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| 山东鲁山地区新太古代壳源花岗岩锆石SHRIMP U-Pb定年 | |
| 引用本文： | 王 伟,王世进,董春艳,杨恩秀,杜利林,颉颃强,马铭株,万渝生.山东鲁山地区新太古代壳源花岗岩锆石SHRIMP U-Pb定年[J].地质通报,2010,29(7):993-1000. |
| 作者姓名： | 王 伟 王世进 董春艳 杨恩秀 杜利林 颉颃强 马铭株 万渝生 |
| 作者单位： | 1. 中国地质科学院地质研究所,北京,100037;北京离子探针中心,北京,100037 2. 山东省地质调查研究院,山东,济南,250013 3. 中国地质科学院地质研究所,北京,100037 |
| 基金项目： | 国家自然科学基金，中国地质调查局重点项目 |
| 摘 要： | 山东鲁山地区新太古代壳源花岗岩主要包括粗粒钾长花岗岩、中—粗粒二长花岗岩和斑状二长花岗岩。根据SHRIMP锆石U-Pb定年,其形成时代分别为2525Ma±13Ma、2517Ma±13Ma和2508Ma±20Ma,且常有残余锆石核存在。它们的形成与华北克拉通新太古代晚期(2.5~2.55Ga)强烈的构造热事件有关,标志着鲁西和华北古陆块克拉通化完成。 |
| 关 键 词： | 山东 壳源花岗岩 新太古代 SHRIMP锆石U-Pb定年 |
SHRIMP U-Pb dating of zircons from Neoarchean crustal derived granites in the Lushan area, Shandong, China |
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| WANG Wei,WANG Shi-jin,DONG Chun-yan,YANG En-xiu,DU Li-lin,XIE Hang-qiang,MA Ming-zhu,WAN Yu-sheng.SHRIMP U-Pb dating of zircons from Neoarchean crustal derived granites in the Lushan area, Shandong, China[J].Geologcal Bulletin OF China,2010,29(7):993-1000. | |
| Authors: | WANG Wei WANG Shi-jin DONG Chun-yan YANG En-xiu DU Li-lin XIE Hang-qiang MA Ming-zhu WAN Yu-sheng |
| Institution: | 1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;2. Beijing SHRIMP Laboratory, Beijing 100037, China; 3. Shandong Institute of Geological Survey, Jinan 250013, Shandong, China |
| Abstract: | The Lushan is one of the most famous mountain in Shandong Province, which is located in Zibo City. The crustal derived granites, with many amphibolite and diorite xenoliths, exposed in the Lushan area, were composed of coarse grained alkali-feldspar granite, fine-medium grained monzongranite and phyric monzongranite. The study of zircon SHRIMP U-Pb chronology indicated that the formation ages of the granites in the Lushan area were 2525±13Ma, 2517±13Ma and 2508±20Ma respectively. And zircons from these plutons normally have inherited cores. The granites in the Lushan area were likely to originate from crustal melting. Their formation is closely related to the strong tectonic thermal event between 2.50Ga and 2.55Ga in North China Craton, thus can be regarded as the evidence of cratonization of western Shangdong and North China during Late Neorchean. |
| Keywords: | Shandong Province crustal derived granite Neorchean SHRIMP zircon U-Pb dating |
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