• 责任者：Li Yaping (Development Research Center of China Geological Survey ; Beijing 100037 ; China) ; Li Jinyi
• 刊名：Geological Bulletin of China
• 出版年：2009
• 卷期：28(12)
• 关键词：白云母花岗岩 ; muscovite granite ; 准噶尔盆地 ; Junggar Basin
• 页码：p.1885-1893
• 图表：4 illus., 1 table, 98 refs.
• 分类号：0801
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

Based on zircon apparent ²⁰⁶Pb/²³⁸U age of (413±8) Ma (MSWD=0.73) obtained by SHRIMP U-Pb dating and CL image observation of the zircons, intrusive age of the muscovite granite (alaskite) unconformablly covered by the Devonian sedimentary sequences in the central East Junggar orogenic belt is determined as the earliest Devonian. Combining the petrological characteristics of the granite with available regional geological data, the earliest Devonian tectonic setting of the East Junggar area is supposed as being extensional.