SPATIAL DENSITY DISTRIBUTION OF MESOZOIC INTRUSIVE ROCKS AND A BRANCH OF MENTLE INTRUSIVE ROCK DENSITY AND A BRANCH OF MANTLE PLUME IN NORTHERN HEBEI PROVINCE
GUO You-zhao1,2, LI Lie2, ZHANG Ya-dong3, DONG Jie3
1. Institute of Geophysical and Geochemical Exploration, CAGS, Langfang 065000 China;
2. China University of Geoscience, Beijing 100083, China;
3. Hebei Institute of Geophysical Exploration, Langfang 065000 China
The statistic results of the density distribution of Mesozoic intrusive rocks reveal that the density of basic igneous rocks is higher than that of acidic igneous rocks. The spatial density distribution of extrusive rocks and that of intrusive rocks show regularity, i.e., relatively high density or low density areas are concentrated in specific sites. Therefore, to explain the regional tectonics of northern Hebei Province, this paper suggests the existence of a branch of mantle plume, in which high density basic igneous rocks are located at the center and low density acidic igneous rocks are situated on the edge. The structure of the branch plume might have controlled the regional ore-forming process.
郭友钊, 李磊, 张亚东, 董杰. 冀北地区中生代岩浆岩密度分布特征及其幔枝构造的研究[J]. 物探与化探, 2001, 25(5): 379-382.
GUO You-zhao, LI Lie, ZHANG Ya-dong, DONG Jie . SPATIAL DENSITY DISTRIBUTION OF MESOZOIC INTRUSIVE ROCKS AND A BRANCH OF MENTLE INTRUSIVE ROCK DENSITY AND A BRANCH OF MANTLE PLUME IN NORTHERN HEBEI PROVINCE. Geophysical and Geochemical Exploration, 2001, 25(5): 379-382.
