Exhumation of an Archean Granulite Terrane by Paleoproterozoic Orogenesis: Evidence from the North China Craton
文献类型：期刊论文
| 作者 | Wang, Dan1; Mitchell, Ross N.2,3; Guo, Jinghui2,3; Liu, Fulai1 |
| 刊名 | JOURNAL OF PETROLOGY
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 64期号:6页码:27 |
| ISSN号 | 0022-3530 |
| 关键词 | polymetamorphism North China Craton granulite terrane garnet corona Archean |
| DOI | 10.1093/petrology/egad035 |
| 英文摘要 | Granulites represent high-grade metamorphic rocks of the deep continental crust. The metamorphism and exhumation of granulites from Archean terranes provide insights into the crustal evolution of Archean cratons and shed light on the formation and reactivation of cratons. We present petrology, U-Pb geochronology (zircon, rutile, and titanite), and pressure-temperature (P-T) paths for metadiabase dikes in an Archean granulite terrane of the North China Craton. Garnet (Grt) coronae in the metadiabase dikes are developed between plagioclase (Pl) and clinopyroxene (Cpx) via the reaction Pl(igneous) + Cpx -> Pl(1) + Grt +/- quartz. The reaction proceeds inward within the plagioclase, progressively consuming Pl(igneous) (X-An = 0.65-0.69) and leaving Ca-poor Pl(1) (X-An = 0.46-0.53) as the residue. Geothermobarometry and P-T pseudosections suggest peak conditions for garnet formation at similar to 800 degrees C and 10-13 kbar. During retrograde metamorphism, Grt broke down to Ca-rich Pl(2) (X-An = 0.73-0.74), and ilmenite replaced rutile. Geothermobarometry and Zr-in-titanite temperatures constrain the P-T conditions of retrograde metamorphism at 700-750 degrees C and 4.5-7.5 kbar. Zircon and titanite U-Pb geochronology shows that the protolith of the metadiabase dike was formed at 2.4 Ga and underwent granulite-facies metamorphism at 1.86 Ga. The intrusion of mafic dikes into the Archean granulite terrane indicates that the Archean basement was also heated and buried in the Paleoproterozoic. The metadiabase dikes and the hosting Archean basement underwent Paleoproterozoic granulite-facies metamorphism at a depth of similar to 40 km, followed by near-isothermal decompression and subsequent near-isobaric cooling (cooling rate of 1-3 degrees C Myr(-1)) at depths of 15-25 km. Crustal shortening and thickening may have been caused by the underplating of the Khondalite series beneath the Archean basement during the amalgamation of supercontinent Columbia. The Paleoproterozoic orogeny induced a second generation of metamorphism of the Archean basement along the margin of the craton and drove the exhumation of the Archean granulite terranes to the middle crust (similar to 15 km). |
| WOS关键词 | HIGH-GRADE METAMORPHISM ; MINERAL EQUILIBRIA CALCULATIONS ; MAFIC GARNET GRANULITE ; U-PB SYSTEMATICS ; T-T DEVELOPMENT ; TRACE-ELEMENT ; HIGH-PRESSURE ; FACIES METAMORPHISM ; PHASE-EQUILIBRIA ; LIMPOPO BELT |
| 资助项目 | National Natural Science Foundation of China[42072221] ; National Natural Science Foundation of China[41890832] ; National Natural Science Foundation of China[41702201] ; Research Foundation of the Institute of Geology, Chinese Academy of Geological Sciences[J2001] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:001002735100004 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Foundation of the Institute of Geology, Chinese Academy of Geological Sciences ; Research Foundation of the Institute of Geology, Chinese Academy of Geological Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Foundation of the Institute of Geology, Chinese Academy of Geological Sciences ; Research Foundation of the Institute of Geology, Chinese Academy of Geological Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Foundation of the Institute of Geology, Chinese Academy of Geological Sciences ; Research Foundation of the Institute of Geology, Chinese Academy of Geological Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Research Foundation of the Institute of Geology, Chinese Academy of Geological Sciences ; Research Foundation of the Institute of Geology, Chinese Academy of Geological Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111187]  |
| 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 | Wang, Dan |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Dan,Mitchell, Ross N.,Guo, Jinghui,et al. Exhumation of an Archean Granulite Terrane by Paleoproterozoic Orogenesis: Evidence from the North China Craton[J]. JOURNAL OF PETROLOGY,2023,64(6):27. |
| APA | Wang, Dan,Mitchell, Ross N.,Guo, Jinghui,&Liu, Fulai.(2023).Exhumation of an Archean Granulite Terrane by Paleoproterozoic Orogenesis: Evidence from the North China Craton.JOURNAL OF PETROLOGY,64(6),27. |
| MLA | Wang, Dan,et al."Exhumation of an Archean Granulite Terrane by Paleoproterozoic Orogenesis: Evidence from the North China Craton".JOURNAL OF PETROLOGY 64.6(2023):27. |
入库方式： OAI收割
来源：地质与地球物理研究所
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