- 责任者：Peng Peng (Key Laboratory of Lithospheric Evolution ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Li Yun
- 刊名：Acta Petrologica Sinica
- 出版年：2012
- 卷期：28(11)
- 关键词：陆壳 ; continental crust ; 变火山岩 ; metavolcanic rocks ; 河北 ; Hebei Province
- 页码：p.3531-3544
- 图表：6 illus., 4 tables, 55 refs.
- 分类号：0802
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
///In this paper, zircon grains from a meta-basaltic-andesite sample （amphibole plagioclase gneiss）from the Hongqiyingzi Group in Huangtuyao-Wushijia area, Shangyi, was dated using LA-MC-ICPMS method. Element and isotope geochemistry show that the volcanics are akin of grey gneisses or dioritic intrusions in the grey gneisses in this area. Both geological relations and geochemistry show that these volcanic rocks may have similar origins with the grey gneisses and dioritic rocks. According to the geological relationships of the Late Archean units in this area, the volcano-sedimentary sequence （the Hongqiyingzi Group） and the grey gneiss complex （Sanggan and Chongli complexes） composed a 2-dimension Late Archean crust structure. Identifying the spatial continuity of such crustal structure, as well as the time and material evolution of the related units, can reveal the forming mechanism of Late Archean continental crust in the North China Craton.