Complex composition and multi-stage juvenile accretion and reworking of the lower crust beneath Junan, East China's Shandong Province: granulite xenoliths revisited
文献类型：期刊论文
| 作者 | Ying JiFeng1,2; Tang YanJie1,2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 38期号:12页码:3735-3746 |
| 关键词 | Granulite xenolith U-Pb age Hf isotope Junan North China Craton |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2022.12.12 |
| 英文摘要 | The abundant deep-seated xenoliths of peridotite, granulite, and pyroxenite entrapped in Junan basaltic breccia, Shandong province have been the key to increased understanding of the lower crust and upper mantle in eastern North China craton. We report high-precision Ar-40-Ar-39 dating data of the host basalt and new measurements of U-Pb and Hf isotopes of zircon from the granulite xenoliths. The Ar-40-Ar-39 dating of phlogopite megacryst yields an age of 59. 04 +/- 0. 17Ma, which is about 8Myr younger than the age determined by K-Ar method on basalt matrix. SIMS U-Pb analysis of zircon from the granulite xenoliths reveals that the protolith of these granulites recorded multiphase magmatism, aged at around 3. 33Ga, 2. 52Ga, 1. 98Ga and 0. 76Ga. The in-situ Hf isotope determination of the dated zircon suggests that the lower crust underneath Junan experienced multi-stage crustal accretion and reworking. Hf model age indicate that the lower crust was substantially accreted during 3. 7 similar to. 8Ga with subordinate crustal growth in Neoproterozoic. Intra-crustal recycling of the Neoarchaean juvenile crust, demonstrated by the multiphase magmatism leads to the formation of the protolith of the lower crust beneath Junan. |
| WOS关键词 | CRATON ; MANTLE ; GEOCHRONOLOGY ; GEOCHEMISTRY ; CONSTRAINTS ; MEGACRYSTS ; EVOLUTION ; BASEMENT ; ZIRCONS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000905312500012 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106906]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Ying JiFeng |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithosph Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ying JiFeng,Tang YanJie. Complex composition and multi-stage juvenile accretion and reworking of the lower crust beneath Junan, East China's Shandong Province: granulite xenoliths revisited[J]. ACTA PETROLOGICA SINICA,2022,38(12):3735-3746. |
| APA | Ying JiFeng,&Tang YanJie.(2022).Complex composition and multi-stage juvenile accretion and reworking of the lower crust beneath Junan, East China's Shandong Province: granulite xenoliths revisited.ACTA PETROLOGICA SINICA,38(12),3735-3746. |
| MLA | Ying JiFeng,et al."Complex composition and multi-stage juvenile accretion and reworking of the lower crust beneath Junan, East China's Shandong Province: granulite xenoliths revisited".ACTA PETROLOGICA SINICA 38.12(2022):3735-3746. |
入库方式： OAI收割
来源：地质与地球物理研究所
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