U-Pb Age Spectrum of Detrital Zircons from the Fuzikuang Formation, Penglai Group in Changdao , Shandong
详细信息
- 责任者：Chu Hang (Tianjin Institute of Geology and Mineral Resources ; Tianjin 300170 ; China) ; Lu Songnian
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(4)
- 关键词：新元古代 ; Neoproterozoic Era ; 变沉积岩 ; metasedimentary rocks ; 铀—铅计时 ; U-Pb dating ; 山东 ; Shandong Province
- 页码：p.1017-1028
- 图表：6 illus., 1 table, 32 refs.
- 分类号：1300
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The low-grade metasedimentary rocks of the Fuzikuang Formation, Penglai Group in Changdao, Yantai, Shandong Province are mainly composed of metamorphic quartz sandstones, with metamorphic siltstone and mud rock intercalations. The depositional age of the Penglai Group has long been debated. Based on the U-Pb age spectrum of detrital zircons, the authors conjecture that the age of the Fuzikuang Formation, Penglai Group in Changdao is Neoproterozoic. There are two age peaks, ~1 600 Ma and 1 200~1 100 Ma, in the age spectrum of the detrital zircons. The younger age peak shows that the Fuzikuang Formation was sourced from a provenance with typical Greenville-period tectono-thermal events, which is different both from the North China and Yangtze blocks in geological evolution characteristics.