What Drives the Continental Crust To Be Extremely Hot So Quickly?
文献类型：期刊论文
| 作者 | Huang, Guangyu2; Guo, Jinghui2; Jiao, Shujuan2; Palin, Richard1 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2019-11-29 |
| 页码 | 14 |
| 关键词 | ultrahigh temperature rapid metamorphism heat source garnet orthogneiss phase equilibria modeling rare earth elements |
| ISSN号 | 2169-9313 |
| DOI | 10.1029/2019JB017840 |
| 英文摘要 | The widespread spatio-temporal occurrence of ultrahigh-temperature (UHT) metamorphism in continental crust has been widely documented, but the heat source responsible for generating these extreme conditions over a short period of time remains enigmatic. Here, garnet orthogneiss, spinel-bearing granulite, and gabbronorite from the east Khondalite belt, China, have been analyzed via integrated geochemistry, U-Pb zircon isotope geochronology, and phase equilibria modeling to shed light on the timing and nature of rapid UHT metamorphism in this area. Peak metamorphism is characterized in garnet orthogneiss by the assemblage garnet + orthopyroxene + plagioclase + K-feldspar + quartz, which is calculated to represent pressure-temperature conditions of 0.83-0.88 GPa at 930-990 degrees C. Zircon ages from this sample yield an igneous (protolith) emplacement age of approximately 1.93-1.95 Ga, which matches the timing of metamorphism in adjacent (pre-UHT) metapelites. These garnet orthogneiss were then metamorphosed to UHT conditions at approximately 1.92 Ga, coincident with emplacement of mantle-derived gabbronorites, as supported by REE patterns in zircon, and evidence for a rapid thermal pulse in the east Khondalite belt lower crust at that time. Heat-source and heat-transfer calculations indicate that advected heat from mafic magmas is the most likely cause of this regional-scale event, although ductile shearing might have contributed to a lesser degree. |
| WOS关键词 | NORTH CHINA CRATON ; ULTRAHIGH-TEMPERATURE METAMORPHISM ; PRESSURE PELITIC GRANULITES ; S-TYPE GRANITES ; PB ZIRCON AGES ; LA-ICP-MS ; KHONDALITE BELT ; U-PB ; HELANSHAN COMPLEX ; OROGENIC BELTS |
| 资助项目 | National Natural Science Foundation of China[41890832] ; National Natural Science Foundation of China[41902057] ; China Postdoctoral Science Foundation[2019M650834] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000499318700001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95786]  |
| 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 | Huang, Guangyu |
| 作者单位 | 1.Colorado Sch Mines, Dept Geol & Geol Engn, Golden, CO 80401 USA 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Guangyu,Guo, Jinghui,Jiao, Shujuan,et al. What Drives the Continental Crust To Be Extremely Hot So Quickly?[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2019:14. |
| APA | Huang, Guangyu,Guo, Jinghui,Jiao, Shujuan,&Palin, Richard.(2019).What Drives the Continental Crust To Be Extremely Hot So Quickly?.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,14. |
| MLA | Huang, Guangyu,et al."What Drives the Continental Crust To Be Extremely Hot So Quickly?".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH (2019):14. |
入库方式： OAI收割
来源：地质与地球物理研究所
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