Mineralogy of sediments in the Mariana Trench controlled by environmental conditions of the West Pacific since the Last Glacial Maximum
文献类型：期刊论文
| 作者 | Lai, Weibo2,3; Liu, Xiting1,2; Tian, Jiwei5; Wang, Houjie1,2; Zhang, Jin4; Huang, Jie1,4; Wan, Shiming1,4 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 245页码:10 |
| ISSN号 | 1367-9120 |
| 关键词 | Mariana Trench Paleoclimate Mineralogy Clay mineral Last Glacial Maximum |
| DOI | 10.1016/j.jseaes.2023.105553 |
| 通讯作者 | Liu, Xiting(liuxiting@ouc.edu.cn) |
| 英文摘要 | The trench represents an important sink of sediments as a result of the "funneling effect", however, the mineralogy of trench sediments and its response to environmental conditions is still not well understood. To fill this knowledge gap, we present a 3.2-m-long sedimentary record of core MT03, which was collected from the southern slope of the "Challenger Deep" in the Mariana Trench at a water depth of 8300 m. The results document that the minerals in the bulk sediments mainly include quartz, feldspar, mica, pyrite, apatite, and clay minerals. The clay minerals are mainly composed of smectite and illite, which are respectively derived from volcanic matter and Asian aeolian dust. At the bottom of the core, the increased aeolian input, which is reflected by high illite/smectite ratios, led to the blooming of diatoms and the formation of laminated diatom mats during the Last Glacial Maximum. During this period, the anaerobic oxidation of abundant organic matter led to an anoxic environment in the sediment where the authigenic pyrite precipitated. In the middle and upper sections of the core, the decrease in contents of organic carbon and authigenic pyrite indicates that the sedimentary environ-ment became oxic, which is attributed to low productivity caused by reduced input of the aeolian dust in the deglacial period and Holocene. Therefore, our new findings indicate that the mineralogy of trench sediments is sensitive to the evolution of paleoclimate and paleoceanography, providing a new perspective to study the environmental evolution of the West Pacific. |
| WOS关键词 | LAMINATED DIATOM MATS ; ELEMENT GEOCHEMISTRY ; ORGANIC-MATTER ; SOUTH ; CLAY ; ACCUMULATION ; PRODUCTIVITY ; PHOSPHORUS ; ATLANTIC ; MANTLE |
| 资助项目 | National Natural Science Foundation of China[91858203] ; National Natural Science Foundation of China[41976053] ; National Natural Science Foundation of China[42276060] ; Natural Science Foundation of Shandong Province[ZR2021YQ26] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000924348100001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/183479]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Liu, Xiting |
| 作者单位 | 1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 2.Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Technol, Minist Educ, Qingdao 266100, Peoples R China 3.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 5.Ocean Univ China, Key Lab Phys Oceanog, Minist Educ, Qingdao 266100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lai, Weibo,Liu, Xiting,Tian, Jiwei,et al. Mineralogy of sediments in the Mariana Trench controlled by environmental conditions of the West Pacific since the Last Glacial Maximum[J]. JOURNAL OF ASIAN EARTH SCIENCES,2023,245:10. |
| APA | Lai, Weibo.,Liu, Xiting.,Tian, Jiwei.,Wang, Houjie.,Zhang, Jin.,...&Wan, Shiming.(2023).Mineralogy of sediments in the Mariana Trench controlled by environmental conditions of the West Pacific since the Last Glacial Maximum.JOURNAL OF ASIAN EARTH SCIENCES,245,10. |
| MLA | Lai, Weibo,et al."Mineralogy of sediments in the Mariana Trench controlled by environmental conditions of the West Pacific since the Last Glacial Maximum".JOURNAL OF ASIAN EARTH SCIENCES 245(2023):10. |
入库方式： OAI收割
来源：海洋研究所
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