Potassium isotopes trace the formation of juvenile continental crust
文献类型：期刊论文
| 作者 | Gamaleldien, Hamed2,3; Wang, Kun5; Johnson, Tim E.1,2,3,6; Ma, Jian-Feng4,7; Abu Anbar, Mohamed8; Zhang, Xinmu J.4,5; Olierook, Hugo K. H.1,3,6; Kirkland, Christopher L.1,3,6 |
| 刊名 | GEOSCIENCE FRONTIERS
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 15期号:6页码:6 |
| 关键词 | Potassium isotopes Plagiogranites Arabian-Nubian Shield Neoproterozoic Crustal growth |
| ISSN号 | 1674-9871 |
| DOI | 10.1016/j.gsf.2024.101882 |
| 英文摘要 | Constraining the processes associated with the formation of new (juvenile) continental crust from mantle-derived (basaltic) sources is key to understanding the origin and evolution of Earth's landmasses. Here we present high-precision measurements of stable isotopes of potassium (K) from Earth's most voluminous plagiogranites, exposed near El-Shadli in the Eastern Desert of Egypt. These plagiogranites exhibit a wide range of 641K values (-0.31%0 +/- 0.06%0 to 0.36%0 +/- 0.05%0; 2 SE, standard error) that are significantly higher (isotopically heavier) than mantle values (-0.42%0 +/- 0.08%0). Isotopic (87Sr/86Sr and 143Nd/144Nd) and trace element data indicate that the large variation in 641K was inherited from the basaltic source rocks of the El-Shadli plagiogranites, consistent with an origin through partial melting of hydrothermally-altered mid-to-lower oceanic crust. These data demonstrate that K isotopes have the potential to better constrain the source of granitoid rocks and thus the secular evolution of the continental crust. (c) 2024 China University of Geosciences (Beijing) and Peking University. Published by Elsevier B.V. on behalf of China University of Geosciences (Beijing). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001267720700001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78267]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Gamaleldien, Hamed |
| 作者单位 | 1.Curtin Univ, John de Laeter Ctr, Perth, Australia 2.Khalifa Univ, Coll Engn & Phys Sci, Dept Earth Sci, Abu Dhabi, U Arab Emirates 3.Curtin Univ, Sch Earth & Planetary Sci, GPOB U1987, Perth, WA 6845, Australia 4.Washington Univ, Dept Earth Environm & Planetary Sci, St Louis, MO 63130 USA 5.Washington Univ, McDonnell Ctr Space Sci, St. Louis, MO 63130 USA 6.Curtin Univ, Sch Earth & Planetary Sci, Timescales Mineral Syst Grp, Perth, WA, Australia 7.Chinese Acad Sci, Key Lab Mineral & Metallogeny, Guangzhou Inst Geochem, Guangzhou, Peoples R China 8.Tanta Univ, Fac Sci, Geol Dept, Tanta 31527, Egypt |
| 推荐引用方式 GB/T 7714 | Gamaleldien, Hamed,Wang, Kun,Johnson, Tim E.,et al. Potassium isotopes trace the formation of juvenile continental crust[J]. GEOSCIENCE FRONTIERS,2024,15(6):6. |
| APA | Gamaleldien, Hamed.,Wang, Kun.,Johnson, Tim E..,Ma, Jian-Feng.,Abu Anbar, Mohamed.,...&Kirkland, Christopher L..(2024).Potassium isotopes trace the formation of juvenile continental crust.GEOSCIENCE FRONTIERS,15(6),6. |
| MLA | Gamaleldien, Hamed,et al."Potassium isotopes trace the formation of juvenile continental crust".GEOSCIENCE FRONTIERS 15.6(2024):6. |
入库方式： OAI收割
来源：广州地球化学研究所
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