Origin of the Low delta O-18 Signals in Zircons from the Early Cretaceous A-Type Granites in Eastern China: Evidence from the Kulongshan Pluton
文献类型：期刊论文
| 作者 | Fan, Wenbo3; Jiang, Neng1,2; Zhai, Mingguo1,2,3; Hu, Jun1,2 |
| 刊名 | JOURNAL OF EARTH SCIENCE
 |
| 出版日期 | 2021-09-06 |
| 页码 | 13 |
| 关键词 | A-type granite low-delta O-18 zircon radiation damage magma derivation |
| ISSN号 | 1674-487X |
| DOI | 10.1007/s12583-021-1515-y |
| 英文摘要 | The origin of low delta O-18 signals in zircons from the Early Cretaceous A-type granites in eastern China has long been disputed. It is uncertain whether the O-18-depleted features were inherited from high-temperature hydrothermal altered source rock or resulted from water-rock interaction after emplacement. In this paper, zircon oxygen isotopes in the similar to 130 Ma Kulongshan A-type granites in the northern North China Craton are analyzed. The zircons could be subdivided into 5 types based on their luminescent intensity and internal structures in CL images. Their delta O-18 values also vary in different types and show negative correlation with U and Th contents and accompanying cumulative alpha-decay doses, implying that their delta O-18 values may have been modified to various degrees by meteoric water-rock interaction after the accumulation of radiation damage. The idea is further confirmed by oxygen isotopic equilibrium calculation between co-existing mineral pairs. It is inferred that only the least-influenced zircons, with slightly elevated delta O-18 values than normal mantle, have preserved the magmatic oxygen isotopes. In combination with other evidences, it is proposed that the A-type granites are lower-crustal-derived, unnecessarily invoking a high-temperature hydrothermal altered source. The proposition is applicable to many other Cretaceous A-type granites that have similar zircon behaviors. |
| WOS关键词 | OXYGEN ISOTOPIC COMPOSITION ; RADIATION-DAMAGE ; NATURAL ZIRCON ; EVOLUTION ; CRATON ; CRUST ; AGE ; MINERALIZATION ; GEOCHRONOLOGY ; PETROGENESIS |
| 资助项目 | National Natural Science Foundation of China[41973034] ; Postdoctoral Initiation Fund of Northwestern University[208521] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000693494800001 |
| 出版者 | CHINA UNIV GEOSCIENCES, WUHAN |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Postdoctoral Initiation Fund of Northwestern University ; Postdoctoral Initiation Fund of Northwestern University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Postdoctoral Initiation Fund of Northwestern University ; Postdoctoral Initiation Fund of Northwestern University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Postdoctoral Initiation Fund of Northwestern University ; Postdoctoral Initiation Fund of Northwestern University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Postdoctoral Initiation Fund of Northwestern University ; Postdoctoral Initiation Fund of Northwestern University |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102648]  |
| 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 | Fan, Wenbo |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Northwestern Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Wenbo,Jiang, Neng,Zhai, Mingguo,et al. Origin of the Low delta O-18 Signals in Zircons from the Early Cretaceous A-Type Granites in Eastern China: Evidence from the Kulongshan Pluton[J]. JOURNAL OF EARTH SCIENCE,2021:13. |
| APA | Fan, Wenbo,Jiang, Neng,Zhai, Mingguo,&Hu, Jun.(2021).Origin of the Low delta O-18 Signals in Zircons from the Early Cretaceous A-Type Granites in Eastern China: Evidence from the Kulongshan Pluton.JOURNAL OF EARTH SCIENCE,13. |
| MLA | Fan, Wenbo,et al."Origin of the Low delta O-18 Signals in Zircons from the Early Cretaceous A-Type Granites in Eastern China: Evidence from the Kulongshan Pluton".JOURNAL OF EARTH SCIENCE (2021):13. |
入库方式： OAI收割
来源：地质与地球物理研究所
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