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| DOI | 10.1126/science.aaz9266 |
| A 35-million-year record of seawater stable Sr isotopes reveals a fluctuating global carbon cycle | |
| Paytan A.; Griffith E.M.; Eisenhauer A.; Hain M.P.; Wallmann K.; Ridgwell A. | |
| 发表日期 | 2021 |
| ISSN | 0036-8075 |
| 起始页码 | 1346 |
| 结束页码 | 1350 |
| 卷号 | 371期号:6536 |
| 英文摘要 | Changes in the concentration and isotopic composition of the major constituents in seawater reflect changes in their sources and sinks. Because many of the processes controlling these sources and sinks are tied to the cycling of carbon, such records can provide insights into what drives past changes in atmospheric carbon dioxide and climate. Here, we present a stable strontium (Sr) isotope record derived from pelagic marine barite. Our d88/86Sr record exhibits a complex pattern, first declining between 35 and 15 million years ago (Ma), then increasing from 15 to 5 Ma, before declining again from ~5 Ma to the present. Numerical modeling reveals that the associated fluctuations in seawater Sr concentrations are about ±25% relative to present-day seawater. We interpret the d88/86Sr data as reflecting changes in the mineralogy and burial location of biogenic carbonates. © 2021 American Association for the Advancement of Science. All rights reserved. |
| 英文关键词 | barium sulfate; calcium carbonate; carbon; carbon dioxide; sea water; strontium; strontium 86; strontium 87; unclassified drug; carbon cycle; concentration (composition); global change; historical record; isotopic composition; seawater; source-sink dynamics; stable isotope; strontium isotope; temporal variation; alkalinity; Article; carbon cycle; carbon cycling; climate; controlled study; Holocene; mineralogy; Miocene; Pleistocene; priority journal; steady state; temperature sensitivity |
| 语种 | 英语 |
| 来源期刊 | Science
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/245018 |
| 作者单位 | Institute of Marine Science, University of California Santa Cruz, Santa Cruz, CA 95064, United States; School of Earth Sciences, The Ohio State University, Columbus, OH 43210, United States; GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, 24148, Germany; Department of Earth Sciences and Planetary Sciences, University of California Riverside, Riverside, CA 92521, United States |
| 推荐引用方式 GB/T 7714 | Paytan A.,Griffith E.M.,Eisenhauer A.,et al. A 35-million-year record of seawater stable Sr isotopes reveals a fluctuating global carbon cycle[J],2021,371(6536). |
| APA | Paytan A.,Griffith E.M.,Eisenhauer A.,Hain M.P.,Wallmann K.,&Ridgwell A..(2021).A 35-million-year record of seawater stable Sr isotopes reveals a fluctuating global carbon cycle.Science,371(6536). |
| MLA | Paytan A.,et al."A 35-million-year record of seawater stable Sr isotopes reveals a fluctuating global carbon cycle".Science 371.6536(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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