Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aau5784 |
Nitrogen isotope evidence for expanded ocean suboxia in the early Cenozoic | |
Kast, Emma R.1; Stolper, Daniel A.2,3; Auderset, Alexandra4,5; Higgins, John A.1; Ren, Haojia6; Wang, Xingchen T.7; Martinez-Garcia, Alfredo4; Haug, Gerald H.4,5; Sigman, Daniel M.1 | |
2019-04-26 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 364期号:6438页码:386-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany; Switzerland; Taiwan |
英文摘要 | The million-year variability of the marine nitrogen cycle is poorly understood. Before 57 million years (Ma) ago, the N-15/N-14 ratio (delta N-15) of foraminifera shell-bound organic matter from three sediment cores was high, indicating expanded water column suboxia and denitrification. Between 57 and 50 Ma ago, delta N-15 declined by 13 to 16 per mil in the North Pacific and by 3 to 8 per mil in the Atlantic. The decline preceded global cooling and appears to have coincided with the early stages of the Asia-India collision. Warm, salty intermediate-depthwater forming along the Tethys Seamargins may have caused the expanded suboxia, ending with the collision. From 50 to 35 Ma ago, delta N-15 was lower than modern values, suggesting widespread sedimentary denitrification on broad continental shelves. delta N-15 rose at 35 Ma ago, as ice sheets grew, sea level fell, and continental shelves narrowed. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000465643400047 |
WOS关键词 | ORGANIC REFERENCE MATERIALS ; SEA-SURFACE TEMPERATURES ; SALINE BOTTOM WATER ; TETRAETHER LIPIDS ; MEMBRANE-LIPIDS ; PACIFIC-OCEAN ; OXYGEN ; NITRATE ; MATTER ; TEX86 |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/201303 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Princeton Univ, Dept Geosci, Princeton, NJ 08540 USA; 2.Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA; 3.Lawrence Berkeley Natl Lab, Earth & Environm Sci Area, Berkeley, CA 94720 USA; 4.Max Planck Inst Chem, Dept Climate Geochem, D-55128 Mainz, Germany; 5.Swiss Fed Inst Technol, Dept Earth Sci, CH-8092 Zurich, Switzerland; 6.Natl Taiwan Univ, Res Ctr Future Earth, Taipei 106, Taiwan; 7.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA |
推荐引用方式 GB/T 7714 | Kast, Emma R.,Stolper, Daniel A.,Auderset, Alexandra,et al. Nitrogen isotope evidence for expanded ocean suboxia in the early Cenozoic[J]. SCIENCE,2019,364(6438):386-+. |
APA | Kast, Emma R..,Stolper, Daniel A..,Auderset, Alexandra.,Higgins, John A..,Ren, Haojia.,...&Sigman, Daniel M..(2019).Nitrogen isotope evidence for expanded ocean suboxia in the early Cenozoic.SCIENCE,364(6438),386-+. |
MLA | Kast, Emma R.,et al."Nitrogen isotope evidence for expanded ocean suboxia in the early Cenozoic".SCIENCE 364.6438(2019):386-+. |
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