Thermal Evolution of the Lithosphere-Asthenosphere Boundary Beneath Arc and Its Geodynamic Implications: Depth Variation of Thermal Histories of Mantle Xenoliths From Ichinomegata, Northeast Japan
文献类型：期刊论文
| 作者 | Sato, Yuto; Ozawa, Kazuhito |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2023 |
| 卷号 | 128期号:10页码:e2023JB027208 |
| 关键词 | ORTHO-PYROXENE SPINEL PERIDOTITE OGA PENINSULA DIFFUSION OLIVINE MAGMA PETROLOGY SOLUBILITY CALCIUM GENESIS |
| ISSN号 | 2169-9313 |
| DOI | 10.1029/2023JB027208 |
| 英文摘要 | Quantitative reconstruction of thermal history recorded in mantle xenoliths is imperative for understanding the temporal change of thermal state and dynamics of the lithosphere-asthenosphere boundary (LAB). We challenged this problem in the arc settings by examining nine spinel peridotite xenoliths from Ichinomegata maar in the back-arc side of Northeast Japan Arc. Extensive mineral chemical analyses combined with the derivation depths of the xenoliths revealed a depth-dependent variation of chemical zoning patterns in olivine and pyroxenes. The depth variation of thermal histories of the Ichinomegata xenoliths was decoded by applying diffusion-controlled reaction modeling to reproduce the zoning patterns. The decoded thermal events in the order of occurrence are (a) similar to 14 million years of cooling causing lithosphere thickening up to similar to 55 km depth, (b) subsequent similar to 12 thousand years of heating from the underlying asthenosphere resulting in lithosphere thinning up to the depths of similar to 40 km, and (c) 1-68 days of heating during xenolith transportation by the host magma. The duration of the lithosphere thickening is consistently explained by the period of the Japan Sea opening. On the other hand, the timescale of the lithosphere thinning is too short to be explained by heat conduction through the similar to 15 km thick LAB and requires a more effective heat transportation mechanism such as direct magma injection into the LAB or significant viscosity reduction of the mantle peridotite aided by the pervasive permeable flow of silicate melt. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001081522300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80391]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 推荐引用方式 GB/T 7714 | Sato, Yuto,Ozawa, Kazuhito. Thermal Evolution of the Lithosphere-Asthenosphere Boundary Beneath Arc and Its Geodynamic Implications: Depth Variation of Thermal Histories of Mantle Xenoliths From Ichinomegata, Northeast Japan[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2023,128(10):e2023JB027208. |
| APA | Sato, Yuto,&Ozawa, Kazuhito.(2023).Thermal Evolution of the Lithosphere-Asthenosphere Boundary Beneath Arc and Its Geodynamic Implications: Depth Variation of Thermal Histories of Mantle Xenoliths From Ichinomegata, Northeast Japan.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,128(10),e2023JB027208. |
| MLA | Sato, Yuto,et al."Thermal Evolution of the Lithosphere-Asthenosphere Boundary Beneath Arc and Its Geodynamic Implications: Depth Variation of Thermal Histories of Mantle Xenoliths From Ichinomegata, Northeast Japan".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 128.10(2023):e2023JB027208. |
入库方式： OAI收割
来源：广州地球化学研究所
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