Evolution of syn- to post-collisional magmatism from north Sulu UHP belt, eastern China: zircon U-Pb geochronology
文献类型：期刊论文
| 作者 | Guo, JH; Chen, FK; Zhang, XM; Siebel, W; Zhai, MG |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2005-07-01 |
| 卷号 | 21期号:4页码:1281-1301 |
| 关键词 | Granite Alkaline Rocks Post-collision Sulu Uhp Belt Jiaodong |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Numerous Mesozoic plutons are exposed within the ultrahigh-pressure (UHP) metamorphic terranes in the Weihai area of the northern SuLu UHP belt. They occur as multi-pulse intrusive complexes or small size stocks of diversity rock types including shoshonitic gabbros and syenites, S-type granites, and I-type granites of high K alkaline series. A temporal evolution has be established on the basis of precise zircon U-Pb ages by single grain isotope dilution method and SHRIMP technique and petrochemical investigations. (1) Shoshonitic magmatism commenced 20Ma after UHP metamorphism in the late Triassic. Typical plutons of shoshonitic series represented by Xingjia alkali gabbros (211 +/- 5Ma and 213 +/- 5Ma), Jiazishan pyroxene syenite (211.9 +/- 1.5Ma and 209.0 +/- 6.5Ma) and Chashan syenogranite (205.7 +/- 1.4Ma). They derived from enriched mantle contaminated by subducted continental crust, and were likely the response to mantle upwelling induced by slab breakoff after continental subduction. (2) Jurassic calc-alkaline intrusions postdated the UHP metamorphism by 60 similar to 80Ma. The Duogushan granodiorite (161 +/- 1Ma), the Wendeng monzogranite (160 +/- 3Ma) and the Kunyushan monzogranite and garnet-bearing leucogranite (142 +/- 3Ma) are representative plutons. These granites contain most inherited zircons of 700 similar to 800Ma suggesting that they were melting products of the South China Block. They were likely to be originated from crustal melting induced by lower crustal delamination after the Triassic UHP collision. (3) The final magma pulse appeared in early Cretaceous at similar to 110Ma, represented by the Liudusi pyroxene diorite (114.5 +/- 0.8Ma), Taiboding Kf-porphyritic granite (114 +/- 1Ma), Sanfoshan Kf-porphyritic granite (113 +/- 1Ma) and Weideshan granite (108 +/- 2Ma) and numerous small intrusions. They show characteristics of the high-K calc-alkaline and shoshonitic series. These granites are ascribed to strongly crust-mantle interaction during Cretaceous mantle upwelling and lithospheric thinning commonly observed in eastern China. |
| WOS关键词 | PRESSURE METAMORPHIC ROCKS ; COESITE-BEARING ECLOGITES ; COOLING HISTORY ; DABIE MOUNTAINS ; OROGENIC BELT ; SOUTH CHINA ; LU REGION ; SM-ND ; DELAMINATION ; AGES |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000232291300025 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65426]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Guo, JH |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Tubingen, Inst Geochem, D-72074 Tubingen, Germany |
| 推荐引用方式 GB/T 7714 | Guo, JH,Chen, FK,Zhang, XM,et al. Evolution of syn- to post-collisional magmatism from north Sulu UHP belt, eastern China: zircon U-Pb geochronology[J]. ACTA PETROLOGICA SINICA,2005,21(4):1281-1301. |
| APA | Guo, JH,Chen, FK,Zhang, XM,Siebel, W,&Zhai, MG.(2005).Evolution of syn- to post-collisional magmatism from north Sulu UHP belt, eastern China: zircon U-Pb geochronology.ACTA PETROLOGICA SINICA,21(4),1281-1301. |
| MLA | Guo, JH,et al."Evolution of syn- to post-collisional magmatism from north Sulu UHP belt, eastern China: zircon U-Pb geochronology".ACTA PETROLOGICA SINICA 21.4(2005):1281-1301. |
入库方式： OAI收割
来源：地质与地球物理研究所
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