Distribution and isotopic composition of foraminifera at cold-seep Site 973-4 in the Dongsha area, northeastern South China Sea
文献类型：期刊论文
| 作者 | Zhang, Bidong3,4; Pan, Mengdi3,4; Wu, Daidai3,4 ; Wu, Nengyou1,2
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| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2018-12-01 |
| 卷号 | 168页码:145-154 |
| 关键词 | Foraminifera Assemblage Stable isotopes Cold seep The South China Sea |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/j.jseaes.2018.05.007 |
| 通讯作者 | Wu, Daidai(wudd@ms.giec.ac.cn) |
| 英文摘要 | A 1375-cm-long gravity core (Site 973-4) was acquired from the Dongsha cold seep area of the northeastern South China Sea (SCS). We measured its stable isotopes of planktonic foraminifera and investigated benthic foraminiferal assemblage compositions. Accelerator mass spectrometry C-14 analysis of planktonic foraminifera shows that some intervals are dated to Marine Isotope Stage (MIS) 3. Pulleniatina obliquiloculata has positive delta C-13 (0.25-1.25 parts per thousand) except for a negative carbon isotopic excursion (up to delta C-13 = 1.15 parts per thousand), but its light -carbon sources remain elusive. The benthic delta C-13 values (Uvigerina) of non -seep and cold-seep boreholes from the SCS have no systematic difference. Therefore, the benthic delta C-13 at Site 973-4 did not record the enhanced seepage activities (if occurred) during the last sea-level lowstand in the Dongsha area. In the pre-Holocene sediments, the foraminiferal assemblages have lower diversities, Shannon-Wiener indices, evenness indices, Simpson indices and higher calcareous proportions like typical cold-seep settings. The changes in oxygen levels (lower in the glacial period than those in the Holocene) indicated by foraminiferal indices reflect either bottom-water oxygen variations on the glacial-interglacial scale or enhanced seepage activities during the last glacial period. |
| WOS关键词 | ORGANIC-CARBON FLUX ; LIVING BENTHIC FORAMINIFERA ; DEEP-WATER PALEOCEANOGRAPHY ; MODERN METHANE SEEPS ; CONTINENTAL-SLOPE ; COMMUNITY STRUCTURE ; DISSOLVED-OXYGEN ; HYDROCARBON-SEEP ; ADRIATIC SEA ; INDIAN-OCEAN |
| 资助项目 | National Natural Science Foundation of China[41273022] ; CNPC-CAS science and technology cooperation project[2015A-4813] ; China Geological Survey[GHZ2012006003] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000452945000015 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China ; CNPC-CAS science and technology cooperation project ; China Geological Survey |
| 源URL | [http://ir.giec.ac.cn/handle/344007/29801]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Wu, Daidai |
| 作者单位 | 1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China 2.Minist Land & Resources, Key Lab Gas Hydrate, Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Bidong,Pan, Mengdi,Wu, Daidai,et al. Distribution and isotopic composition of foraminifera at cold-seep Site 973-4 in the Dongsha area, northeastern South China Sea[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,168:145-154. |
| APA | Zhang, Bidong,Pan, Mengdi,Wu, Daidai,&Wu, Nengyou.(2018).Distribution and isotopic composition of foraminifera at cold-seep Site 973-4 in the Dongsha area, northeastern South China Sea.JOURNAL OF ASIAN EARTH SCIENCES,168,145-154. |
| MLA | Zhang, Bidong,et al."Distribution and isotopic composition of foraminifera at cold-seep Site 973-4 in the Dongsha area, northeastern South China Sea".JOURNAL OF ASIAN EARTH SCIENCES 168(2018):145-154. |
入库方式： OAI收割
来源：广州能源研究所
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