant role in marine biogeochemistry cycle. The diatom mat deposits are results of vast diatoms bloom. By analysis of diatom mats in 136 degrees 00'-140 degrees 00'E, 15 degrees 00'-21 degrees 00'N, Eastern Philippines Sea, we identified the species of the diatoms as giant Ethmodiscus rex (Wallich) Hendey. AMS (14)C dating shows that the sediments rich in diatom mats occurred during 16000-28600 a B.P., which means the bloom mainly occurred during the last glacial period, while there are no diatom mat deposits in other layers. Preliminary analysis indicates that Antarctic Intermediate Water (AAIW) expanded northward and brought silicate-rich water into the area, namely, silicon leakage processes caused the bloom of diatoms. In addition, the increase of iron input is one of the main reasons for the diatom bloom.; Diatoms are one of the predominant contributors to global carbon fixation by accounting for over 40% of total oceanic primary production and dominate export production. They play a significant role in marine biogeochemistry cycle. The diatom mat deposits are results of vast diatoms bloom. By analysis of diatom mats in 136 degrees 00'-140 degrees 00'E, 15 degrees 00'-21 degrees 00'N, Eastern Philippines Sea, we identified the species of the diatoms as giant Ethmodiscus rex (Wallich) Hendey. AMS C-14 dating shows that the sediments rich in diatom mats occurred during 16000-28600 a B.P., which means the bloom mainly occurred during the last glacial period, while there are no diatom mat deposits in other layers. Preliminary analysis indicates that Antarctic Intermediate Water (AAIW) expanded northward and brought silicate-rich water into the area, namely, silicon leakage processes caused the bloom of diatoms. In addition, the increase of iron input is one of the main reasons for the diatom bloom. |
| 关键词 | Diatom Mats West Pacific Ocean Ams(14)c Dating Last Glacial Period Aaiw |
| 学科领域 | Multidisciplinary Sciences |
| DOI | 10.1007/s11434-009-0447-1 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000272622100036 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/3730 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Zhai Bin,Li TieGang,Chang FengMing,et al. Vast laminated diatom mat deposits from the west low-latitude Pacific Ocean in the last glacial period[J]. CHINESE SCIENCE BULLETIN,2009,54(23):4529-4533. |
| APA | Zhai Bin,Li TieGang,Chang FengMing,&Cao QiYuan.(2009).Vast laminated diatom mat deposits from the west low-latitude Pacific Ocean in the last glacial period.CHINESE SCIENCE BULLETIN,54(23),4529-4533. |
| MLA | Zhai Bin,et al."Vast laminated diatom mat deposits from the west low-latitude Pacific Ocean in the last glacial period".CHINESE SCIENCE BULLETIN 54.23(2009):4529-4533. |
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