U-Pb Geochronology and Hf Isotope Geochemistry of the Zircon from Huping Complex in Tongshan Area of Zhongtiaoshan Mountains and Its Geologic Implications
详细信息
- 责任者：Zhang Han (College of Earth Science ; Jilin University ; Changchun 130061 ; China) ; Sun Fengyue
- 刊名：Journal of Jilin University
- 出版年：2012
- 卷期：42(3)
- 关键词：杂岩 ; complexes ; 铀—铅计时 ; U-Pb dating ; 铪同位素 ; hafnium isotopes ; 中条山 ; Zhongtiao Mountains
- 页码：p.733-746
- 图表：6 illus., 2 tables, 4 refs.
- 分类号：0802
- issnNo：ISSN1671-5888
- isbnNo：CN22-1343/P
摘要
The Zhongtiaoshan area in which Precambrian rocks widely occurred is an important part of the Trans-North China Orogen(TNCO).The Neoarchean TTG is mainly distributed in the Main Range of Zhongtiaoshan Mountains extending in NE direction and the Tongshan "window" of Wangwushan Mountains in EW direction.It can be concluded that the mantle of the TNCO was largely depleted before 2.55 Ga.The εHf(t) values of the tonalitic gneiss in Huping complex suggest that the age of the ocean ridge subduction or inter-ocean subduction of young ocean crust is 2.55 Ga,and the subduction played an important role in formation of the tonalitic gneiss in the Huping complex.