• 责任者：Li Chengdong (Institute of Geology and Mineral Resources ; Tianjin 300170 ; China) ; Zhang Fuqin
• 刊名：Acta Geologica Sinica
• 出版年：2009
• 卷期：83(5)
• 关键词：新太古代 ; Neoarchean Era ; 古元古代 ; Paleoproterozoic Era ; 铀—铅计时 ; U-Pb dating ; 华北板块 ; North China Plate
• 页码：p.642-650
• 图表：4 illus., 1 table, 39 refs.
• 分类号：1300
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

Based on the filed survey and SHRIMP dating, three samples from Complex of the Zhangsangou Formation have yielded protolith age of (2 517±9), (2 518±7), (2 534±26) Ma and metamorphic age of (2 439±24),(2 464±73), and (2 433±71) Ma, respectively, indicating that it formed by metamorphinism at Late Neoarchean and reworked at Late Neoarchean-Early Paleoproterozoic. In combination with regional geological data, its metamorphic time is likely related to a collisional tectonism between ancient Longgang continental block and other continental blocks, which indicates that the North China Block developed a cratonization in Late Neoarchean-Early Paleoproterozoic.