Deformation-enhanced HP-UHP metamorphic transformation of two-pyroxene granite in ductile shear zones at Yangkou, Sulu UHP metamorphic belt, China
文献类型：期刊论文
| 作者 | Fang, Aimin; Yan, Zhao Zhong |
| 刊名 | JOURNAL OF STRUCTURAL GEOLOGY
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 124页码:8-22 |
| 关键词 | UHP metamorphism UHP deformation Diffusion mass transfer Dislocation creep Deep continental subduction and exhumation Sulu UHP metamorphic belt |
| ISSN号 | 0191-8141 |
| DOI | 10.1016/j.jsg.2019.04.003 |
| 英文摘要 | We report that high strain deformation in ductile shear zones greatly enhanced high to ultrahigh pressure (HPUHP) metamorphic transformation of a two-pyroxene granite in deep continental subduction zone. Integrated structural and petrologic study of rocks from the two-pyroxene granite block and shear zones in the block in the UHP shear complex at Yangkou, Sulu UHP metamorphic belt, reveals that the undeformed granite has preserved granitic texture and primary mineral assemblage of hypersthene, augite, plagioclase, K-feldspar, quartz and biotite. Metamorphic transformation of the granite is limited to grain boundaries due to low fluid activity and low reaction kinetics. In contrast rocks from the shear zones have a mylonitic texture and most of the primary minerals are transformed to HP-UHP phase minerals. Dislocation creep accommodated by dynamic re-crystallization results in significant grain size reduction of the primary minerals in the mylonite, which increases reaction surface area and enhances metamorphic transformation. Fluid released by biotite transformation to HPUHP minerals leads to diffusion mass transfer that greatly accelerates the metamorphic process in the shear zone. Deformation conditions are estimated ca 546 degrees C and pressure 2.5 GPa. |
| WOS关键词 | WESTERN GNEISS REGION ; LATTICE PREFERRED ORIENTATIONS ; HIGH-PRESSURE ; CONTINENTAL-CRUST ; COESITE ECLOGITE ; INTERGRANULAR COESITE ; PLASTIC-DEFORMATION ; MINERAL INCLUSIONS ; JIANGSU PROVINCE ; EASTERN CHINA |
| 资助项目 | National Sciences Foundation of China[NSFC 40672139] ; National Sciences Foundation of China[2009CB825008] ; Royal Society |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000471732600002 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Sciences Foundation of China ; National Sciences Foundation of China ; National Sciences Foundation of China ; National Sciences Foundation of China ; Royal Society ; Royal Society ; Royal Society ; Royal Society ; National Sciences Foundation of China ; National Sciences Foundation of China ; National Sciences Foundation of China ; National Sciences Foundation of China ; Royal Society ; Royal Society ; Royal Society ; Royal Society ; National Sciences Foundation of China ; National Sciences Foundation of China ; National Sciences Foundation of China ; National Sciences Foundation of China ; Royal Society ; Royal Society ; Royal Society ; Royal Society ; National Sciences Foundation of China ; National Sciences Foundation of China ; National Sciences Foundation of China ; National Sciences Foundation of China ; Royal Society ; Royal Society ; Royal Society ; Royal Society |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/92514]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yan, Zhao Zhong |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, Aimin,Yan, Zhao Zhong. Deformation-enhanced HP-UHP metamorphic transformation of two-pyroxene granite in ductile shear zones at Yangkou, Sulu UHP metamorphic belt, China[J]. JOURNAL OF STRUCTURAL GEOLOGY,2019,124:8-22. |
| APA | Fang, Aimin,&Yan, Zhao Zhong.(2019).Deformation-enhanced HP-UHP metamorphic transformation of two-pyroxene granite in ductile shear zones at Yangkou, Sulu UHP metamorphic belt, China.JOURNAL OF STRUCTURAL GEOLOGY,124,8-22. |
| MLA | Fang, Aimin,et al."Deformation-enhanced HP-UHP metamorphic transformation of two-pyroxene granite in ductile shear zones at Yangkou, Sulu UHP metamorphic belt, China".JOURNAL OF STRUCTURAL GEOLOGY 124(2019):8-22. |
入库方式： OAI收割
来源：地质与地球物理研究所
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