- 责任者：Xiang Peng (Key Laboratory of Mineral Resources ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Cui Minli
- 刊名：Acta Petrologica Sinica
- 出版年：2012
- 卷期：28(11)
- 关键词：铁矿 ; iron ores ; 河北 ; Hebei Province
- 页码：p.3655-3669
- 图表：7 illus., 4 tables, 50 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
Zhoutaizi iron deposit lies on the northern margin of the North China Craton, which is located in Luanping, Hebei Province. It is indicated that the granitic gneiss is geochemically similar to adakite. Zircon U-Pb analysis has shown several different ages, which are (2 512±21) Ma, (2 452±9.6) Ma, (2 394±55) Ma, respectively. First of all, the ages around 2512Ma represent the volcanic eruption event and the sedimentary age of BIF deposit. Secondly, the ages around 2 452 Ma represent the crystallization age of TTG granitic gneiss. At last the ages around 2 394 Ma represent a metamorphic event which resulted in the modification of original rocks and ore rocks. The Hf isotope data indicates that the magma source of amphibolite and TTG granitic gneiss may be contaminated by ancient crustal material. And therefore the tectonic setting of Zhoutaizi iron deposit was extensional related to rifts.