Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/ncomms14197 |
Weathering in a world without terrestrial life recorded in the Mesoproterozoic Velkerri Formation | |
Rafiei, Mehrnoush; Kennedy, Martin | |
2019-08-01 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2019 |
卷号 | 10 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Today the terrestrial surface drives biogeochemical cycles on Earth through chemical weathering reactions mediated by the biological influence of soils. Prior to the expansion of life on to land, abiotic weathering may have resulted in different boundary conditions affecting the composition of the biosphere. Here we show a striking difference in weathering produced minerals preserved in the Mesoproterozoic Velkerri Formation. While the bulk chemistry and mineralogy is dominated by illite similar to many modern mudstones, application of a novel microbeam technology reveals that the initial detrital minerals were composed of mica (28%) and feldspar (45%) with only a trace amount (<2%) of typical soil formed clay minerals. The majority of illite and the high Al2O3 fraction previously interpreted as a weathering signal, is present as a replacement of feldspar and mica. These sediments record physical erosion with limited pedogenic clay mineral formation implying fundamentally different weathering pathways. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000478013400009 |
WOS关键词 | MCARTHUR BASIN ; BIOTIC ENHANCEMENT ; NORTHERN-TERRITORY ; ELEMENT CHEMISTRY ; CLAY-MINERALS ; BLACK SHALES ; SOURCE ROCKS ; ROPER GROUP ; CARBON ; EVOLUTION |
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/203235 |
专题 | 资源环境科学 |
作者单位 | Macquarie Univ, Dept Earth & Planetary Sci, Sydney, NSW 2109, Australia |
推荐引用方式 GB/T 7714 | Rafiei, Mehrnoush,Kennedy, Martin. Weathering in a world without terrestrial life recorded in the Mesoproterozoic Velkerri Formation[J]. NATURE COMMUNICATIONS,2019,10. |
APA | Rafiei, Mehrnoush,&Kennedy, Martin.(2019).Weathering in a world without terrestrial life recorded in the Mesoproterozoic Velkerri Formation.NATURE COMMUNICATIONS,10. |
MLA | Rafiei, Mehrnoush,et al."Weathering in a world without terrestrial life recorded in the Mesoproterozoic Velkerri Formation".NATURE COMMUNICATIONS 10(2019). |
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