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DOI | 10.1038/NGEO2942 |
Formation of Hadean granites by melting of igneous crust | |
Burnham, A. D.; Berry, A. J. | |
2017-06-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | The oldest known samples of Earth, with ages of up to 4.4Gyr, are detrital zircon grains in meta-sedimentary rocks of the Jack Hills in Australia. These zircons offer insights into the magmas from which they crystallized, and, by implication, igneous activity and tectonics in the first 500 million years of Earth's history, the Hadean eon. However, the compositions of these magmas and the relative contributions of igneous and sedimentary components to their sources have not yet been resolved. Here we compare the trace element concentrations of the Jack Hills zircons to those of zircons from the locality where igneous (I-) and sedimentary (S-) type granites were first distinguished. We show that the Hadean zircons crystallized predominantly from I-type magmas formed by melting of a reduced, garnet-bearing igneous crust. Further, we propose that both the phosphorus content of zircon and the ratio of phosphorus to rare earth elements can be used to distinguish between detrital zircon grains from I-and S-type sources. These elemental discriminants provide a new geochemical tool to assess the relative contributions of primeval magmatism and melting of recycled sediments to the continents over geological time. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402579200017 |
WOS关键词 | RARE-EARTH ELEMENTS ; TRACE-ELEMENT ; JACK HILLS ; AUSTRALIA IMPLICATIONS ; PERALUMINOUS GRANITES ; DETRITAL ZIRCONS ; I-TYPE ; ORIGIN ; HF ; GEOCHRONOLOGY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/34729 |
专题 | 地球科学 气候变化 |
作者单位 | Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 2601, Australia |
推荐引用方式 GB/T 7714 | Burnham, A. D.,Berry, A. J.. Formation of Hadean granites by melting of igneous crust[J]. NATURE GEOSCIENCE,2017,10(6). |
APA | Burnham, A. D.,&Berry, A. J..(2017).Formation of Hadean granites by melting of igneous crust.NATURE GEOSCIENCE,10(6). |
MLA | Burnham, A. D.,et al."Formation of Hadean granites by melting of igneous crust".NATURE GEOSCIENCE 10.6(2017). |
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