Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1618245114 |
Pyrite sulfur isotopes reveal glacial-interglacial environmental changes | |
Pasquier, Virgil1; Sansjofre, Pierre1; Rabineau, Marina1; Revillon, Sidonie1,2; Houghton, Jennifer3; Fike, David A.3 | |
2017-06-06 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:23页码:5941-5945 |
文章类型 | Article |
语种 | 英语 |
国家 | France; USA |
英文摘要 | The sulfur biogeochemical cycle plays a key role in regulating Earth's surface redox through diverse abiotic and biological reactions that have distinctive stable isotopic fractionations. As such, variations in the sulfur isotopic composition (delta S-34) of sedimentary sulfate and sulfide phases over Earth history can be used to infer substantive changes to the Earth's surface environment, including the rise of atmospheric oxygen. Such inferences assume that individual delta S-34 records reflect temporal changes in the global sulfur cycle; this assumption may be well grounded for sulfate-bearing minerals but is less well established for pyrite-based records. Here, we investigate alternative controls on the sedimentary sulfur isotopic composition of marine pyrite by examining a 300-m drill core of Mediterranean sediments deposited over the past 500,000 y and spanning the last five glacial-interglacial periods. Because this interval is far shorter than the residence time of marine sulfate, any change in the sulfur isotopic record preserved in pyrite (delta S-34(pyr)) necessarily corresponds to local environmental changes. The stratigraphic variations (>76 parts per thousand) in the isotopic data reported here are among the largest ever observed in pyrite, and are in phase with glacial-interglacial sea level and temperature changes. In this case, the dominant control appears to be glacial-interglacial variations in sedimentation rates. These results suggest that there exist important but previously overlooked depositional controls on sedimentary sulfur isotope records, especially associated with intervals of substantial sea level change. This work provides an important perspective on the origin of variability in such records and suggests meaningful paleoenvironmental information can be derived from pyrite delta S-34 records. |
英文关键词 | pyrite sulfur isotopes glacial interglacial sedimentation rate local environment changes |
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:000402703800051 |
WOS关键词 | ORDOVICIAN MASS EXTINCTION ; SOUTH CHINA ; SEA-LEVEL ; ORGANIC-CARBON ; MEDITERRANEAN SEA ; SULFATE REDUCTION ; MARINE-SEDIMENTS ; YANGTZE PLATFORM ; REDOX CONDITIONS ; VARIABILITY |
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/204725 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Bretagne Occidentale, Inst Univ Europeen Mer, UMR CNRS 6538, Lab Geosci Ocean, F-29280 Plouzane, France; 2.Inst Univ Europeen Mer, SEDISOR, F-29280 Plouzane, France; 3.Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63130 USA |
推荐引用方式 GB/T 7714 | Pasquier, Virgil,Sansjofre, Pierre,Rabineau, Marina,et al. Pyrite sulfur isotopes reveal glacial-interglacial environmental changes[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(23):5941-5945. |
APA | Pasquier, Virgil,Sansjofre, Pierre,Rabineau, Marina,Revillon, Sidonie,Houghton, Jennifer,&Fike, David A..(2017).Pyrite sulfur isotopes reveal glacial-interglacial environmental changes.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(23),5941-5945. |
MLA | Pasquier, Virgil,et al."Pyrite sulfur isotopes reveal glacial-interglacial environmental changes".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.23(2017):5941-5945. |
条目包含的文件 | 条目无相关文件。 |
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