Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1900325116 |
A productivity collapse to end Earth's Great Oxidation | |
Hodgskiss, Malcolm S. W.1; Crockford, Peter W.2,3; Peng, Yongbo4; Wing, Boswell A.5; Horner, Tristan J.6,7 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:35页码:17207-17212 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Israel; Peoples R China |
英文摘要 | It has been hypothesized that the overall size of-or efficiency of carbon export from-the biosphere decreased at the end of the Great Oxidation Event ( GOE) ( ca. 2,400 to 2,050 Ma). However, the timing, tempo, and trigger for this decrease remain poorly constrained. Here we test this hypothesis by studying the isotope geochemistry of sulfate minerals from the Belcher Group, in subarctic Canada. Using insights from sulfur and barium isotope measurements, combined with radiometric ages from bracketing strata, we infer that the sulfate minerals studied here record ambient sulfate in the immediate aftermath of the GOE ( ca. 2,018 Ma). These sulfate minerals captured negative triple-oxygen isotope anomalies as low as similar to -0.8 parts per thousand. Such negative values occurring shortly after the GOE require a rapid reduction in primary productivity of > 80%, although even larger reductions are plausible. Given that these data imply a collapse in primary productivity rather than export efficiency, the trigger for this shift in the Earth system must reflect a change in the availability of nutrients, such as phosphorus. Cumulatively, these data highlight that Earth's GOE is a tale of feast and famine: A geologically unprecedented reduction in the size of the biosphere occurred across the end-GOE transition. |
英文关键词 | Proterozoic primary productivity Great Oxidation Event triple-oxygen isotopes nutrient limitation |
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:000483396800017 |
WOS关键词 | SULFUR ISOTOPE FRACTIONATION ; ATMOSPHERIC OXYGEN ; TRIPLE OXYGEN ; BELCHER GROUP ; CARBON-CYCLE ; SULFATE ; CONSTRAINTS ; RECORD ; GEOCHEMISTRY ; BACTERIAL |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/205167 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Stanford Univ, Dept Geol Sci, Stanford, CA 94305 USA; 2.Weizmann Inst Sci, Dept Earth & Planetary Sci, IL-761000 Rehovot, Israel; 3.Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA; 4.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Jiangsu, Peoples R China; 5.Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA; 6.Woods Hole Oceanog Inst, Nontradit Isotope Res Various Adv Novel Applicat, Woods Hole, MA 02543 USA; 7.Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA |
推荐引用方式 GB/T 7714 | Hodgskiss, Malcolm S. W.,Crockford, Peter W.,Peng, Yongbo,et al. A productivity collapse to end Earth's Great Oxidation[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(35):17207-17212. |
APA | Hodgskiss, Malcolm S. W.,Crockford, Peter W.,Peng, Yongbo,Wing, Boswell A.,&Horner, Tristan J..(2019).A productivity collapse to end Earth's Great Oxidation.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(35),17207-17212. |
MLA | Hodgskiss, Malcolm S. W.,et al."A productivity collapse to end Earth's Great Oxidation".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.35(2019):17207-17212. |
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