Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL087165 |
Magnetofossil Abundance and Diversity as Paleoenvironmental Proxies: A Case Study From Southwest Iberian Margin Sediments | |
He, Kuang1,2,3; Pan, Yongxin1,2,3,4 | |
2020-04-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | It is still contentious how the abundance and diversity of magnetofossils reflect varying paleoenvironmental conditions. Here, we apply rock magnetic methods and transmission electron microscopy to identify magnetofossils in the core MD01-2444 from the southwestern Iberian margin during the period 49.6-18.5 ka and 193.8-171.7 ka. Results show a correlation between the biogenic magnetite component and contrasting paleoenvironmental conditions. Specifically, remanence ratio (M-rs/M-s), the ratio of anhysteretic susceptibility (chi(ARM)) to saturation isothermal remanant magnetization (SIRM), fractions of biogenic soft and biogenic hard components (BS + BH), and delta-delta ratio (delta(FC)/delta(ZFC)) have a negative relationship with planktonic delta O-18, suggesting that more magnetofossils existed in sediments during warmer periods. Combining transmission electron microscopy images with paleoenvironmental proxies, we found that the proportions of bullet-shaped magnetofossils increased in a warmer and less oxic environment, while isotropic shapes dominated in cooler and oxic environments. |
英文关键词 | magnetofossil morphology Iberian margin environmental magnetism paleoenvironmental proxy |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000530332600021 |
WOS关键词 | REMANENCE ACQUISITION EFFICIENCY ; ORGANIC-CARBON FLUX ; DEEP-SEA SEDIMENTS ; MAGNETOTACTIC BACTERIA ; RELATIVE PALEOINTENSITY ; MAGNETIC-PROPERTIES ; DETRITAL MAGNETITE ; VARIABILITY ; MORPHOLOGY ; CYCLES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279867 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Paleomagnetism & Geochronol Lab, Key Lab Earth & Planetary Phys, Beijing, Peoples R China; 2.Chinese Acad Sci, France China Joint Lab Evolut & Dev Magnetotact M, Beijing, Peoples R China; 3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China; 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | He, Kuang,Pan, Yongxin. Magnetofossil Abundance and Diversity as Paleoenvironmental Proxies: A Case Study From Southwest Iberian Margin Sediments[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(8). |
APA | He, Kuang,&Pan, Yongxin.(2020).Magnetofossil Abundance and Diversity as Paleoenvironmental Proxies: A Case Study From Southwest Iberian Margin Sediments.GEOPHYSICAL RESEARCH LETTERS,47(8). |
MLA | He, Kuang,et al."Magnetofossil Abundance and Diversity as Paleoenvironmental Proxies: A Case Study From Southwest Iberian Margin Sediments".GEOPHYSICAL RESEARCH LETTERS 47.8(2020). |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[He, Kuang]的文章 |
[Pan, Yongxin]的文章 |
百度学术 |
百度学术中相似的文章 |
[He, Kuang]的文章 |
[Pan, Yongxin]的文章 |
必应学术 |
必应学术中相似的文章 |
[He, Kuang]的文章 |
[Pan, Yongxin]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论