Dating and Petrochemistry of the Beijige Pluton in Siziwangqi, oft-com:office:smarttags" />Inner Mongoliaoft-com:office:office" />

• 责任者：Liu Changfeng (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Zhang Haoran
• 刊名：Geoscience
• 出版年：2010
• 卷期：24(1)
• 关键词：花岗岩 ; granite ; 铀—铅计时 ; U-Pb dating ; 内蒙古 ; Inner Mongolia
• 页码：p.112-119, 150
• 图表：7 illus., 2 tables, 33 refs.
• 分类号：0801
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

The Beijige pluton is located in the Siziwangqi area, oft-com:office:smarttags" />Inner Mongolia, tectonically belongs to the Xing-Meng orogenic belt, lying on the southern margin of the Erdaojing-Chaganwula-Honggeer suture zone. It is predominantly composed of syenogranite. LA-ICP-MS U-Pb zircon dating and petrochemical analysis have been carried out in order to understand the formation age and natures of the pluton. As a result, zircons from syenogranite give a LA-ICP-MS mean U-Pb age of (264.0 +3.4) Ma (MSWD= 1.5). Geochronological and petrochemical data imply that the Beijige pluton is related to a syn-collisional regime, maybe triggered by extensive underplating.oft-com:office:office" />