SHRIMP zircon U-Pb dating of a small tonalite intrusion in metamorphic belt of Chinese Altai orogen

• 作 者: WANG Wei WEI Chunjing ZHANG Yi
• 机 构: InstituteofGeomechanics,KeyLaboratoryofOrogenicBeltsandCrustalEvolution,InstituteofGeologyandMineral
• 出 处: 世界地质：英文版
• 发表日期: 2013年4期
• 关键词: 阿尔泰造山带 锆石U-PB SHRIMP 石英闪长岩 递增变质带 地质意义 中国 侵入 tonalite SHRIMP zircon U-Pb dati

Small granitic intrusions occur in the progressive metamorphic belts of the Chinese Altai orogen.SHRIMP U-Pb analyses were performed on zircons separated from a tonalite intrusion and yielded a concordant age of 409.6±3.7 Ma(MSWD=0.93),restricting th